./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-lit/fkp2014.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-lit/fkp2014.i -s /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/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 f9585513ea3d4c8794f0f67c1732696b04d1d743 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:58:43,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:58:43,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:58:43,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:58:43,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:58:43,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:58:43,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:58:43,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:58:43,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:58:43,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:58:43,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:58:43,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:58:43,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:58:43,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:58:43,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:58:43,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:58:43,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:58:43,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:58:43,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:58:43,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:58:43,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:58:43,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:58:43,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:58:43,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:58:43,856 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:58:43,857 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:58:43,857 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:58:43,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:58:43,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:58:43,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:58:43,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:58:43,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:58:43,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:58:43,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:58:43,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:58:43,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:58:43,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:58:43,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:58:43,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:58:43,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:58:43,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:58:43,866 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:58:43,879 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:58:43,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:58:43,880 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:58:43,880 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:58:43,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:58:43,881 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:58:43,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:58:43,881 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:58:43,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:58:43,882 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:58:43,882 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:58:43,882 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:58:43,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:58:43,883 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:58:43,883 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:58:43,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:58:43,884 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:58:43,884 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:58:43,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:58:43,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:58:43,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:58:43,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:58:43,885 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:58:43,885 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:58:43,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:58:43,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:58:43,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:58:43,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:58:43,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:58:43,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:58:43,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:58:43,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:58:43,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:58:43,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:58:43,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:58:43,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:58:43,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:58:43,888 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_17ffbbaa-1aa6-453c-a251-70fd1d898626/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 -> f9585513ea3d4c8794f0f67c1732696b04d1d743 [2019-11-26 02:58:44,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:58:44,040 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:58:44,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:58:44,048 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:58:44,048 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:58:44,049 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/../../sv-benchmarks/c/pthread-lit/fkp2014.i [2019-11-26 02:58:44,092 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/data/9d824d1d5/ef4c4396c9de4d84b373d5fab9aee4d5/FLAG218c3309e [2019-11-26 02:58:44,538 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:58:44,539 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/sv-benchmarks/c/pthread-lit/fkp2014.i [2019-11-26 02:58:44,555 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/data/9d824d1d5/ef4c4396c9de4d84b373d5fab9aee4d5/FLAG218c3309e [2019-11-26 02:58:44,565 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/data/9d824d1d5/ef4c4396c9de4d84b373d5fab9aee4d5 [2019-11-26 02:58:44,567 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:58:44,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:58:44,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:44,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:58:44,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:58:44,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:44" (1/1) ... [2019-11-26 02:58:44,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e07cbcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:44, skipping insertion in model container [2019-11-26 02:58:44,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:58:44" (1/1) ... [2019-11-26 02:58:44,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:58:44,622 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:58:45,052 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:45,064 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:58:45,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:58:45,172 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:58:45,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45 WrapperNode [2019-11-26 