./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/peterson_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_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/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 a9bea0c488d2f45d989ec349e22f0d31a29496ef ............................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:13:16,824 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:13:16,825 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:13:16,833 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:13:16,833 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:13:16,834 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:13:16,835 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:13:16,836 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:13:16,837 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:13:16,837 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:13:16,838 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:13:16,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:13:16,839 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:13:16,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:13:16,840 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:13:16,841 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:13:16,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:13:16,842 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:13:16,844 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:13:16,845 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:13:16,846 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:13:16,846 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:13:16,848 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:13:16,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:13:16,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:13:16,849 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:13:16,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:13:16,850 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:13:16,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:13:16,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:13:16,852 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:13:16,852 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:13:16,852 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:13:16,853 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:13:16,853 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:13:16,854 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:13:16,854 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 15:13:16,864 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:13:16,864 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:13:16,865 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 15:13:16,865 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 15:13:16,865 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 15:13:16,865 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 15:13:16,865 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 15:13:16,865 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 15:13:16,865 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 15:13:16,866 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 15:13:16,866 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 15:13:16,866 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 15:13:16,866 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 15:13:16,867 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 15:13:16,867 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 15:13:16,868 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:13:16,868 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 15:13:16,869 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 15:13:16,869 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 15:13:16,870 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 15:13:16,870 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 15:13:16,870 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_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/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 -> a9bea0c488d2f45d989ec349e22f0d31a29496ef [2018-11-23 15:13:16,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:13:16,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:13:16,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:13:16,902 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:13:16,902 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:13:16,903 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-11-23 15:13:16,943 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/data/de9a1be05/f0b98950a70e47728f5835c9f33b771f/FLAGf1598e160 [2018-11-23 15:13:17,374 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:13:17,374 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/sv-benchmarks/c/pthread-atomic/peterson_true-unreach-call.i [2018-11-23 15:13:17,382 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/data/de9a1be05/f0b98950a70e47728f5835c9f33b771f/FLAGf1598e160 [2018-11-23 15:13:17,390 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/data/de9a1be05/f0b98950a70e47728f5835c9f33b771f [2018-11-23 15:13:17,392 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:13:17,393 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:13:17,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:13:17,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:13:17,396 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:13:17,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29a78139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17, skipping insertion in model container [2018-11-23 15:13:17,399 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:13:17,432 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:13:17,632 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:13:17,639 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:13:17,711 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:13:17,742 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:13:17,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17 WrapperNode [2018-11-23 15:13:17,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:13:17,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:13:17,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:13:17,743 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:13:17,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,771 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:13:17,772 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:13:17,772 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:13:17,772 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:13:17,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... [2018-11-23 15:13:17,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:13:17,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:13:17,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:13:17,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:13:17,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/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 15:13:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 15:13:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 15:13:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-11-23 15:13:17,831 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-11-23 15:13:17,831 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-23 15:13:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-23 15:13:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 15:13:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 15:13:17,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:13:17,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:13:17,833 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 15:13:18,115 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:13:18,115 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-23 15:13:18,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:18 BoogieIcfgContainer [2018-11-23 15:13:18,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:13:18,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 15:13:18,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 15:13:18,118 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 15:13:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:13:17" (1/3) ... [2018-11-23 15:13:18,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89b239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:18, skipping insertion in model container [2018-11-23 15:13:18,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:13:17" (2/3) ... [2018-11-23 15:13:18,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b89b239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:13:18, skipping insertion in model container [2018-11-23 15:13:18,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:18" (3/3) ... [2018-11-23 15:13:18,121 INFO L112 eAbstractionObserver]: Analyzing ICFG peterson_true-unreach-call.i [2018-11-23 15:13:18,142 