./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops/while_infinite_loop_1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8bd4bc60 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loops/while_infinite_loop_1.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 c28500fb39e284eb130c0904f2ebec477741685a ..................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-8bd4bc6 [2020-07-28 18:12:47,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-28 18:12:47,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-28 18:12:47,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-28 18:12:47,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-28 18:12:47,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-28 18:12:47,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-28 18:12:47,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-28 18:12:47,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-28 18:12:47,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-28 18:12:47,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-28 18:12:47,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-28 18:12:47,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-28 18:12:47,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-28 18:12:47,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-28 18:12:47,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-28 18:12:47,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-28 18:12:47,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-28 18:12:47,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-28 18:12:47,713 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-28 18:12:47,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-28 18:12:47,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-28 18:12:47,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-28 18:12:47,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-28 18:12:47,722 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-28 18:12:47,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-28 18:12:47,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-28 18:12:47,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-28 18:12:47,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-28 18:12:47,726 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-28 18:12:47,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-28 18:12:47,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-28 18:12:47,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-28 18:12:47,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-28 18:12:47,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-28 18:12:47,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-28 18:12:47,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-28 18:12:47,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-28 18:12:47,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-28 18:12:47,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-28 18:12:47,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-28 18:12:47,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-28 18:12:47,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-28 18:12:47,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-28 18:12:47,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-28 18:12:47,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-28 18:12:47,754 INFO L138 SettingsManager]: * Use SBE=true [2020-07-28 18:12:47,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-28 18:12:47,755 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-28 18:12:47,755 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-28 18:12:47,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-28 18:12:47,756 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-28 18:12:47,756 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-28 18:12:47,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-28 18:12:47,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-28 18:12:47,757 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-28 18:12:47,757 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-28 18:12:47,757 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-28 18:12:47,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-28 18:12:47,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-28 18:12:47,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-28 18:12:47,759 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-28 18:12:47,759 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-28 18:12:47,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:47,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-28 18:12:47,760 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-28 18:12:47,760 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-28 18:12:47,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-28 18:12:47,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-28 18:12:47,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-28 18:12:47,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-28 18:12:47,762 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 -> c28500fb39e284eb130c0904f2ebec477741685a [2020-07-28 18:12:48,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-28 18:12:48,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-28 18:12:48,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-28 18:12:48,098 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-28 18:12:48,099 INFO L275 PluginConnector]: CDTParser initialized [2020-07-28 18:12:48,100 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-07-28 18:12:48,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c6adb53/b1c3915b3c9a4c46b4da76ec0ff96f24/FLAGf44dbe75c [2020-07-28 18:12:48,616 INFO L306 CDTParser]: Found 1 translation units. [2020-07-28 18:12:48,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/while_infinite_loop_1.c [2020-07-28 18:12:48,624 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c6adb53/b1c3915b3c9a4c46b4da76ec0ff96f24/FLAGf44dbe75c [2020-07-28 18:12:49,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19c6adb53/b1c3915b3c9a4c46b4da76ec0ff96f24 [2020-07-28 18:12:49,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-28 18:12:49,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-07-28 18:12:49,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:49,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-28 18:12:49,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-28 18:12:49,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@466ce97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49, skipping insertion in model container [2020-07-28 18:12:49,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-28 18:12:49,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-28 18:12:49,223 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:49,228 INFO L203 MainTranslator]: Completed pre-run [2020-07-28 18:12:49,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-28 18:12:49,255 INFO L208 MainTranslator]: Completed translation [2020-07-28 18:12:49,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49 WrapperNode [2020-07-28 18:12:49,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-28 18:12:49,258 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:49,258 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-07-28 18:12:49,258 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-07-28 18:12:49,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,274 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-07-28 18:12:49,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-28 18:12:49,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-28 18:12:49,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-28 18:12:49,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... [2020-07-28 18:12:49,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-28 18:12:49,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-28 18:12:49,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-28 18:12:49,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-28 18:12:49,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-28 18:12:49,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-28 18:12:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-28 18:12:49,599 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-28 18:12:49,599 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-28 18:12:49,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:49 BoogieIcfgContainer [2020-07-28 18:12:49,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-28 18:12:49,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-28 18:12:49,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-28 18:12:49,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-28 18:12:49,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.07 06:12:49" (1/3) ... [2020-07-28 18:12:49,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caa6b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:49, skipping insertion in model container [2020-07-28 18:12:49,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.07 06:12:49" (2/3) ... [2020-07-28 18:12:49,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caa6b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.07 06:12:49, skipping insertion in model container [2020-07-28 18:12:49,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:49" (3/3) ... [2020-07-28 18:12:49,612 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_1.c [2020-07-28 18:12:49,622 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-28 18:12:49,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-28 18:12:49,640 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-28 18:12:49,661 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-28 18:12:49,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-28 18:12:49,661 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-28 18:12:49,662 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-28 18:12:49,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-28 18:12:49,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-28 18:12:49,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-28 18:12:49,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-28 18:12:49,675 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-07-28 