./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/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 0a986b08dd7a1d9de684ac66adc6b4db3c2e0701 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 08:38:29,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 08:38:29,897 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 08:38:29,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 08:38:29,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 08:38:29,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 08:38:29,904 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 08:38:29,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 08:38:29,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 08:38:29,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 08:38:29,907 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 08:38:29,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 08:38:29,907 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 08:38:29,908 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 08:38:29,908 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 08:38:29,909 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 08:38:29,909 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 08:38:29,910 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 08:38:29,911 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 08:38:29,912 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 08:38:29,913 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 08:38:29,913 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 08:38:29,915 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 08:38:29,915 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 08:38:29,915 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 08:38:29,915 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 08:38:29,916 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 08:38:29,916 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 08:38:29,917 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 08:38:29,917 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 08:38:29,918 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 08:38:29,918 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 08:38:29,918 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 08:38:29,918 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 08:38:29,919 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 08:38:29,920 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 08:38:29,920 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 08:38:29,927 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 08:38:29,927 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 08:38:29,928 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 08:38:29,928 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 08:38:29,928 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 08:38:29,928 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 08:38:29,929 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 08:38:29,930 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 08:38:29,930 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 08:38:29,930 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 08:38:29,930 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 08:38:29,930 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 08:38:29,930 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 08:38:29,931 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 08:38:29,931 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 08:38:29,932 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 08:38:29,932 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 08:38:29,933 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 08:38:29,933 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 08:38:29,933 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 08:38:29,933 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/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 -> 0a986b08dd7a1d9de684ac66adc6b4db3c2e0701 [2018-11-23 08:38:29,956 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 08:38:29,965 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 08:38:29,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 08:38:29,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 08:38:29,970 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 08:38:29,970 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/../../sv-benchmarks/c/pthread-wmm/thin002_tso.oepc_true-unreach-call.i [2018-11-23 08:38:30,015 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/data/aa553cf4e/761d79ec564d405da3cf0eaec29c10ea/FLAGd2c9bda29 [2018-11-23 08:38:30,365 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 08:38:30,365 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/sv-benchmarks/c/pthread-wmm/thin002_tso.oepc_true-unreach-call.i [2018-11-23 08:38:30,376 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/data/aa553cf4e/761d79ec564d405da3cf0eaec29c10ea/FLAGd2c9bda29 [2018-11-23 08:38:30,385 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/data/aa553cf4e/761d79ec564d405da3cf0eaec29c10ea [2018-11-23 08:38:30,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 08:38:30,387 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 08:38:30,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 08:38:30,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 08:38:30,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 08:38:30,391 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2958a05b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30, skipping insertion in model container [2018-11-23 08:38:30,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 08:38:30,431 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 08:38:30,645 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:38:30,652 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 08:38:30,728 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 08:38:30,777 INFO L195 MainTranslator]: Completed translation [2018-11-23 08:38:30,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30 WrapperNode [2018-11-23 08:38:30,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 08:38:30,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 08:38:30,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 08:38:30,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 08:38:30,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,794 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 08:38:30,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 08:38:30,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 08:38:30,808 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 08:38:30,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,816 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... [2018-11-23 08:38:30,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 08:38:30,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 08:38:30,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 08:38:30,823 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 08:38:30,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/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 [2018-11-23 08:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 08:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 08:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2018-11-23 08:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 08:38:30,860 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2018-11-23 