./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_7.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/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 ccd6d122756047ddb1225c106ac06a6748e14c22 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 19:38:29,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 19:38:29,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 19:38:29,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 19:38:29,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 19:38:29,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 19:38:29,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 19:38:29,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 19:38:29,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 19:38:29,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 19:38:29,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 19:38:29,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 19:38:29,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 19:38:29,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 19:38:29,987 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 19:38:29,988 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 19:38:29,988 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 19:38:29,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 19:38:29,991 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 19:38:29,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 19:38:29,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 19:38:29,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 19:38:29,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 19:38:29,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 19:38:29,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 19:38:29,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 19:38:29,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 19:38:29,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 19:38:30,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 19:38:30,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 19:38:30,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 19:38:30,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 19:38:30,002 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 19:38:30,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 19:38:30,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 19:38:30,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 19:38:30,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 19:38:30,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 19:38:30,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 19:38:30,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 19:38:30,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 19:38:30,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 19:38:30,018 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 19:38:30,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 19:38:30,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 19:38:30,019 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 19:38:30,019 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 19:38:30,019 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 19:38:30,020 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 19:38:30,021 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 19:38:30,021 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 19:38:30,021 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 19:38:30,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 19:38:30,021 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 19:38:30,022 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 19:38:30,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 19:38:30,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 19:38:30,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 19:38:30,024 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 19:38:30,024 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/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/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 -> ccd6d122756047ddb1225c106ac06a6748e14c22 [2019-12-07 19:38:30,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 19:38:30,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 19:38:30,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 19:38:30,139 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 19:38:30,139 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 19:38:30,140 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_7.c [2019-12-07 19:38:30,177 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/data/f9a013707/a8e5b4f556234f02a5bfed4c39c582c2/FLAG665833f10 [2019-12-07 19:38:30,490 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 19:38:30,490 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/sv-benchmarks/c/locks/test_locks_7.c [2019-12-07 19:38:30,495 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/data/f9a013707/a8e5b4f556234f02a5bfed4c39c582c2/FLAG665833f10 [2019-12-07 19:38:30,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/data/f9a013707/a8e5b4f556234f02a5bfed4c39c582c2 [2019-12-07 19:38:30,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 19:38:30,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 19:38:30,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 19:38:30,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 19:38:30,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 19:38:30,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@374ca533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30, skipping insertion in model container [2019-12-07 19:38:30,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 19:38:30,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 19:38:30,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:38:30,686 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 19:38:30,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 19:38:30,712 INFO L208 MainTranslator]: Completed translation [2019-12-07 19:38:30,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30 WrapperNode [2019-12-07 19:38:30,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 19:38:30,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 19:38:30,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 19:38:30,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 19:38:30,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,723 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 19:38:30,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 19:38:30,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 19:38:30,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 19:38:30,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,748 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... [2019-12-07 19:38:30,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 19:38:30,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 19:38:30,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 19:38:30,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 19:38:30,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/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 [2019-12-07 19:38:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 19:38:30,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 19:38:31,019 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 19:38:31,019 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 19:38:31,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:38:31 BoogieIcfgContainer [2019-12-07 19:38:31,020 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 19:38:31,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 19:38:31,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 19:38:31,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 19:38:31,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 07:38:30" (1/3) ... [2019-12-07 19:38:31,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2591a1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:38:31, skipping insertion in model container [2019-12-07 19:38:31,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 07:38:30" (2/3) ... [2019-12-07 19:38:31,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2591a1ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 07:38:31, skipping insertion in model container [2019-12-07 19:38:31,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:38:31" (3/3) ... [2019-12-07 19:38:31,025 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_7.c [2019-12-07 19:38:31,031 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 19:38:31,035 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 19:38:31,042 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 19:38:31,057 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 19:38:31,057 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 19:38:31,057 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 19:38:31,057 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 19:38:31,057 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 19:38:31,057 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 19:38:31,058 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 19:38:31,058 