02:58:45,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:58:45,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:45,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:58:45,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:58:45,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:58:45,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:58:45,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:58:45,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:58:45,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... [2019-11-26 02:58:45,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:58:45,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:58:45,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:58:45,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:58:45,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/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 [2019-11-26 02:58:45,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-26 02:58:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-26 02:58:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2019-11-26 02:58:45,290 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2019-11-26 02:58:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:58:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:58:45,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-26 02:58:45,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:58:45,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:58:45,292 WARN L202 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-26 02:58:45,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:58:45,594 INFO L284 CfgBuilder]: Removed 11 assume(true) statements. [2019-11-26 02:58:45,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:45 BoogieIcfgContainer [2019-11-26 02:58:45,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:58:45,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:58:45,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:58:45,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:58:45,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:58:44" (1/3) ... [2019-11-26 02:58:45,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add7258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:45, skipping insertion in model container [2019-11-26 02:58:45,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:58:45" (2/3) ... [2019-11-26 02:58:45,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7add7258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:58:45, skipping insertion in model container [2019-11-26 02:58:45,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:45" (3/3) ... [2019-11-26 02:58:45,602 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2014.i [2019-11-26 02:58:45,632 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,633 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,633 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,633 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,634 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,634 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,634 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,635 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,635 WARN L315 ript$VariableManager]: TermVariabe thrThread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,636 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,636 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,636 WARN L315 ript$VariableManager]: TermVariabe |thrThread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,637 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,637 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,637 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,637 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,638 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,638 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,638 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,638 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,638 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,639 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,639 WARN L315 ript$VariableManager]: TermVariabe thrThread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,640 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,640 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,640 WARN L315 ript$VariableManager]: TermVariabe |thrThread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,641 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,641 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,641 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,641 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,642 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_inct_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,642 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,642 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,642 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,642 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,643 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,643 WARN L315 ript$VariableManager]: TermVariabe thrThread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,643 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_incs_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,643 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,644 WARN L315 ript$VariableManager]: TermVariabe |thrThread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-26 02:58:45,655 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-26 02:58:45,655 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:58:45,661 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:58:45,671 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:58:45,687 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:58:45,688 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:58:45,688 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:58:45,688 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:58:45,688 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:58:45,688 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:58:45,688 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:58:45,689 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:58:45,702 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 68 transitions [2019-11-26 02:58:48,048 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 24517 states. [2019-11-26 02:58:48,050 INFO L276 IsEmpty]: Start isEmpty. Operand 24517 states. [2019-11-26 02:58:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-26 02:58:48,057 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:48,057 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:48,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:48,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:48,063 INFO L82 PathProgramCache]: Analyzing trace with hash 787087424, now seen corresponding path program 1 times [2019-11-26 02:58:48,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:48,071 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167281501] [2019-11-26 02:58:48,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:48,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:48,334 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167281501] [2019-11-26 02:58:48,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:48,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:58:48,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860545288] [2019-11-26 02:58:48,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:58:48,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:48,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:58:48,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:58:48,352 