08:38:30,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2018-11-23 08:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2018-11-23 08:38:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2018-11-23 08:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2018-11-23 08:38:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2018-11-23 08:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2018-11-23 08:38:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2018-11-23 08:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2018-11-23 08:38:30,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 08:38:30,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 08:38:30,862 WARN L198 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2018-11-23 08:38:31,091 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 08:38:31,092 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 08:38:31,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:31 BoogieIcfgContainer [2018-11-23 08:38:31,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 08:38:31,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 08:38:31,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 08:38:31,095 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 08:38:31,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:38:30" (1/3) ... [2018-11-23 08:38:31,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c456ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:31, skipping insertion in model container [2018-11-23 08:38:31,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:38:30" (2/3) ... [2018-11-23 08:38:31,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c456ccb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:38:31, skipping insertion in model container [2018-11-23 08:38:31,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:31" (3/3) ... [2018-11-23 08:38:31,097 INFO L112 eAbstractionObserver]: Analyzing ICFG thin002_tso.oepc_true-unreach-call.i [2018-11-23 08:38:31,120 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,120 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,120 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,120 WARN L317 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,121 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,122 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,123 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,124 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,124 WARN L317 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 08:38:31,155 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 08:38:31,155 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 08:38:31,161 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 08:38:31,172 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 08:38:31,190 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 08:38:31,190 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 08:38:31,191 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 08:38:31,191 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 08:38:31,191 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 08:38:31,191 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 08:38:31,191 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 08:38:31,191 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 08:38:31,199 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70places, 66 transitions [2018-11-23 08:38:31,919 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13138 states. [2018-11-23 08:38:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 13138 states. [2018-11-23 08:38:31,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-23 08:38:31,942 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:31,943 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:31,945 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:31,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:31,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1445141644, now seen corresponding path program 1 times [2018-11-23 08:38:31,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:32,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:32,000 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:32,000 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:32,000 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:32,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:32,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 08:38:32,178 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:32,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 08:38:32,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 08:38:32,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-23 08:38:32,196 INFO L87 Difference]: Start difference. First operand 13138 states. Second operand 4 states. [2018-11-23 08:38:32,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:32,378 INFO L93 Difference]: Finished difference Result 13744 states and 55795 transitions. [2018-11-23 08:38:32,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 08:38:32,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2018-11-23 08:38:32,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:32,424 INFO L225 Difference]: With dead ends: 13744 [2018-11-23 08:38:32,425 INFO L226 Difference]: Without dead ends: 5631 [2018-11-23 08:38:32,426 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-23 08:38:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2018-11-23 08:38:32,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5631. [2018-11-23 08:38:32,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5631 states. [2018-11-23 08:38:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 22354 transitions. [2018-11-23 08:38:32,631 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 22354 transitions. Word has length 37 [2018-11-23 08:38:32,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:32,632 INFO L480 AbstractCegarLoop]: Abstraction has 5631 states and 22354 transitions. [2018-11-23 08:38:32,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 08:38:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 22354 transitions. [2018-11-23 08:38:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-23 08:38:32,638 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:32,638 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:32,638 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:32,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:32,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1883999228, now seen corresponding path program 1 times [2018-11-23 08:38:32,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:32,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:32,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:32,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:32,644 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:32,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:32,727 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:32,727 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-23 08:38:32,727 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:32,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-23 08:38:32,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 08:38:32,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-23 08:38:32,729 INFO L87 Difference]: Start difference. First operand 5631 states and 22354 transitions. Second operand 5 states. [2018-11-23 08:38:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:32,906 INFO L93 Difference]: Finished difference Result 6143 states and 23834 transitions. [2018-11-23 