./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport_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_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/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 66ad1ff9e8f4055d6bc44dc751cea83862f50a74 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:55:27,798 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 01:55:27,799 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 01:55:27,805 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 01:55:27,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 01:55:27,806 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 01:55:27,806 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 01:55:27,807 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 01:55:27,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 01:55:27,808 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 01:55:27,809 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 01:55:27,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 01:55:27,810 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 01:55:27,810 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 01:55:27,811 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 01:55:27,812 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 01:55:27,812 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 01:55:27,813 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 01:55:27,815 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 01:55:27,816 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 01:55:27,816 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 01:55:27,817 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 01:55:27,819 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 01:55:27,819 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 01:55:27,819 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 01:55:27,820 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 01:55:27,820 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 01:55:27,820 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 01:55:27,821 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 01:55:27,821 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 01:55:27,821 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 01:55:27,822 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 01:55:27,822 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 01:55:27,822 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 01:55:27,823 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 01:55:27,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 01:55:27,823 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 01:55:27,831 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 01:55:27,831 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 01:55:27,831 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 01:55:27,832 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 01:55:27,832 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 01:55:27,833 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 01:55:27,833 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 01:55:27,833 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 01:55:27,833 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 01:55:27,833 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 01:55:27,834 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 01:55:27,835 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 01:55:27,835 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 01:55:27,835 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 01:55:27,835 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 01:55:27,835 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 01:55:27,835 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 01:55:27,835 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 01:55:27,836 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 01:55:27,836 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_bc709592-937c-49b7-99a6-3e732c4f693b/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 -> 66ad1ff9e8f4055d6bc44dc751cea83862f50a74 [2018-11-23 01:55:27,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 01:55:27,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 01:55:27,871 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 01:55:27,873 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 01:55:27,873 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 01:55:27,873 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/../../sv-benchmarks/c/pthread-atomic/lamport_true-unreach-call.i [2018-11-23 01:55:27,918 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/data/22285f617/0c98bf4c1e1a47d28312e96f1eb1afc0/FLAG0d51a4359 [2018-11-23 01:55:28,400 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 01:55:28,400 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/sv-benchmarks/c/pthread-atomic/lamport_true-unreach-call.i [2018-11-23 01:55:28,407 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/data/22285f617/0c98bf4c1e1a47d28312e96f1eb1afc0/FLAG0d51a4359 [2018-11-23 01:55:28,900 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/data/22285f617/0c98bf4c1e1a47d28312e96f1eb1afc0 [2018-11-23 01:55:28,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 01:55:28,903 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 01:55:28,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 01:55:28,903 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 01:55:28,906 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 01:55:28,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:28" (1/1) ... [2018-11-23 01:55:28,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dde488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:28, skipping insertion in model container [2018-11-23 01:55:28,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:55:28" (1/1) ... [2018-11-23 01:55:28,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 01:55:28,947 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 01:55:29,155 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:55:29,162 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 01:55:29,249 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 01:55:29,278 INFO L195 MainTranslator]: Completed translation [2018-11-23 01:55:29,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29 WrapperNode [2018-11-23 01:55:29,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 01:55:29,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 01:55:29,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 01:55:29,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 01:55:29,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,307 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 01:55:29,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 01:55:29,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 01:55:29,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 01:55:29,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... [2018-11-23 01:55:29,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 01:55:29,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 01:55:29,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 01:55:29,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 01:55:29,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/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 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2018-11-23 01:55:29,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2018-11-23 01:55:29,361 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-23 01:55:29,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 01:55:29,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 01:55:29,362 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 01:55:29,588 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 01:55:29,588 INFO L280 CfgBuilder]: Removed 12 assue(true) statements. [2018-11-23 01:55:29,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:29 BoogieIcfgContainer [2018-11-23 01:55:29,589 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 01:55:29,589 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 01:55:29,589 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 01:55:29,592 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 01:55:29,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:55:28" (1/3) ... [2018-11-23 01:55:29,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d29fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:29, skipping insertion in model container [2018-11-23 01:55:29,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:55:29" (2/3) ... [2018-11-23 01:55:29,593 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68d29fc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:55:29, skipping insertion in model container [2018-11-23 01:55:29,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:29" (3/3) ... [2018-11-23 01:55:29,594 INFO L112 eAbstractionObserver]: Analyzing ICFG lamport_true-unreach-call.i [2018-11-23 01:55:29,614 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,614 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,614 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,614 WARN L317 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,615 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,615 WARN L317 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,616 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,616 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,616 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,616 WARN L317 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,617 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,617 WARN L317 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-11-23 01:55:29,624 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2018-11-23 01:55:29,624 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 01:55:29,630 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-23 01:55:29,640 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-23 01:55:29,656 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 01:55:29,656 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 01:55:29,656 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 01:55:29,656 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 01:55:29,657 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 01:55:29,657 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 01:55:29,657 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 01:55:29,657 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 01:55:29,664 