INFO L87 Difference]: Start difference. First operand 24517 states. Second operand 7 states. [2019-11-26 02:58:48,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:48,939 INFO L93 Difference]: Finished difference Result 28157 states and 99301 transitions. [2019-11-26 02:58:48,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:58:48,940 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2019-11-26 02:58:48,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:49,325 INFO L225 Difference]: With dead ends: 28157 [2019-11-26 02:58:49,326 INFO L226 Difference]: Without dead ends: 25615 [2019-11-26 02:58:49,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:58:49,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25615 states. [2019-11-26 02:58:50,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25615 to 23035. [2019-11-26 02:58:50,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23035 states. [2019-11-26 02:58:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23035 states to 23035 states and 81803 transitions. [2019-11-26 02:58:50,577 INFO L78 Accepts]: Start accepts. Automaton has 23035 states and 81803 transitions. Word has length 26 [2019-11-26 02:58:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:50,578 INFO L462 AbstractCegarLoop]: Abstraction has 23035 states and 81803 transitions. [2019-11-26 02:58:50,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:58:50,578 INFO L276 IsEmpty]: Start isEmpty. Operand 23035 states and 81803 transitions. [2019-11-26 02:58:50,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:58:50,588 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:50,588 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:50,589 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:50,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:50,589 INFO L82 PathProgramCache]: Analyzing trace with hash 724490519, now seen corresponding path program 1 times [2019-11-26 02:58:50,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:50,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942261377] [2019-11-26 02:58:50,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:58:50,725 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942261377] [2019-11-26 02:58:50,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:50,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:58:50,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742043535] [2019-11-26 02:58:50,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:58:50,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:50,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:58:50,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:58:50,728 INFO L87 Difference]: Start difference. First operand 23035 states and 81803 transitions. Second operand 7 states. [2019-11-26 02:58:51,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:51,105 INFO L93 Difference]: Finished difference Result 26720 states and 93003 transitions. [2019-11-26 02:58:51,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:58:51,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2019-11-26 02:58:51,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:51,199 INFO L225 Difference]: With dead ends: 26720 [2019-11-26 02:58:51,199 INFO L226 Difference]: Without dead ends: 25502 [2019-11-26 02:58:51,200 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:58:51,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25502 states. [2019-11-26 02:58:51,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25502 to 22922. [2019-11-26 02:58:51,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22922 states. [2019-11-26 02:58:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22922 states to 22922 states and 80444 transitions. [2019-11-26 02:58:51,957 INFO L78 Accepts]: Start accepts. Automaton has 22922 states and 80444 transitions. Word has length 33 [2019-11-26 02:58:51,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:51,957 INFO L462 AbstractCegarLoop]: Abstraction has 22922 states and 80444 transitions. [2019-11-26 02:58:51,958 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:58:51,958 INFO L276 IsEmpty]: Start isEmpty. Operand 22922 states and 80444 transitions. [2019-11-26 02:58:51,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:58:51,963 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:51,963 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:51,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:51,964 INFO L82 PathProgramCache]: Analyzing trace with hash 86910085, now seen corresponding path program 1 times [2019-11-26 02:58:51,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:51,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867110760] [2019-11-26 02:58:51,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:52,390 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867110760] [2019-11-26 02:58:52,391 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781834480] [2019-11-26 02:58:52,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:52,469 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:58:52,475 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:52,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:58:52,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:52,628 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:52,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-26 02:58:52,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:58:52,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2019-11-26 02:58:52,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81978221] [2019-11-26 02:58:52,703 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:58:52,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:52,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:58:52,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:58:52,703 INFO L87 Difference]: Start difference. First operand 22922 states and 80444 transitions. Second operand 7 states. [2019-11-26 02:58:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:53,304 INFO L93 Difference]: Finished difference Result 45692 states and 156578 transitions. [2019-11-26 02:58:53,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-26 02:58:53,304 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-26 02:58:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:53,446 INFO L225 Difference]: With dead ends: 45692 [2019-11-26 02:58:53,447 INFO L226 Difference]: Without dead ends: 43946 [2019-11-26 02:58:53,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 68 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2019-11-26 02:58:53,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43946 states. [2019-11-26 02:58:54,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43946 to 24506. [2019-11-26 02:58:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24506 states. [2019-11-26 02:58:54,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24506 states to 24506 states and 85937 transitions. [2019-11-26 02:58:54,737 INFO L78 Accepts]: Start accepts. Automaton has 24506 states and 85937 transitions. Word has length 40 [2019-11-26 02:58:54,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:54,738 INFO L462 AbstractCegarLoop]: Abstraction has 24506 states and 85937 transitions. [2019-11-26 02:58:54,738 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:58:54,738 INFO L276 IsEmpty]: Start isEmpty. Operand 24506 states and 85937 transitions. [2019-11-26 