08:38:32,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-23 08:38:32,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2018-11-23 08:38:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:32,935 INFO L225 Difference]: With dead ends: 6143 [2018-11-23 08:38:32,936 INFO L226 Difference]: Without dead ends: 5519 [2018-11-23 08:38:32,936 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-23 08:38:32,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2018-11-23 08:38:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2018-11-23 08:38:33,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2018-11-23 08:38:33,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 21822 transitions. [2018-11-23 08:38:33,155 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 21822 transitions. Word has length 38 [2018-11-23 08:38:33,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:33,155 INFO L480 AbstractCegarLoop]: Abstraction has 5519 states and 21822 transitions. [2018-11-23 08:38:33,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-23 08:38:33,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 21822 transitions. [2018-11-23 08:38:33,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 08:38:33,160 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:33,160 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:33,160 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:33,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:33,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1586589234, now seen corresponding path program 1 times [2018-11-23 08:38:33,160 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:33,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,163 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:33,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:33,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-23 08:38:33,231 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:33,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-23 08:38:33,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-23 08:38:33,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-23 08:38:33,232 INFO L87 Difference]: Start difference. First operand 5519 states and 21822 transitions. Second operand 6 states. [2018-11-23 08:38:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:33,312 INFO L93 Difference]: Finished difference Result 5455 states and 20830 transitions. [2018-11-23 08:38:33,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 08:38:33,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-11-23 08:38:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:33,333 INFO L225 Difference]: With dead ends: 5455 [2018-11-23 08:38:33,333 INFO L226 Difference]: Without dead ends: 4847 [2018-11-23 08:38:33,333 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-11-23 08:38:33,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2018-11-23 08:38:33,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4847. [2018-11-23 08:38:33,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2018-11-23 08:38:33,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 18798 transitions. [2018-11-23 08:38:33,414 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 18798 transitions. Word has length 39 [2018-11-23 08:38:33,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:33,415 INFO L480 AbstractCegarLoop]: Abstraction has 4847 states and 18798 transitions. [2018-11-23 08:38:33,415 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-23 08:38:33,415 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 18798 transitions. [2018-11-23 08:38:33,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-23 08:38:33,418 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:33,419 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:33,419 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:33,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:33,419 INFO L82 PathProgramCache]: Analyzing trace with hash 2117960818, now seen corresponding path program 1 times [2018-11-23 08:38:33,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:33,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:33,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,421 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:33,484 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:33,484 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 08:38:33,484 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:33,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 08:38:33,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 08:38:33,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-23 08:38:33,485 INFO L87 Difference]: Start difference. First operand 4847 states and 18798 transitions. Second operand 7 states. [2018-11-23 08:38:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:33,561 INFO L93 Difference]: Finished difference Result 3567 states and 13038 transitions. [2018-11-23 08:38:33,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 08:38:33,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2018-11-23 08:38:33,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:33,571 INFO L225 Difference]: With dead ends: 3567 [2018-11-23 08:38:33,571 INFO L226 Difference]: Without dead ends: 3055 [2018-11-23 08:38:33,571 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2018-11-23 08:38:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2018-11-23 08:38:33,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3055. [2018-11-23 08:38:33,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2018-11-23 08:38:33,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 11182 transitions. [2018-11-23 08:38:33,637 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 11182 transitions. Word has length 40 [2018-11-23 08:38:33,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:33,637 INFO L480 AbstractCegarLoop]: Abstraction has 3055 states and 11182 transitions. [2018-11-23 08:38:33,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 08:38:33,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 11182 transitions. [2018-11-23 08:38:33,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 08:38:33,642 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:33,642 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:33,642 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:33,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:33,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2066804268, now seen corresponding path program 1 times [2018-11-23 08:38:33,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:33,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,644 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:33,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:33,644 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:33,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:33,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-23 08:38:33,835 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:33,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 08:38:33,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 08:38:33,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-11-23 08:38:33,836 INFO L87 Difference]: Start difference. First operand 3055 states and 11182 transitions. Second operand 12 states. [2018-11-23 08:38:34,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:34,044 INFO L93 Difference]: Finished difference Result 5279 states and 19302 transitions. [2018-11-23 08:38:34,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 08:38:34,045 