./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4078ef7bc39da0337b6d8ed5ecbbcec336a37b8 ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f4078ef7bc39da0337b6d8ed5ecbbcec336a37b8 ........................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:20,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:20,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:20,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:20,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:20,739 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:20,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:20,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:20,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:20,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:20,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:20,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:20,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:20,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:20,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:20,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:20,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:20,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:20,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:20,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:20,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:20,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:20,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:20,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:20,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:20,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:20,772 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:20,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:20,773 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:20,774 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:20,774 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:20,775 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:20,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:20,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:20,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:20,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:20,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:20,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:20,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:20,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:20,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:20,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:20,794 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:20,795 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:20,795 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:20,796 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:20,796 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:20,796 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:20,796 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:20,796 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:20,797 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:20,797 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:20,797 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:20,797 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:20,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:20,798 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:20,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:20,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:20,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:20,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:20,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:20,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:20,799 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:20,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:20,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:20,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:20,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:20,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:20,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:20,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:20,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:20,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:20,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:20,803 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:20,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:20,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:20,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:20,804 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan 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 -> Taipan 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 -> f4078ef7bc39da0337b6d8ed5ecbbcec336a37b8 [2019-10-22 11:26:20,842 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:20,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:20,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:20,858 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:20,858 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:20,859 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2019-10-22 11:26:20,912 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/6d2d2338b/8eed0b9e282f428e9aaeb0db0093bf88/FLAGf1ce1dbbb [2019-10-22 11:26:21,275 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:21,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2019-10-22 11:26:21,281 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/6d2d2338b/8eed0b9e282f428e9aaeb0db0093bf88/FLAGf1ce1dbbb [2019-10-22 11:26:21,691 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/6d2d2338b/8eed0b9e282f428e9aaeb0db0093bf88 [2019-10-22 11:26:21,699 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:21,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:21,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:21,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:21,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:21,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:21,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e8d2c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21, skipping insertion in model container [2019-10-22 11:26:21,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:21,717 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:21,733 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:21,867 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:21,872 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:21,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:21,972 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:21,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21 WrapperNode [2019-10-22 11:26:21,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:21,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:21,974 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:21,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:21,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:21,990 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:22,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:22,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:22,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:22,023 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... [2019-10-22 11:26:22,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:22,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:22,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:22,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:22,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/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 [2019-10-22 11:26:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:22,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-22 11:26:22,111 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-22 11:26:22,302 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:22,302 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:22,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:22 BoogieIcfgContainer [2019-10-22 11:26:22,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:22,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:22,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:22,311 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:22,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:21" (1/3) ... [2019-10-22 11:26:22,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f45e197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:22, skipping insertion in model container [2019-10-22 11:26:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:21" (2/3) ... [2019-10-22 11:26:22,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f45e197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:22, skipping insertion in model container [2019-10-22 11:26:22,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:22" (3/3) ... [2019-10-22 11:26:22,316 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2019-10-22 11:26:22,326 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:22,333 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:22,348 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:22,375 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:22,376 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:22,376 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:22,376 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:22,376 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:22,376 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:22,377 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:22,377 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:22,396 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 11:26:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:22,402 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,403 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,405 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,411 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-10-22 11:26:22,421 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,421 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140326672] [2019-10-22 11:26:22,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,422 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,422 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:22,613 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140326672] [2019-10-22 11:26:22,614 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:22,614 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:22,614 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484283154] [2019-10-22 11:26:22,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:22,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:22,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:22,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:22,634 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 5 states. [2019-10-22 11:26:22,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:22,732 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-22 11:26:22,733 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:26:22,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-22 11:26:22,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:22,745 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:26:22,745 