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 19:38:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-12-07 19:38:31,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 19:38:31,070 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,070 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,071 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 930194355, now seen corresponding path program 1 times [2019-12-07 19:38:31,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98703884] [2019-12-07 19:38:31,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,189 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98703884] [2019-12-07 19:38:31,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024916808] [2019-12-07 19:38:31,193 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,203 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 4 states. [2019-12-07 19:38:31,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,232 INFO L93 Difference]: Finished difference Result 46 states and 73 transitions. [2019-12-07 19:38:31,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 19:38:31,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,240 INFO L225 Difference]: With dead ends: 46 [2019-12-07 19:38:31,240 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 19:38:31,242 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 19:38:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 19. [2019-12-07 19:38:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 31 transitions. [2019-12-07 19:38:31,265 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 31 transitions. Word has length 6 [2019-12-07 19:38:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,265 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 31 transitions. [2019-12-07 19:38:31,265 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 31 transitions. [2019-12-07 19:38:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 19:38:31,266 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,266 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,266 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,266 INFO L82 PathProgramCache]: Analyzing trace with hash -1228531748, now seen corresponding path program 1 times [2019-12-07 19:38:31,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,267 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457689326] [2019-12-07 19:38:31,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457689326] [2019-12-07 19:38:31,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841819243] [2019-12-07 19:38:31,299 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,300 INFO L87 Difference]: Start difference. First operand 19 states and 31 transitions. Second operand 4 states. [2019-12-07 19:38:31,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,314 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2019-12-07 19:38:31,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 19:38:31,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,315 INFO L225 Difference]: With dead ends: 35 [2019-12-07 19:38:31,315 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 19:38:31,316 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 19:38:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 19. [2019-12-07 19:38:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 30 transitions. [2019-12-07 19:38:31,319 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 30 transitions. Word has length 7 [2019-12-07 19:38:31,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,319 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 30 transitions. [2019-12-07 19:38:31,319 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,319 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 30 transitions. [2019-12-07 19:38:31,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 19:38:31,319 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,319 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,320 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,320 INFO L82 PathProgramCache]: Analyzing trace with hash 570436136, now seen corresponding path program 1 times [2019-12-07 19:38:31,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134280064] [2019-12-07 19:38:31,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,352 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134280064] [2019-12-07 19:38:31,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324741378] [2019-12-07 19:38:31,352 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,353 INFO L87 Difference]: Start difference. First operand 19 states and 30 transitions. Second operand 4 states. [2019-12-07 19:38:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,366 INFO L93 Difference]: Finished difference Result 33 states and 50 transitions. [2019-12-07 19:38:31,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 19:38:31,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,367 INFO L225 Difference]: With dead ends: 33 [2019-12-07 19:38:31,367 INFO L226 Difference]: Without dead ends: 31 [2019-12-07 19:38:31,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-12-07 19:38:31,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 19. [2019-12-07 19:38:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 29 transitions. [2019-12-07 19:38:31,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 29 transitions. Word has length 8 [2019-12-07 19:38:31,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,370 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 29 transitions. [2019-12-07 19:38:31,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 29 transitions. [2019-12-07 19:38:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 19:38:31,371 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,371 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,371 INFO L82 PathProgramCache]: Analyzing trace with hash 503866033, now seen corresponding path program 1 times [2019-12-07 19:38:31,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872032364] [2019-12-07 19:38:31,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,397 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872032364] [2019-12-07 19:38:31,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632658014] [2019-12-07 19:38:31,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,398 INFO L87 Difference]: Start difference. First operand 19 states and 29 transitions. Second operand 4 states. [2019-12-07 19:38:31,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,411 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2019-12-07 19:38:31,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,411 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 19:38:31,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,412 INFO L225 Difference]: With dead ends: 31 [2019-12-07 19:38:31,412 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 19:38:31,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 19:38:31,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2019-12-07 19:38:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 28 transitions. [2019-12-07 19:38:31,415 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 28 transitions. Word has length 9 [2019-12-07 19:38:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,415 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 28 transitions. [2019-12-07 19:38:31,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,415 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 28 transitions. [2019-12-07 19:38:31,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 19:38:31,415 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,415 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,415 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1559806819, now seen corresponding path program 1 times [2019-12-07 19:38:31,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,416 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081188984] [2019-12-07 19:38:31,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,439 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081188984] [2019-12-07 19:38:31,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624529451] [2019-12-07 19:38:31,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,440 INFO L87 Difference]: Start difference. First operand 19 states and 28 transitions. Second operand 4 states. [2019-12-07 19:38:31,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,451 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2019-12-07 19:38:31,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 19:38:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,452 INFO L225 Difference]: With dead ends: 29 [2019-12-07 19:38:31,452 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 19:38:31,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 19:38:31,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2019-12-07 19:38:31,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2019-12-07 19:38:31,455 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 27 transitions. Word has length 10 [2019-12-07 19:38:31,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,455 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 27 transitions. [2019-12-07 