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2018-11-23 08:38:34,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:34,054 INFO L225 Difference]: With dead ends: 5279 [2018-11-23 08:38:34,055 INFO L226 Difference]: Without dead ends: 3003 [2018-11-23 08:38:34,055 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-23 08:38:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3003 states. [2018-11-23 08:38:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3003 to 3003. [2018-11-23 08:38:34,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3003 states. [2018-11-23 08:38:34,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3003 states to 3003 states and 11022 transitions. [2018-11-23 08:38:34,122 INFO L78 Accepts]: Start accepts. Automaton has 3003 states and 11022 transitions. Word has length 41 [2018-11-23 08:38:34,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:34,122 INFO L480 AbstractCegarLoop]: Abstraction has 3003 states and 11022 transitions. [2018-11-23 08:38:34,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 08:38:34,122 INFO L276 IsEmpty]: Start isEmpty. Operand 3003 states and 11022 transitions. [2018-11-23 08:38:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 08:38:34,126 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:34,126 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:34,126 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:34,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:34,126 INFO L82 PathProgramCache]: Analyzing trace with hash -994845904, now seen corresponding path program 2 times [2018-11-23 08:38:34,127 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:34,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,128 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:34,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,129 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:34,203 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:34,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 08:38:34,203 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:34,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 08:38:34,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 08:38:34,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 08:38:34,204 INFO L87 Difference]: Start difference. First operand 3003 states and 11022 transitions. Second operand 7 states. [2018-11-23 08:38:34,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:34,297 INFO L93 Difference]: Finished difference Result 4923 states and 18158 transitions. [2018-11-23 08:38:34,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 08:38:34,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-11-23 08:38:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:34,306 INFO L225 Difference]: With dead ends: 4923 [2018-11-23 08:38:34,306 INFO L226 Difference]: Without dead ends: 2663 [2018-11-23 08:38:34,306 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-23 08:38:34,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2663 states. [2018-11-23 08:38:34,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2663 to 2663. [2018-11-23 08:38:34,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2663 states. [2018-11-23 08:38:34,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2663 states to 2663 states and 9870 transitions. [2018-11-23 08:38:34,360 INFO L78 Accepts]: Start accepts. Automaton has 2663 states and 9870 transitions. Word has length 41 [2018-11-23 08:38:34,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:34,361 INFO L480 AbstractCegarLoop]: Abstraction has 2663 states and 9870 transitions. [2018-11-23 08:38:34,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 08:38:34,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2663 states and 9870 transitions. [2018-11-23 08:38:34,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 08:38:34,363 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:34,364 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:34,364 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:34,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:34,364 INFO L82 PathProgramCache]: Analyzing trace with hash 2040016274, now seen corresponding path program 3 times [2018-11-23 08:38:34,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:34,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,366 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:34,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,366 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:34,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:34,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 08:38:34,472 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:34,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-23 08:38:34,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 08:38:34,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-23 08:38:34,473 INFO L87 Difference]: Start difference. First operand 2663 states and 9870 transitions. Second operand 7 states. [2018-11-23 08:38:34,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:34,549 INFO L93 Difference]: Finished difference Result 4263 states and 15966 transitions. [2018-11-23 08:38:34,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 08:38:34,550 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2018-11-23 08:38:34,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:34,554 INFO L225 Difference]: With dead ends: 4263 [2018-11-23 08:38:34,554 INFO L226 Difference]: Without dead ends: 2263 [2018-11-23 08:38:34,555 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-23 08:38:34,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2018-11-23 08:38:34,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2018-11-23 08:38:34,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2018-11-23 08:38:34,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 8530 transitions. [2018-11-23 08:38:34,585 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 8530 transitions. Word has length 41 [2018-11-23 08:38:34,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:34,585 INFO L480 AbstractCegarLoop]: Abstraction has 2263 states and 8530 transitions. [2018-11-23 08:38:34,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-23 08:38:34,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 8530 transitions. [2018-11-23 08:38:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 08:38:34,587 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:34,587 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:34,587 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:34,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:34,587 INFO L82 PathProgramCache]: Analyzing trace with hash -390113582, now seen corresponding path program 4 times [2018-11-23 08:38:34,587 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,589 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 08:38:34,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,589 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:34,707 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:34,707 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-23 08:38:34,707 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:34,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-23 08:38:34,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-23 08:38:34,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-11-23 08:38:34,708 INFO L87 Difference]: Start difference. First operand 2263 states and 8530 transitions. Second operand 12 states. [2018-11-23 08:38:34,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:34,811 