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,142 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,142 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,142 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,142 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,143 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,143 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,143 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,143 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,143 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,144 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,144 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 15:13:18,153 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 15:13:18,154 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 15:13:18,161 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 15:13:18,175 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 15:13:18,196 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 15:13:18,197 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 15:13:18,197 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 15:13:18,197 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:13:18,197 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:13:18,197 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 15:13:18,197 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:13:18,197 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 15:13:18,205 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 54places, 59 transitions [2018-11-23 15:13:18,233 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 561 states. [2018-11-23 15:13:18,235 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states. [2018-11-23 15:13:18,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 15:13:18,242 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:13:18,243 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:13:18,245 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:13:18,249 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:13:18,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1235087554, now seen corresponding path program 1 times [2018-11-23 15:13:18,251 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:13:18,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:13:18,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,299 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:13:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:13:18,354 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 15:13:18,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:13:18,356 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 15:13:18,356 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:13:18,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 15:13:18,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 15:13:18,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 15:13:18,373 INFO L87 Difference]: Start difference. First operand 561 states. Second operand 2 states. [2018-11-23 15:13:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:13:18,392 INFO L93 Difference]: Finished difference Result 561 states and 1390 transitions. [2018-11-23 15:13:18,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 15:13:18,393 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-11-23 15:13:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:13:18,407 INFO L225 Difference]: With dead ends: 561 [2018-11-23 15:13:18,407 INFO L226 Difference]: Without dead ends: 480 [2018-11-23 15:13:18,408 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 15:13:18,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2018-11-23 15:13:18,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480. [2018-11-23 15:13:18,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 480 states. [2018-11-23 15:13:18,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 1204 transitions. [2018-11-23 15:13:18,455 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 1204 transitions. Word has length 19 [2018-11-23 15:13:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:13:18,456 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 1204 transitions. [2018-11-23 15:13:18,456 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 15:13:18,456 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 1204 transitions. [2018-11-23 15:13:18,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-23 15:13:18,456 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:13:18,456 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:13:18,457 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:13:18,457 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:13:18,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1235117345, now seen corresponding path program 1 times [2018-11-23 15:13:18,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:13:18,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:13:18,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,461 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:13:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:13:18,501 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 15:13:18,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:13:18,502 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 15:13:18,502 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:13:18,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 15:13:18,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 15:13:18,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:13:18,503 INFO L87 Difference]: Start difference. First operand 480 states and 1204 transitions. Second operand 3 states. [2018-11-23 15:13:18,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:13:18,533 INFO L93 Difference]: Finished difference Result 513 states and 1237 transitions. [2018-11-23 15:13:18,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 15:13:18,534 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-11-23 15:13:18,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:13:18,536 INFO L225 Difference]: With dead ends: 513 [2018-11-23 15:13:18,536 INFO L226 Difference]: Without dead ends: 423 [2018-11-23 15:13:18,537 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:13:18,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2018-11-23 15:13:18,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 378. [2018-11-23 15:13:18,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2018-11-23 15:13:18,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 922 transitions. [2018-11-23 15:13:18,553 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 922 transitions. Word has length 19 [2018-11-23 15:13:18,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:13:18,553 INFO L480 AbstractCegarLoop]: Abstraction has 378 states and 922 transitions. [2018-11-23 15:13:18,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 15:13:18,553 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 922 transitions. [2018-11-23 15:13:18,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-23 15:13:18,554 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:13:18,554 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] [2018-11-23 15:13:18,555 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:13:18,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:13:18,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1862669806, now seen corresponding path program 1 times [2018-11-23 15:13:18,556 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:13:18,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,560 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:13:18,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,560 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:13:18,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:13:18,588 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 15:13:18,589 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:13:18,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 15:13:18,589 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:13:18,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 15:13:18,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 15:13:18,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:13:18,590 INFO L87 Difference]: Start difference. First operand 378 states and 922 transitions. Second operand 3 states. [2018-11-23 15:13:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:13:18,617 INFO L93 Difference]: Finished difference Result 345 states and 805 transitions. [2018-11-23 15:13:18,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 15:13:18,618 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-23 15:13:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:13:18,619 INFO L225 Difference]: With dead ends: 345 [2018-11-23 15:13:18,619 INFO L226 Difference]: Without dead ends: 243 [2018-11-23 15:13:18,619 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 15:13:18,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-11-23 15:13:18,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 