./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/locks/test_locks_5.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_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/locks/test_locks_5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/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 4f33d015f37d4475f0ca85a8ea6311ffc3e89abb ......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:42:31,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:42:31,017 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:42:31,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:42:31,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:42:31,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:42:31,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:42:31,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:42:31,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:42:31,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:42:31,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:42:31,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:42:31,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:42:31,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:42:31,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:42:31,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:42:31,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:42:31,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:42:31,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:42:31,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:42:31,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:42:31,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:42:31,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:42:31,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:42:31,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:42:31,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:42:31,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:42:31,043 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:42:31,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:42:31,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:42:31,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:42:31,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:42:31,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:42:31,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:42:31,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:42:31,046 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:42:31,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:42:31,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:42:31,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:42:31,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:42:31,047 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:42:31,048 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 15:42:31,058 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:42:31,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:42:31,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 15:42:31,059 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 15:42:31,059 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 15:42:31,060 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 15:42:31,060 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 15:42:31,060 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 15:42:31,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 15:42:31,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:42:31,061 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:42:31,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:42:31,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:42:31,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:42:31,063 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:42:31,063 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_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/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 -> 4f33d015f37d4475f0ca85a8ea6311ffc3e89abb [2019-12-07 15:42:31,161 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:42:31,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:42:31,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:42:31,173 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:42:31,173 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:42:31,173 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/../../sv-benchmarks/c/locks/test_locks_5.c [2019-12-07 15:42:31,211 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/data/e77b3bc30/7eac3468f4ee426197a82b9369c9b09a/FLAG50aa5a254 [2019-12-07 15:42:31,626 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:42:31,626 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/sv-benchmarks/c/locks/test_locks_5.c [2019-12-07 15:42:31,630 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/data/e77b3bc30/7eac3468f4ee426197a82b9369c9b09a/FLAG50aa5a254 [2019-12-07 15:42:31,639 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/data/e77b3bc30/7eac3468f4ee426197a82b9369c9b09a [2019-12-07 15:42:31,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:42:31,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:42:31,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:42:31,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:42:31,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:42:31,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cc73ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31, skipping insertion in model container [2019-12-07 15:42:31,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:42:31,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:42:31,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:42:31,766 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:42:31,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:42:31,818 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:42:31,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31 WrapperNode [2019-12-07 15:42:31,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:42:31,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:42:31,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:42:31,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:42:31,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,827 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,840 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:42:31,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:42:31,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:42:31,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:42:31,846 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,847 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... [2019-12-07 15:42:31,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:42:31,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:42:31,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:42:31,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:42:31,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/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 15:42:31,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:42:31,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:42:32,074 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:42:32,075 INFO L287 CfgBuilder]: Removed 5 assume(true) statements. [2019-12-07 15:42:32,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:32 BoogieIcfgContainer [2019-12-07 15:42:32,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:42:32,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:42:32,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:42:32,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:42:32,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:42:31" (1/3) ... [2019-12-07 15:42:32,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3022dcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:42:32, skipping insertion in model container [2019-12-07 15:42:32,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:42:31" (2/3) ... [2019-12-07 15:42:32,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3022dcd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:42:32, skipping insertion in model container [2019-12-07 15:42:32,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:32" (3/3) ... [2019-12-07 15:42:32,081 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2019-12-07 15:42:32,087 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:42:32,091 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:42:32,098 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:42:32,114 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:42:32,114 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:42:32,115 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:42:32,115 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:42:32,115 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:42:32,115 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:42:32,115 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:42:32,115 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:42:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2019-12-07 15:42:32,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 15:42:32,127 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:32,128 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 15:42:32,128 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:32,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:32,132 INFO L82 PathProgramCache]: Analyzing trace with hash 929050359, now seen corresponding path program 1 times [2019-12-07 15:42:32,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:42:32,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593044147] [2019-12-07 15:42:32,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:32,242 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 15:42:32,243 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593044147] [2019-12-07 15:42:32,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:32,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:42:32,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565823900] [2019-12-07 15:42:32,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:32,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:42:32,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:32,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:32,258 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2019-12-07 15:42:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:32,285 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2019-12-07 15:42:32,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:42:32,287 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2019-12-07 15:42:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:32,294 INFO L225 Difference]: With dead ends: 38 [2019-12-07 15:42:32,294 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 15:42:32,296 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 15:42:32,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 15:42:32,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2019-12-07 15:42:32,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:42:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2019-12-07 15:42:32,318 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 23 transitions. Word has length 6 [2019-12-07 15:42:32,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:32,318 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 23 transitions. [2019-12-07 15:42:32,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 23 transitions. [2019-12-07 15:42:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 15:42:32,318 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:32,318 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:42:32,319 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:32,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:32,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1263994976, now seen corresponding path program 1 times [2019-12-07 15:42:32,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:42:32,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815029761] [2019-12-07 15:42:32,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:32,348 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 15:42:32,349 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815029761] [2019-12-07 15:42:32,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:32,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:42:32,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375378994] [2019-12-07 