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:26:22,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:26:22,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:26:22,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:26:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:26:22,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-22 11:26:22,787 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-10-22 11:26:22,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:22,788 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-22 11:26:22,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-22 11:26:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:22,790 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:22,790 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:22,790 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:22,791 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-10-22 11:26:22,791 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:22,791 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286800362] [2019-10-22 11:26:22,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:22,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:22,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,857 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:22,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286800362] [2019-10-22 11:26:22,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40269827] [2019-10-22 11:26:22,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:22,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:22,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:26:22,958 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:23,113 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 11:26:23,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-22 11:26:23,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1321945505] [2019-10-22 11:26:23,151 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 16 [2019-10-22 11:26:23,199 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:23,203 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:23,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:23,480 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:26:23,485 INFO L168 Benchmark]: Toolchain (without parser) took 1783.42 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.4 MB in the beginning and 1.0 GB in the end (delta: -84.5 MB). Peak memory consumption was 37.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,486 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:23,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,488 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.50 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,488 INFO L168 Benchmark]: Boogie Preprocessor took 24.62 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. [2019-10-22 11:26:23,488 INFO L168 Benchmark]: RCFGBuilder took 269.60 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,489 INFO L168 Benchmark]: TraceAbstraction took 1178.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:23,494 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 272.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.50 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: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 24.62 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 269.60 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: 27.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1178.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 66.2 MB). Peak memory consumption was 66.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:25,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:25,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:25,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:25,832 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:25,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:25,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:25,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:25,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:25,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:25,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:25,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:25,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:25,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:25,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:25,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:25,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:25,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:25,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:25,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:25,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:25,860 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:25,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:25,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:25,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:25,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:25,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:25,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:25,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:25,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:25,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:25,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:25,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:25,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:25,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:25,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:25,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:25,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:25,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:25,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:25,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:25,877 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:25,896 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:25,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:25,897 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:25,897 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:25,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:25,897 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:25,897 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:25,909 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:25,909 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:25,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:25,910 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:25,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:25,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:25,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:25,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:25,912 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:25,912 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:25,912 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:25,912 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:25,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:25,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:25,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:25,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:25,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:25,914 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan 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 -> Taipan 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 -> f4078ef7bc39da0337b6d8ed5ecbbcec336a37b8 [2019-10-22 11:26:25,952 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:25,968 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:25,972 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:25,973 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:25,974 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:25,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/../../sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2019-10-22 11:26:26,022 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/138bdc8e1/6977051082ea4e99a8c1e51670ea2549/FLAG0bd661327 [2019-10-22 11:26:26,420 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:26,421 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/sv-benchmarks/c/recursive-simple/sum_20x0-2.c [2019-10-22 11:26:26,430 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/138bdc8e1/6977051082ea4e99a8c1e51670ea2549/FLAG0bd661327 [2019-10-22 11:26:26,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/data/138bdc8e1/6977051082ea4e99a8c1e51670ea2549 [2019-10-22 11:26:26,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:26,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:26,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:26,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:26,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:26,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@148e076e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26, skipping insertion in model container [2019-10-22 11:26:26,457 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,464 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:26,480 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:26,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:26,661 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:26,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:26,695 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:26,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26 WrapperNode [2019-10-22 11:26:26,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:26,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:26,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:26,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:26,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,714 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:26,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:26,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:26,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:26,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,854 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... [2019-10-22 11:26:26,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:26,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:26,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:26,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:26,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/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 [2019-10-22 11:26:26,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:26,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:26,929 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2019-10-22 11:26:26,929 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2019-10-22 11:26:27,145 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:27,146 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-22 11:26:27,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:27 BoogieIcfgContainer [2019-10-22 11:26:27,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:27,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:27,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:27,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:27,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:26" (1/3) ... [2019-10-22 11:26:27,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3697359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:27, skipping