18:12:49,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-07-28 18:12:49,681 INFO L414 BasicCegarLoop]: Found error trace [2020-07-28 18:12:49,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-07-28 18:12:49,683 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-28 18:12:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-28 18:12:49,688 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2020-07-28 18:12:49,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-28 18:12:49,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124476696] [2020-07-28 18:12:49,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-28 18:12:49,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-28 18:12:49,929 INFO L280 TraceCheckUtils]: 0: Hoare triple {15#true} havoc main_#res;havoc main_~x~0;main_~x~0 := 0; {17#(= 0 ULTIMATE.start_main_~x~0)} is VALID [2020-07-28 18:12:49,932 INFO L280 TraceCheckUtils]: 1: Hoare triple {17#(= 0 ULTIMATE.start_main_~x~0)} assume !false;__VERIFIER_assert_#in~cond := (if 0 == main_~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; {18#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} is VALID [2020-07-28 18:12:49,933 INFO L280 TraceCheckUtils]: 2: Hoare triple {18#(not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))} assume 0 == __VERIFIER_assert_~cond; {16#false} is VALID [2020-07-28 18:12:49,934 INFO L280 TraceCheckUtils]: 3: Hoare triple {16#false} assume !false; {16#false} is VALID [2020-07-28 18:12:49,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-28 18:12:49,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124476696] [2020-07-28 18:12:49,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-28 18:12:49,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-28 18:12:49,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071336649] [2020-07-28 18:12:49,946 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 18:12:49,948 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-28 18:12:49,952 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-28 18:12:49,966 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 4 edges. 4 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:49,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-28 18:12:49,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-28 18:12:49,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-28 18:12:49,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-28 18:12:49,990 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-07-28 18:12:50,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:50,078 INFO L93 Difference]: Finished difference Result 15 states and 23 transitions. [2020-07-28 18:12:50,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-28 18:12:50,079 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-07-28 18:12:50,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-28 18:12:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 18:12:50,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-28 18:12:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2020-07-28 18:12:50,089 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 23 transitions. [2020-07-28 18:12:50,141 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-28 18:12:50,148 INFO L225 Difference]: With dead ends: 15 [2020-07-28 18:12:50,149 INFO L226 Difference]: Without dead ends: 0 [2020-07-28 18:12:50,152 INFO L675 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 [2020-07-28 18:12:50,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-28 18:12:50,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-28 18:12:50,172 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-28 18:12:50,173 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:50,174 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:50,174 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:50,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:50,175 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:12:50,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:50,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:50,176 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:50,177 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:50,177 INFO L87 Difference]: Start difference. First operand 0 states. Second operand 0 states. [2020-07-28 18:12:50,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-28 18:12:50,178 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-07-28 18:12:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:50,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:50,178 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-28 18:12:50,179 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-28 18:12:50,179 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-28 18:12:50,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-28 18:12:50,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-28 18:12:50,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-07-28 18:12:50,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-28 18:12:50,183 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-28 18:12:50,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-28 18:12:50,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-28 18:12:50,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-28 18:12:50,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-28 18:12:50,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-28 18:12:50,217 INFO L268 CegarLoopResult]: For program point L4-3(lines 4 6) no Hoare annotation was computed. [2020-07-28 18:12:50,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-28 18:12:50,218 INFO L264 CegarLoopResult]: At program point L4-5(lines 1 19) the Hoare annotation is: false [2020-07-28 18:12:50,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-28 18:12:50,218 INFO L268 CegarLoopResult]: For program point L13-2(lines 13 16) no Hoare annotation was computed. [2020-07-28 18:12:50,218 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-28 18:12:50,219 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-07-28 18:12:50,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-07-28 18:12:50,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-28 18:12:50,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-28 18:12:50,219 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-28 18:12:50,220 INFO L264 CegarLoopResult]: At program point L4-2(lines 3 16) the Hoare annotation is: (= 0 ULTIMATE.start_main_~x~0) [2020-07-28 18:12:50,225 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-28 18:12:50,225 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-28 18:12:50,226 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-28 18:12:50,226 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:12:50,227 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2020-07-28 18:12:50,227 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:12:50,228 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-28 18:12:50,228 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-28 18:12:50,228 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-28 18:12:50,228 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:12:50,228 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-28 18:12:50,229 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-28 18:12:50,229 WARN L170 areAnnotationChecker]: L5-1 has no Hoare annotation [2020-07-28 18:12:50,230 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:12:50,234 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-28 18:12:50,234 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-28 18:12:50,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.07 06:12:50 BoogieIcfgContainer [2020-07-28 18:12:50,248 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-28 18:12:50,250 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-07-28 18:12:50,251 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-07-28 18:12:50,252 INFO L275 PluginConnector]: Witness Printer initialized [2020-07-28 18:12:50,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.07 06:12:49" (3/4) ... [2020-07-28 18:12:50,258 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-07-28 18:12:50,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-07-28 18:12:50,269 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-07-28 18:12:50,316 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-07-28 18:12:50,316 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-07-28 18:12:50,320 INFO L168 Benchmark]: Toolchain (without parser) took 1306.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -107.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,321 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2020-07-28 18:12:50,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,322 INFO L168 Benchmark]: Boogie Procedure Inliner took 88.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,323 INFO L168 Benchmark]: Boogie Preprocessor took 21.99 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. [2020-07-28 18:12:50,324 INFO L168 Benchmark]: RCFGBuilder took 234.60 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,325 INFO L168 Benchmark]: TraceAbstraction took 643.76 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: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. [2020-07-28 18:12:50,325 INFO L168 Benchmark]: Witness Printer took 66.05 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. [2020-07-28 18:12:50,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 987.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 240.91 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 88.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -183.3 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.99 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 234.60 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: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 643.76 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: 39.6 MB). Peak memory consumption was 39.6 MB. Max. memory is 11.5 GB. * Witness Printer took 66.05 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: 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: 1]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 0 == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 SDtfs, 3 SDslu, 1 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...