15:42:32,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:32,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:42:32,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:32,351 INFO L87 Difference]: Start difference. First operand 15 states and 23 transitions. Second operand 4 states. [2019-12-07 15:42:32,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:32,365 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2019-12-07 15:42:32,365 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:42:32,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 15:42:32,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:32,366 INFO L225 Difference]: With dead ends: 27 [2019-12-07 15:42:32,366 INFO L226 Difference]: Without dead ends: 25 [2019-12-07 15:42:32,367 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 15:42:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-12-07 15:42:32,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 15. [2019-12-07 15:42:32,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:42:32,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2019-12-07 15:42:32,370 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 22 transitions. Word has length 7 [2019-12-07 15:42:32,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:32,371 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 22 transitions. [2019-12-07 15:42:32,371 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:32,371 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 22 transitions. [2019-12-07 15:42:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 15:42:32,371 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:32,371 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:42:32,371 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:32,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:32,372 INFO L82 PathProgramCache]: Analyzing trace with hash -528923284, now seen corresponding path program 1 times [2019-12-07 15:42:32,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:42:32,372 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056805004] [2019-12-07 15:42:32,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:32,406 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 15:42:32,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056805004] [2019-12-07 15:42:32,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:32,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:42:32,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362874393] [2019-12-07 15:42:32,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:32,407 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:42:32,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:32,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:32,407 INFO L87 Difference]: Start difference. First operand 15 states and 22 transitions. Second operand 4 states. [2019-12-07 15:42:32,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:32,420 INFO L93 Difference]: Finished difference Result 25 states and 34 transitions. [2019-12-07 15:42:32,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:42:32,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 15:42:32,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:32,421 INFO L225 Difference]: With dead ends: 25 [2019-12-07 15:42:32,421 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:42:32,421 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 15:42:32,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:42:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2019-12-07 15:42:32,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:42:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2019-12-07 15:42:32,424 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 21 transitions. Word has length 8 [2019-12-07 15:42:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:32,424 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-12-07 15:42:32,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:32,424 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 21 transitions. [2019-12-07 15:42:32,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 15:42:32,425 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:32,425 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:42:32,425 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash 783463029, now seen corresponding path program 1 times [2019-12-07 15:42:32,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:42:32,425 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308313730] [2019-12-07 15:42:32,425 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:42:32,453 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308313730] [2019-12-07 15:42:32,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:32,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:42:32,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054245356] [2019-12-07 15:42:32,454 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:32,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:42:32,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:32,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:32,455 INFO L87 Difference]: Start difference. First operand 15 states and 21 transitions. Second operand 4 states. [2019-12-07 15:42:32,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:32,466 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2019-12-07 15:42:32,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:42:32,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 15:42:32,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:32,467 INFO L225 Difference]: With dead ends: 23 [2019-12-07 15:42:32,467 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 15:42:32,468 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 15:42:32,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 15:42:32,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 15. [2019-12-07 15:42:32,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 15:42:32,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2019-12-07 15:42:32,470 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 9 [2019-12-07 15:42:32,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:32,470 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2019-12-07 15:42:32,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:32,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2019-12-07 15:42:32,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:42:32,471 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:42:32,471 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:42:32,471 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:42:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:42:32,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1482233887, now seen corresponding path program 1 times [2019-12-07 15:42:32,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 15:42:32,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644135407] [2019-12-07 15:42:32,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:42:32,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:42:32,494 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 15:42:32,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644135407] [2019-12-07 15:42:32,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:42:32,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:42:32,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872792854] [2019-12-07 15:42:32,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:42:32,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 15:42:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:42:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:42:32,495 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand 4 states. [2019-12-07 15:42:32,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:42:32,504 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2019-12-07 15:42:32,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:42:32,505 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 15:42:32,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:42:32,505 INFO L225 Difference]: With dead ends: 17 [2019-12-07 15:42:32,505 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 15:42:32,505 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 15:42:32,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 15:42:32,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 15:42:32,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 15:42:32,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 15:42:32,506 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2019-12-07 15:42:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:42:32,506 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 15:42:32,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:42:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 15:42:32,506 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 15:42:32,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 15:42:32,517 INFO L246 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2019-12-07 15:42:32,517 INFO L249 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2019-12-07 15:42:32,517 INFO L246 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2019-12-07 15:42:32,517 INFO L246 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2019-12-07 15:42:32,517 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L249 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L249 CegarLoopResult]: At program point L92(lines 4 93) the Hoare annotation is: true [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2019-12-07 15:42:32,518 INFO L242 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2019-12-07 15:42:32,518 INFO L246 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2019-12-07 15:42:32,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:42:32 BoogieIcfgContainer [2019-12-07 15:42:32,525 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:42:32,525 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:42:32,525 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:42:32,525 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:42:32,526 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:42:32" (3/4) ... [2019-12-07 15:42:32,528 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 15:42:32,534 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2019-12-07 15:42:32,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-12-07 15:42:32,535 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 15:42:32,572 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0d5c68ee-497a-4a2d-8da2-b1207a5c7d02/bin/utaipan/witness.graphml [2019-12-07 15:42:32,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:42:32,574 INFO L168 Benchmark]: Toolchain (without parser) took 931.56 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.2 MB in the beginning and 1.0 GB in the end (delta: -63.5 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:32,574 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:42:32,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -149.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:32,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.27 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 15:42:32,575 INFO L168 Benchmark]: Boogie Preprocessor took 13.72 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:32,575 INFO L168 Benchmark]: RCFGBuilder took 221.48 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:32,575 INFO L168 Benchmark]: TraceAbstraction took 448.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:42:32,575 INFO L168 Benchmark]: Witness Printer took 47.17 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:42:32,577 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.05 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 98.6 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -149.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.27 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 13.72 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 221.48 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 448.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 11.5 GB. * Witness Printer took 47.17 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Result: SAFE, OverallTime: 0.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 82 SDslu, 134 SDs, 0 SdLazy, 45 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 5 MinimizatonAttempts, 36 StatesRemovedByMinimization, 4 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...