insertion in model container [2019-10-22 11:26:27,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:26" (2/3) ... [2019-10-22 11:26:27,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3697359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:27, skipping insertion in model container [2019-10-22 11:26:27,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:27" (3/3) ... [2019-10-22 11:26:27,156 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_20x0-2.c [2019-10-22 11:26:27,183 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:27,202 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:26:27,223 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:26:27,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:27,266 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:27,267 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:27,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:27,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:27,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:27,267 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:27,267 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:27,283 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-10-22 11:26:27,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 11:26:27,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:27,291 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:27,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:27,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:27,299 INFO L82 PathProgramCache]: Analyzing trace with hash 389977641, now seen corresponding path program 1 times [2019-10-22 11:26:27,310 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:27,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1692614818] [2019-10-22 11:26:27,311 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:27,401 WARN L254 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-22 11:26:27,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:27,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:27,561 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:27,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:27,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1692614818] [2019-10-22 11:26:27,904 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:27,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 10 [2019-10-22 11:26:27,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641889029] [2019-10-22 11:26:27,908 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:26:27,908 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:27,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:26:27,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:26:27,929 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 10 states. [2019-10-22 11:26:28,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:28,123 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2019-10-22 11:26:28,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:26:28,125 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2019-10-22 11:26:28,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:28,136 INFO L225 Difference]: With dead ends: 24 [2019-10-22 11:26:28,136 INFO L226 Difference]: Without dead ends: 14 [2019-10-22 11:26:28,140 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:28,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2019-10-22 11:26:28,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 11:26:28,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 11:26:28,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-10-22 11:26:28,185 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2019-10-22 11:26:28,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:28,186 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-10-22 11:26:28,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:26:28,186 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-10-22 11:26:28,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:26:28,187 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:28,188 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:28,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:28,389 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:28,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:28,389 INFO L82 PathProgramCache]: Analyzing trace with hash -881029229, now seen corresponding path program 1 times [2019-10-22 11:26:28,390 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:28,390 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1275617486] [2019-10-22 11:26:28,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:28,433 WARN L254 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 16 conjunts are in the unsatisfiable core [2019-10-22 11:26:28,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:28,618 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:26:28,618 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:29,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-22 11:26:29,215 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1275617486] [2019-10-22 11:26:29,216 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:29,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 11 [2019-10-22 11:26:29,216 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532735720] [2019-10-22 11:26:29,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-22 11:26:29,218 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:26:29,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-22 11:26:29,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-22 11:26:29,219 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 11 states. [2019-10-22 11:26:29,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:29,428 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-10-22 11:26:29,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 11:26:29,430 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2019-10-22 11:26:29,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:29,430 INFO L225 Difference]: With dead ends: 14 [2019-10-22 11:26:29,430 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:26:29,432 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:26:29,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:26:29,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:26:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:26:29,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:26:29,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-10-22 11:26:29,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:29,435 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:26:29,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-22 11:26:29,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:26:29,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:26:29,636 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-22 11:26:29,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-22 11:26:29,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-10-22 11:26:29,698 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-22 11:26:29,699 INFO L443 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2019-10-22 11:26:29,699 INFO L443 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2019-10-22 11:26:29,699 INFO L439 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (= (_ bv20 32) ULTIMATE.start_main_~a~0) (= (_ bv0 32) ULTIMATE.start_main_~b~0)) [2019-10-22 11:26:29,699 INFO L443 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-10-22 11:26:29,700 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2019-10-22 11:26:29,700 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 18) no Hoare annotation was computed. [2019-10-22 11:26:29,700 INFO L443 ceAbstractionStarter]: For program point sumEXIT(lines 3 9) no Hoare annotation was computed. [2019-10-22 11:26:29,700 INFO L439 ceAbstractionStarter]: At program point L7(line 7) the Hoare annotation is: (and (= |sum_#in~m| sum_~m) (= |sum_#in~n| sum_~n)) [2019-10-22 11:26:29,700 INFO L443 ceAbstractionStarter]: For program point L7-1(line 7) no Hoare annotation was computed. [2019-10-22 11:26:29,701 INFO L443 ceAbstractionStarter]: For program point L4(lines 4 8) no Hoare annotation was computed. [2019-10-22 11:26:29,701 INFO L443 ceAbstractionStarter]: For program point sumFINAL(lines 3 9) no Hoare annotation was computed. [2019-10-22 11:26:29,701 INFO L446 ceAbstractionStarter]: At program point sumENTRY(lines 3 9) the Hoare annotation is: true [2019-10-22 11:26:29,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:29 BoogieIcfgContainer [2019-10-22 11:26:29,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:29,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:29,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:29,705 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:29,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:27" (3/4) ... [2019-10-22 11:26:29,710 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:26:29,717 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure sum [2019-10-22 11:26:29,721 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-10-22 11:26:29,722 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:26:29,762 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f8d91052-b04f-4430-9284-d1604fb5e434/bin/utaipan/witness.graphml [2019-10-22 11:26:29,762 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:29,764 INFO L168 Benchmark]: Toolchain (without parser) took 3316.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 952.3 MB in the beginning and 1.0 GB in the end (delta: -69.6 MB). Peak memory consumption was 98.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,765 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:29,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,766 INFO L168 Benchmark]: Boogie Procedure Inliner took 136.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,767 INFO L168 Benchmark]: Boogie Preprocessor took 22.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:29,767 INFO L168 Benchmark]: RCFGBuilder took 290.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,768 INFO L168 Benchmark]: TraceAbstraction took 2556.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 115.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,768 INFO L168 Benchmark]: Witness Printer took 57.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:29,778 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 247.87 ms. Allocated memory is still 1.0 GB. Free memory was 952.3 MB in the beginning and 941.6 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 136.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 941.6 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.47 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 290.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2556.41 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 115.5 MB). Peak memory consumption was 115.5 MB. Max. memory is 11.5 GB. * Witness Printer took 57.62 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 15 locations, 1 error locations. Result: SAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 25 SDslu, 45 SDs, 0 SdLazy, 104 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 15 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 3258 SizeOfPredicates, 12 NumberOfNonLiveVariables, 44 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 8/8 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...