19:38:31,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,455 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 27 transitions. [2019-12-07 19:38:31,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 19:38:31,455 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,455 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,456 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1109155450, now seen corresponding path program 1 times [2019-12-07 19:38:31,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,456 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894129235] [2019-12-07 19:38:31,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,479 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894129235] [2019-12-07 19:38:31,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515276841] [2019-12-07 19:38:31,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,480 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 4 states. [2019-12-07 19:38:31,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,490 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2019-12-07 19:38:31,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 19:38:31,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,491 INFO L225 Difference]: With dead ends: 27 [2019-12-07 19:38:31,491 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 19:38:31,492 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 19:38:31,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2019-12-07 19:38:31,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 19:38:31,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2019-12-07 19:38:31,493 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 11 [2019-12-07 19:38:31,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,494 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2019-12-07 19:38:31,494 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,494 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2019-12-07 19:38:31,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-12-07 19:38:31,494 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 19:38:31,494 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 19:38:31,494 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 19:38:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 19:38:31,495 INFO L82 PathProgramCache]: Analyzing trace with hash -23864558, now seen corresponding path program 1 times [2019-12-07 19:38:31,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 19:38:31,495 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722465186] [2019-12-07 19:38:31,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 19:38:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 19:38:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 19:38:31,520 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722465186] [2019-12-07 19:38:31,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 19:38:31,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 19:38:31,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100159847] [2019-12-07 19:38:31,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 19:38:31,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 19:38:31,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 19:38:31,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,521 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand 4 states. [2019-12-07 19:38:31,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 19:38:31,531 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2019-12-07 19:38:31,532 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 19:38:31,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-12-07 19:38:31,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 19:38:31,532 INFO L225 Difference]: With dead ends: 21 [2019-12-07 19:38:31,532 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 19:38:31,532 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 19:38:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 19:38:31,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 19:38:31,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 19:38:31,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 19:38:31,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2019-12-07 19:38:31,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 19:38:31,533 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 19:38:31,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 19:38:31,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 19:38:31,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 19:38:31,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 19:38:31,544 INFO L246 CegarLoopResult]: For program point L102(line 102) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L86-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L249 CegarLoopResult]: At program point L111-1(lines 30 116) the Hoare annotation is: true [2019-12-07 19:38:31,545 INFO L249 CegarLoopResult]: At program point L120(lines 4 121) the Hoare annotation is: true [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L242 CegarLoopResult]: At program point L112-1(lines 5 121) the Hoare annotation is: false [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L96-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L81-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L106-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2019-12-07 19:38:31,545 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 119) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L107(line 107) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L91-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L75-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L92(line 92) no Hoare annotation was computed. [2019-12-07 19:38:31,546 INFO L249 CegarLoopResult]: At program point L117(lines 5 121) the Hoare annotation is: true [2019-12-07 19:38:31,546 INFO L246 CegarLoopResult]: For program point L101-1(lines 30 116) no Hoare annotation was computed. [2019-12-07 19:38:31,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 07:38:31 BoogieIcfgContainer [2019-12-07 19:38:31,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 19:38:31,554 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 19:38:31,554 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 19:38:31,554 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 19:38:31,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 07:38:31" (3/4) ... [2019-12-07 19:38:31,556 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 19:38:31,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-12-07 19:38:31,564 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 19:38:31,565 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 19:38:31,610 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c4692dca-1d6a-4711-85dd-8c7ae5d5f4c0/bin/utaipan/witness.graphml [2019-12-07 19:38:31,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 19:38:31,611 INFO L168 Benchmark]: Toolchain (without parser) took 1104.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 943.4 MB in the beginning and 980.4 MB in the end (delta: -37.0 MB). Peak memory consumption was 66.3 MB. Max. memory is 11.5 GB. [2019-12-07 19:38:31,611 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:38:31,612 INFO L168 Benchmark]: CACSL2BoogieTranslator took 205.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 19:38:31,612 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:38:31,612 INFO L168 Benchmark]: Boogie Preprocessor took 14.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 19:38:31,612 INFO L168 Benchmark]: RCFGBuilder took 269.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-12-07 19:38:31,612 INFO L168 Benchmark]: TraceAbstraction took 532.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.1 MB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 11.5 GB. [2019-12-07 19:38:31,613 INFO L168 Benchmark]: Witness Printer took 56.27 ms. Allocated memory is still 1.1 GB. Free memory was 987.1 MB in the beginning and 980.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 19:38:31,614 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 205.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 103.3 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -153.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.95 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 269.43 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 532.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 987.1 MB in the end (delta: 76.5 MB). Peak memory consumption was 76.5 MB. Max. memory is 11.5 GB. * Witness Printer took 56.27 ms. Allocated memory is still 1.1 GB. Free memory was 987.1 MB in the beginning and 980.4 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 119]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 22 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 187 SDtfs, 156 SDslu, 263 SDs, 0 SdLazy, 63 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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, 7 MinimizatonAttempts, 66 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 9 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 2100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...