INFO L93 Difference]: Finished difference Result 3879 states and 14666 transitions. [2018-11-23 08:38:34,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-23 08:38:34,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2018-11-23 08:38:34,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:34,814 INFO L225 Difference]: With dead ends: 3879 [2018-11-23 08:38:34,815 INFO L226 Difference]: Without dead ends: 2243 [2018-11-23 08:38:34,815 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-11-23 08:38:34,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2243 states. [2018-11-23 08:38:34,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2243 to 2243. [2018-11-23 08:38:34,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2243 states. [2018-11-23 08:38:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2243 states to 2243 states and 8490 transitions. [2018-11-23 08:38:34,859 INFO L78 Accepts]: Start accepts. Automaton has 2243 states and 8490 transitions. Word has length 41 [2018-11-23 08:38:34,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:34,859 INFO L480 AbstractCegarLoop]: Abstraction has 2243 states and 8490 transitions. [2018-11-23 08:38:34,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-23 08:38:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2243 states and 8490 transitions. [2018-11-23 08:38:34,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-23 08:38:34,861 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 08:38:34,861 INFO L402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 08:38:34,861 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 08:38:34,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 08:38:34,862 INFO L82 PathProgramCache]: Analyzing trace with hash -663323788, now seen corresponding path program 5 times [2018-11-23 08:38:34,862 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 08:38:34,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 08:38:34,864 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 08:38:34,864 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 08:38:34,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 08:38:34,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 08:38:34,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 08:38:34,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-23 08:38:34,939 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 08:38:34,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-23 08:38:34,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 08:38:34,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-23 08:38:34,939 INFO L87 Difference]: Start difference. First operand 2243 states and 8490 transitions. Second operand 8 states. [2018-11-23 08:38:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 08:38:35,051 INFO L93 Difference]: Finished difference Result 1731 states and 6442 transitions. [2018-11-23 08:38:35,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-23 08:38:35,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2018-11-23 08:38:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 08:38:35,051 INFO L225 Difference]: With dead ends: 1731 [2018-11-23 08:38:35,051 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 08:38:35,051 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2018-11-23 08:38:35,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 08:38:35,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 08:38:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 08:38:35,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 08:38:35,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2018-11-23 08:38:35,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 08:38:35,052 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 08:38:35,052 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-23 08:38:35,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 08:38:35,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 08:38:35,054 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 08:38:35,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 08:38:35 BasicIcfg [2018-11-23 08:38:35,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 08:38:35,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 08:38:35,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 08:38:35,055 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 08:38:35,055 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:38:31" (3/4) ... [2018-11-23 08:38:35,058 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 08:38:35,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2018-11-23 08:38:35,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2018-11-23 08:38:35,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2018-11-23 08:38:35,064 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2018-11-23 08:38:35,068 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2018-11-23 08:38:35,068 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 08:38:35,098 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e78a67d2-2235-482e-afac-f441825719c9/bin-2019/utaipan/witness.graphml [2018-11-23 08:38:35,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 08:38:35,099 INFO L168 Benchmark]: Toolchain (without parser) took 4711.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.0 MB). Free memory was 955.5 MB in the beginning and 865.3 MB in the end (delta: 90.2 MB). Peak memory consumption was 296.2 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:35,100 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 08:38:35,100 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:35,100 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.43 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. [2018-11-23 08:38:35,100 INFO L168 Benchmark]: Boogie Preprocessor took 15.10 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. [2018-11-23 08:38:35,101 INFO L168 Benchmark]: RCFGBuilder took 269.14 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:35,101 INFO L168 Benchmark]: TraceAbstraction took 3961.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 872.0 MB in the end (delta: 210.6 MB). Peak memory consumption was 279.3 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:35,101 INFO L168 Benchmark]: Witness Printer took 43.46 ms. Allocated memory is still 1.2 GB. Free memory was 872.0 MB in the beginning and 865.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-23 08:38:35,103 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 389.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.43 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. * Boogie Preprocessor took 15.10 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. * RCFGBuilder took 269.14 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3961.95 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 872.0 MB in the end (delta: 210.6 MB). Peak memory consumption was 279.3 MB. Max. memory is 11.5 GB. * Witness Printer took 43.46 ms. Allocated memory is still 1.2 GB. Free memory was 872.0 MB in the beginning and 865.3 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 90 locations, 1 error locations. SAFE Result, 3.8s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 1.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 712 SDtfs, 1190 SDslu, 3013 SDs, 0 SdLazy, 409 SolverSat, 101 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13138occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 350 ConstructedInterpolants, 0 QuantifiedInterpolants, 50310 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...