02:58:54,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:58:54,741 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:54,741 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:54,952 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:54,952 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:54,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:54,953 INFO L82 PathProgramCache]: Analyzing trace with hash -2132175163, now seen corresponding path program 2 times [2019-11-26 02:58:54,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:54,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627151083] [2019-11-26 02:58:54,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:55,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:55,088 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627151083] [2019-11-26 02:58:55,089 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76360280] [2019-11-26 02:58:55,089 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:55,151 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-26 02:58:55,152 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:58:55,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:58:55,155 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:55,251 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:58:55,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:55,276 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:55,344 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:58:55,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [9] total 18 [2019-11-26 02:58:55,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845082882] [2019-11-26 02:58:55,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:58:55,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:55,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:58:55,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:58:55,346 INFO L87 Difference]: Start difference. First operand 24506 states and 85937 transitions. Second operand 14 states. [2019-11-26 02:58:56,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:56,176 INFO L93 Difference]: Finished difference Result 37754 states and 130817 transitions. [2019-11-26 02:58:56,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-26 02:58:56,176 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2019-11-26 02:58:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:56,368 INFO L225 Difference]: With dead ends: 37754 [2019-11-26 02:58:56,369 INFO L226 Difference]: Without dead ends: 34919 [2019-11-26 02:58:56,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2019-11-26 02:58:56,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34919 states. [2019-11-26 02:58:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34919 to 18194. [2019-11-26 02:58:56,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18194 states. [2019-11-26 02:58:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18194 states to 18194 states and 63560 transitions. [2019-11-26 02:58:57,444 INFO L78 Accepts]: Start accepts. Automaton has 18194 states and 63560 transitions. Word has length 40 [2019-11-26 02:58:57,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:57,445 INFO L462 AbstractCegarLoop]: Abstraction has 18194 states and 63560 transitions. [2019-11-26 02:58:57,445 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:58:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 18194 states and 63560 transitions. [2019-11-26 02:58:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:58:57,451 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:57,451 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:57,653 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:57,653 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:57,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:57,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1766789163, now seen corresponding path program 1 times [2019-11-26 02:58:57,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:57,654 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367918418] [2019-11-26 02:58:57,656 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:57,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:57,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367918418] [2019-11-26 02:58:57,779 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309220529] [2019-11-26 02:58:57,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:57,838 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:58:57,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:58:57,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:58:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:57,964 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:58:58,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:58:58,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:58:58,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [9] total 18 [2019-11-26 02:58:58,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302706751] [2019-11-26 02:58:58,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:58:58,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:58,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:58:58,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:58:58,027 INFO L87 Difference]: Start difference. First operand 18194 states and 63560 transitions. Second operand 14 states. [2019-11-26 02:58:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:58,688 INFO L93 Difference]: Finished difference Result 28109 states and 96879 transitions. [2019-11-26 02:58:58,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-11-26 02:58:58,688 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 40 [2019-11-26 02:58:58,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:58,731 INFO L225 Difference]: With dead ends: 28109 [2019-11-26 02:58:58,731 INFO L226 Difference]: Without dead ends: 22577 [2019-11-26 02:58:58,732 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 362 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=917, Unknown=0, NotChecked=0, Total=1260 [2019-11-26 02:58:58,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22577 states. [2019-11-26 02:58:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22577 to 13763. [2019-11-26 02:58:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13763 states. [2019-11-26 02:58:59,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13763 states to 13763 states and 47862 transitions. [2019-11-26 02:58:59,108 INFO L78 Accepts]: Start accepts. Automaton has 13763 states and 47862 transitions. Word has length 40 [2019-11-26 02:58:59,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:59,108 INFO L462 AbstractCegarLoop]: Abstraction has 13763 states and 47862 transitions. [2019-11-26 02:58:59,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:58:59,108 INFO L276 IsEmpty]: Start isEmpty. Operand 13763 states and 47862 transitions. [2019-11-26 02:58:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-11-26 02:58:59,111 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:59,111 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:59,314 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:59,314 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:59,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:59,314 INFO L82 PathProgramCache]: Analyzing trace with hash -323210293, now seen corresponding path program 1 times [2019-11-26 02:58:59,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:59,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642234620] [2019-11-26 