243. [2018-11-23 15:13:18,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-11-23 15:13:18,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 556 transitions. [2018-11-23 15:13:18,626 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 556 transitions. Word has length 22 [2018-11-23 15:13:18,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:13:18,627 INFO L480 AbstractCegarLoop]: Abstraction has 243 states and 556 transitions. [2018-11-23 15:13:18,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 15:13:18,628 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 556 transitions. [2018-11-23 15:13:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 15:13:18,629 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:13:18,629 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] [2018-11-23 15:13:18,629 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:13:18,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:13:18,630 INFO L82 PathProgramCache]: Analyzing trace with hash 352522995, now seen corresponding path program 1 times [2018-11-23 15:13:18,630 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:13:18,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,635 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:13:18,635 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,635 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:13:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:13:18,674 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 15:13:18,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:13:18,675 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:13:18,675 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:13:18,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:13:18,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:13:18,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:13:18,675 INFO L87 Difference]: Start difference. First operand 243 states and 556 transitions. Second operand 4 states. [2018-11-23 15:13:18,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:13:18,699 INFO L93 Difference]: Finished difference Result 264 states and 607 transitions. [2018-11-23 15:13:18,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:13:18,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-23 15:13:18,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:13:18,701 INFO L225 Difference]: With dead ends: 264 [2018-11-23 15:13:18,701 INFO L226 Difference]: Without dead ends: 228 [2018-11-23 15:13:18,701 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:13:18,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2018-11-23 15:13:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2018-11-23 15:13:18,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2018-11-23 15:13:18,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 496 transitions. [2018-11-23 15:13:18,706 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 496 transitions. Word has length 27 [2018-11-23 15:13:18,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:13:18,707 INFO L480 AbstractCegarLoop]: Abstraction has 228 states and 496 transitions. [2018-11-23 15:13:18,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:13:18,707 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 496 transitions. [2018-11-23 15:13:18,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 15:13:18,708 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 15:13:18,708 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] [2018-11-23 15:13:18,708 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 15:13:18,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:13:18,709 INFO L82 PathProgramCache]: Analyzing trace with hash 2145141981, now seen corresponding path program 1 times [2018-11-23 15:13:18,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 15:13:18,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:13:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:13:18,712 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 15:13:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:13:18,764 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 15:13:18,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:13:18,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 15:13:18,764 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 15:13:18,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 15:13:18,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 15:13:18,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:13:18,765 INFO L87 Difference]: Start difference. First operand 228 states and 496 transitions. Second operand 4 states. [2018-11-23 15:13:18,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:13:18,783 INFO L93 Difference]: Finished difference Result 105 states and 234 transitions. [2018-11-23 15:13:18,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 15:13:18,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-23 15:13:18,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 15:13:18,783 INFO L225 Difference]: With dead ends: 105 [2018-11-23 15:13:18,783 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 15:13:18,784 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 15:13:18,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 15:13:18,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 15:13:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 15:13:18,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:13:18,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-23 15:13:18,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 15:13:18,784 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:13:18,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 15:13:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:13:18,784 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 15:13:18,786 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 15:13:18,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:13:18 BasicIcfg [2018-11-23 15:13:18,787 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 15:13:18,788 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:13:18,788 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:13:18,788 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:13:18,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:13:18" (3/4) ... [2018-11-23 15:13:18,791 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 15:13:18,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2018-11-23 15:13:18,795 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-11-23 15:13:18,798 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 15:13:18,798 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 15:13:18,824 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_10d3e422-1ae8-4956-bbc4-b5c3bbd5e933/bin-2019/utaipan/witness.graphml [2018-11-23 15:13:18,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:13:18,824 INFO L168 Benchmark]: Toolchain (without parser) took 1432.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 955.3 MB in the beginning and 1.0 GB in the end (delta: -64.0 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,826 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:13:18,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 955.3 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,826 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.15 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 15:13:18,827 INFO L168 Benchmark]: Boogie Preprocessor took 18.74 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,827 INFO L168 Benchmark]: RCFGBuilder took 325.08 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,828 INFO L168 Benchmark]: TraceAbstraction took 671.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,828 INFO L168 Benchmark]: Witness Printer took 36.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:13:18,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 349.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 955.3 MB in the beginning and 1.1 GB in the end (delta: -169.7 MB). Peak memory consumption was 34.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.15 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 18.74 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 325.08 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: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 671.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.1 MB). Peak memory consumption was 73.1 MB. Max. memory is 11.5 GB. * Witness Printer took 36.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 652]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 643]: 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, 78 locations, 4 error locations. SAFE Result, 0.5s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 261 SDtfs, 100 SDslu, 130 SDs, 0 SdLazy, 33 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=561occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 45 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 109 ConstructedInterpolants, 0 QuantifiedInterpolants, 3403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...