02:58:59,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-26 02:58:59,401 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642234620] [2019-11-26 02:58:59,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:58:59,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:58:59,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133176390] [2019-11-26 02:58:59,402 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:58:59,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:58:59,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:58:59,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:58:59,403 INFO L87 Difference]: Start difference. First operand 13763 states and 47862 transitions. Second operand 7 states. [2019-11-26 02:58:59,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:58:59,605 INFO L93 Difference]: Finished difference Result 16194 states and 54604 transitions. [2019-11-26 02:58:59,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:58:59,606 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-11-26 02:58:59,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:58:59,628 INFO L225 Difference]: With dead ends: 16194 [2019-11-26 02:58:59,628 INFO L226 Difference]: Without dead ends: 13581 [2019-11-26 02:58:59,628 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:58:59,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13581 states. [2019-11-26 02:58:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13581 to 12099. [2019-11-26 02:58:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12099 states. [2019-11-26 02:58:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 40554 transitions. [2019-11-26 02:58:59,855 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 40554 transitions. Word has length 40 [2019-11-26 02:58:59,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:58:59,856 INFO L462 AbstractCegarLoop]: Abstraction has 12099 states and 40554 transitions. [2019-11-26 02:58:59,856 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:58:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 40554 transitions. [2019-11-26 02:58:59,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-26 02:58:59,865 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:58:59,865 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:58:59,865 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:58:59,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:58:59,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1086574749, now seen corresponding path program 1 times [2019-11-26 02:58:59,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:58:59,866 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145102289] [2019-11-26 02:58:59,866 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:58:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:58:59,943 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145102289] [2019-11-26 02:58:59,944 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337918290] [2019-11-26 02:58:59,944 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:58:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:58:59,991 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:58:59,993 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:00,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:00,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:00,249 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-26 02:59:00,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-26 02:59:00,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 16 [2019-11-26 02:59:00,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190746513] [2019-11-26 02:59:00,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:59:00,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:00,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:59:00,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:59:00,280 INFO L87 Difference]: Start difference. First operand 12099 states and 40554 transitions. Second operand 7 states. [2019-11-26 02:59:00,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:00,560 INFO L93 Difference]: Finished difference Result 20211 states and 66749 transitions. [2019-11-26 02:59:00,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-26 02:59:00,561 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2019-11-26 02:59:00,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:00,595 INFO L225 Difference]: With dead ends: 20211 [2019-11-26 02:59:00,595 INFO L226 Difference]: Without dead ends: 17457 [2019-11-26 02:59:00,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 82 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2019-11-26 02:59:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17457 states. [2019-11-26 02:59:00,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17457 to 13557. [2019-11-26 02:59:00,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13557 states. [2019-11-26 02:59:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13557 states to 13557 states and 44850 transitions. [2019-11-26 02:59:00,880 INFO L78 Accepts]: Start accepts. Automaton has 13557 states and 44850 transitions. Word has length 47 [2019-11-26 02:59:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:00,881 INFO L462 AbstractCegarLoop]: Abstraction has 13557 states and 44850 transitions. [2019-11-26 02:59:00,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:59:00,881 INFO L276 IsEmpty]: Start isEmpty. Operand 13557 states and 44850 transitions. [2019-11-26 02:59:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-26 02:59:00,893 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:00,893 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:01,100 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:01,101 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:01,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:01,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1735429199, now seen corresponding path program 2 times [2019-11-26 02:59:01,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:01,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803917827] [2019-11-26 02:59:01,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:01,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803917827] [2019-11-26 02:59:01,210 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723786454] [2019-11-26 02:59:01,210 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:01,262 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-26 02:59:01,262 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:59:01,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:59:01,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:01,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:01,345 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:01,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:01,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:59:01,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 8] imperfect sequences [9] total 18 [2019-11-26 02:59:01,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852161853] [2019-11-26 02:59:01,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:59:01,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:01,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:59:01,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:59:01,389 INFO L87 Difference]: Start difference. First operand 13557 states and 44850 transitions. Second operand 14 states. [2019-11-26 02:59:01,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:01,781 INFO L93 Difference]: Finished difference Result 14610 states and 47343 transitions. [2019-11-26 02:59:01,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-26 02:59:01,790 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2019-11-26 02:59:01,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:01,800 INFO L225 Difference]: With dead ends: 14610 [2019-11-26 02:59:01,800 INFO L226 Difference]: Without dead ends: 7431 [2019-11-26 02:59:01,801 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 82 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=306, Invalid=816, Unknown=0, NotChecked=0, Total=1122 [2019-11-26 02:59:01,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7431 states. [2019-11-26 02:59:01,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7431 to 7197. [2019-11-26 02:59:01,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7197 states. [2019-11-26 02:59:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7197 states to 7197 states and 23061 transitions. [2019-11-26 02:59:01,920 INFO L78 Accepts]: Start accepts. Automaton has 7197 states and 23061 transitions. Word has length 47 [2019-11-26 02:59:01,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:01,920 INFO L462 AbstractCegarLoop]: Abstraction has 7197 states and 23061 transitions. [2019-11-26 02:59:01,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:59:01,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7197 states and 23061 transitions. [2019-11-26 02:59:01,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-26 02:59:01,931 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:01,931 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:02,137 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:02,138 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:02,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:02,138 INFO L82 PathProgramCache]: Analyzing trace with hash 485583435, now seen corresponding path program 1 times [2019-11-26 02:59:02,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:02,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885898895] [2019-11-26 02:59:02,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:02,271 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:02,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885898895] [2019-11-26 02:59:02,271 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376595127] [2019-11-26 02:59:02,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:02,336 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-26 02:59:02,343 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:02,425 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:02,464 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:02,464 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:02,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:59:02,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [11] total 22 [2019-11-26 02:59:02,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147621966] [2019-11-26 02:59:02,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-26 02:59:02,528 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:02,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-26 02:59:02,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:59:02,528 INFO L87 Difference]: Start difference. First operand 7197 states and 23061 transitions. Second operand 17 states. [2019-11-26 02:59:02,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:02,826 INFO L93 Difference]: Finished difference Result 6963 states and 22299 transitions. [2019-11-26 02:59:02,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-26 02:59:02,826 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2019-11-26 02:59:02,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:02,833 INFO L225 Difference]: With dead ends: 6963 [2019-11-26 02:59:02,833 INFO L226 Difference]: Without dead ends: 5559 [2019-11-26 02:59:02,834 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-11-26 02:59:02,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5559 states. [2019-11-26 02:59:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5559 to 5559. [2019-11-26 02:59:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5559 states. [2019-11-26 02:59:02,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 17662 transitions. [2019-11-26 02:59:02,905 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 17662 transitions. Word has length 54 [2019-11-26 02:59:02,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:02,905 INFO L462 AbstractCegarLoop]: Abstraction has 5559 states and 17662 transitions. [2019-11-26 02:59:02,906 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-26 02:59:02,906 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 17662 transitions. [2019-11-26 02:59:02,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-26 02:59:02,913 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:02,913 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:03,114 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:03,114 INFO L410 AbstractCegarLoop]: === Iteration 10 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:03,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1440095975, now seen corresponding path program 1 times [2019-11-26 02:59:03,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:03,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982129848] [2019-11-26 02:59:03,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:03,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982129848] [2019-11-26 02:59:03,236 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701912815] [2019-11-26 02:59:03,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:03,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-26 02:59:03,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:03,360 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:03,381 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:03,441 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:59:03,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [11] total 22 [2019-11-26 02:59:03,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808873178] [2019-11-26 02:59:03,442 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-26 02:59:03,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:03,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-26 02:59:03,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:59:03,442 INFO L87 Difference]: Start difference. First operand 5559 states and 17662 transitions. Second operand 17 states. [2019-11-26 02:59:03,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:03,699 INFO L93 Difference]: Finished difference Result 5325 states and 16900 transitions. [2019-11-26 02:59:03,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-26 02:59:03,699 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2019-11-26 02:59:03,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:03,703 INFO L225 Difference]: With dead ends: 5325 [2019-11-26 02:59:03,703 INFO L226 Difference]: Without dead ends: 3190 [2019-11-26 02:59:03,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=249, Invalid=743, Unknown=0, NotChecked=0, Total=992 [2019-11-26 02:59:03,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2019-11-26 02:59:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3190. [2019-11-26 02:59:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3190 states. [2019-11-26 02:59:03,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 10048 transitions. [2019-11-26 02:59:03,759 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 10048 transitions. Word has length 54 [2019-11-26 02:59:03,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:03,760 INFO L462 AbstractCegarLoop]: Abstraction has 3190 states and 10048 transitions. [2019-11-26 02:59:03,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-26 02:59:03,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 10048 transitions. [2019-11-26 02:59:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-11-26 02:59:03,766 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:59:03,766 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:59:03,969 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:03,969 INFO L410 AbstractCegarLoop]: === Iteration 11 === [thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION, thrErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:59:03,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:59:03,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1606539045, now seen corresponding path program 1 times [2019-11-26 02:59:03,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:59:03,970 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379328241] [2019-11-26 02:59:03,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:59:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:04,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379328241] [2019-11-26 02:59:04,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237928181] [2019-11-26 02:59:04,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:59:04,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-26 02:59:04,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:59:04,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:59:04,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:04,313 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:59:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:59:04,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-26 02:59:04,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 9] imperfect sequences [11] total 22 [2019-11-26 02:59:04,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766865009] [2019-11-26 02:59:04,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-26 02:59:04,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:59:04,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-26 02:59:04,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2019-11-26 02:59:04,426 INFO L87 Difference]: Start difference. First operand 3190 states and 10048 transitions. Second operand 17 states. [2019-11-26 02:59:04,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:59:04,542 INFO L93 Difference]: Finished difference Result 2956 states and 9286 transitions. [2019-11-26 02:59:04,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-26 02:59:04,542 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2019-11-26 02:59:04,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:59:04,542 INFO L225 Difference]: With dead ends: 2956 [2019-11-26 02:59:04,542 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:59:04,543 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 92 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2019-11-26 02:59:04,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:59:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:59:04,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:59:04,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:59:04,543 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2019-11-26 02:59:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:59:04,543 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:59:04,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-26 02:59:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:59:04,543 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:59:04,744 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:59:04,746 INFO L304 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-26 02:59:04,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:59:04 BasicIcfg [2019-11-26 02:59:04,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:59:04,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:59:04,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:59:04,749 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:59:04,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:58:45" (3/4) ... [2019-11-26 02:59:04,752 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:59:04,759 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr [2019-11-26 02:59:04,762 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-26 02:59:04,762 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-26 02:59:04,762 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:59:04,794 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_17ffbbaa-1aa6-453c-a251-70fd1d898626/bin/utaipan/witness.graphml [2019-11-26 02:59:04,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:59:04,796 INFO L168 Benchmark]: Toolchain (without parser) took 20227.76 ms. Allocated memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: 1.2 GB). Free memory was 939.4 MB in the beginning and 1.9 GB in the end (delta: -932.7 MB). Peak memory consumption was 251.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,797 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:04,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,797 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,798 INFO L168 Benchmark]: Boogie Preprocessor took 22.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:59:04,798 INFO L168 Benchmark]: RCFGBuilder took 359.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,799 INFO L168 Benchmark]: TraceAbstraction took 19152.38 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -765.2 MB). Peak memory consumption was 252.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,799 INFO L168 Benchmark]: Witness Printer took 45.65 ms. Allocated memory is still 2.2 GB. Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:59:04,802 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 604.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 166.2 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -203.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 359.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 19152.38 ms. Allocated memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: 1.0 GB). Free memory was 1.1 GB in the beginning and 1.9 GB in the end (delta: -765.2 MB). Peak memory consumption was 252.4 MB. Max. memory is 11.5 GB. * Witness Printer took 45.65 ms. Allocated memory is still 2.2 GB. Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 676]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 77 locations, 4 error locations. Result: SAFE, OverallTime: 19.0s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 5.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1825 SDtfs, 5153 SDslu, 7943 SDs, 0 SdLazy, 1911 SolverSat, 540 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 937 GetRequests, 650 SyntacticMatches, 34 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24517occurred 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: 5.4s AutomataMinimizationTime, 11 MinimizatonAttempts, 55755 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 851 NumberOfCodeBlocks, 851 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1200 ConstructedInterpolants, 0 QuantifiedInterpolants, 274328 SizeOfPredicates, 32 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 27 InterpolantComputations, 17 PerfectInterpolantSequences, 172/238 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...