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77places, 100 transitions [2018-11-23 01:55:29,717 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1816 states. [2018-11-23 01:55:29,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states. [2018-11-23 01:55:29,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-23 01:55:29,725 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:29,725 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 01:55:29,727 INFO L423 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:29,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:29,730 INFO L82 PathProgramCache]: Analyzing trace with hash -772610409, now seen corresponding path program 1 times [2018-11-23 01:55:29,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:29,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:29,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:29,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:29,769 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:29,829 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 01:55:29,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:29,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 01:55:29,831 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:29,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-23 01:55:29,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-23 01:55:29,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-23 01:55:29,848 INFO L87 Difference]: Start difference. First operand 1816 states. Second operand 2 states. [2018-11-23 01:55:29,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:29,882 INFO L93 Difference]: Finished difference Result 1816 states and 5404 transitions. [2018-11-23 01:55:29,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 01:55:29,883 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-11-23 01:55:29,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:29,905 INFO L225 Difference]: With dead ends: 1816 [2018-11-23 01:55:29,906 INFO L226 Difference]: Without dead ends: 1702 [2018-11-23 01:55:29,907 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 01:55:29,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2018-11-23 01:55:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2018-11-23 01:55:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2018-11-23 01:55:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 5134 transitions. [2018-11-23 01:55:30,005 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 5134 transitions. Word has length 18 [2018-11-23 01:55:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,006 INFO L480 AbstractCegarLoop]: Abstraction has 1702 states and 5134 transitions. [2018-11-23 01:55:30,006 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-23 01:55:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 5134 transitions. [2018-11-23 01:55:30,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-23 01:55:30,008 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,008 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] [2018-11-23 01:55:30,008 INFO L423 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1584356875, now seen corresponding path program 1 times [2018-11-23 01:55:30,009 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,013 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,060 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 01:55:30,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,061 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,061 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,063 INFO L87 Difference]: Start difference. First operand 1702 states and 5134 transitions. Second operand 3 states. [2018-11-23 01:55:30,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,106 INFO L93 Difference]: Finished difference Result 1687 states and 5003 transitions. [2018-11-23 01:55:30,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,107 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-11-23 01:55:30,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,111 INFO L225 Difference]: With dead ends: 1687 [2018-11-23 01:55:30,111 INFO L226 Difference]: Without dead ends: 1399 [2018-11-23 01:55:30,111 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 01:55:30,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2018-11-23 01:55:30,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1345. [2018-11-23 01:55:30,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2018-11-23 01:55:30,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4069 transitions. [2018-11-23 01:55:30,135 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4069 transitions. Word has length 24 [2018-11-23 01:55:30,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,136 INFO L480 AbstractCegarLoop]: Abstraction has 1345 states and 4069 transitions. [2018-11-23 01:55:30,136 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4069 transitions. [2018-11-23 01:55:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-23 01:55:30,138 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,138 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 01:55:30,139 INFO L423 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,139 INFO L82 PathProgramCache]: Analyzing trace with hash 443111029, now seen corresponding path program 1 times [2018-11-23 01:55:30,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,143 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,179 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 01:55:30,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,180 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,181 INFO L87 Difference]: Start difference. First operand 1345 states and 4069 transitions. Second operand 3 states. [2018-11-23 01:55:30,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,212 INFO L93 Difference]: Finished difference Result 1255 states and 3767 transitions. [2018-11-23 01:55:30,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-11-23 01:55:30,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,215 INFO L225 Difference]: With dead ends: 1255 [2018-11-23 01:55:30,215 INFO L226 Difference]: Without dead ends: 952 [2018-11-23 01:55:30,216 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 01:55:30,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2018-11-23 01:55:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2018-11-23 01:55:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-11-23 01:55:30,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2914 transitions. [2018-11-23 01:55:30,234 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2914 transitions. Word has length 27 [2018-11-23 01:55:30,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,235 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 2914 transitions. [2018-11-23 01:55:30,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,235 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2914 transitions. [2018-11-23 01:55:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 01:55:30,238 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,238 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] [2018-11-23 01:55:30,238 INFO L423 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,239 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1505967266, now seen corresponding path program 1 times [2018-11-23 01:55:30,239 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,243 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,292 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 01:55:30,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,293 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,294 INFO L87 Difference]: Start difference. First operand 952 states and 2914 transitions. Second operand 3 states. [2018-11-23 01:55:30,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,339 INFO L93 Difference]: Finished difference Result 1228 states and 3688 transitions. [2018-11-23 01:55:30,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-23 01:55:30,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,343 INFO L225 Difference]: With dead ends: 1228 [2018-11-23 01:55:30,343 INFO L226 Difference]: Without dead ends: 994 [2018-11-23 01:55:30,343 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 01:55:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2018-11-23 01:55:30,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 943. [2018-11-23 01:55:30,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-11-23 01:55:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2817 transitions. [2018-11-23 01:55:30,362 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2817 transitions. Word has length 36 [2018-11-23 01:55:30,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,363 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 2817 transitions. [2018-11-23 01:55:30,363 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2817 transitions. [2018-11-23 01:55:30,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 01:55:30,365 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,366 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] [2018-11-23 01:55:30,366 INFO L423 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash -1422434340, now seen corresponding path program 2 times [2018-11-23 01:55:30,366 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,410 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 01:55:30,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-23 01:55:30,410 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-23 01:55:30,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 01:55:30,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 01:55:30,411 INFO L87 Difference]: Start difference. First operand 943 states and 2817 transitions. Second operand 4 states. [2018-11-23 01:55:30,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,441 INFO L93 Difference]: Finished difference Result 1456 states and 4146 transitions. [2018-11-23 01:55:30,442 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-11-23 01:55:30,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,446 INFO L225 Difference]: With dead ends: 1456 [2018-11-23 01:55:30,446 INFO L226 Difference]: Without dead ends: 1456 [2018-11-23 01:55:30,447 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 01:55:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-11-23 01:55:30,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1051. [2018-11-23 01:55:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-23 01:55:30,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 3108 transitions. [2018-11-23 01:55:30,472 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 3108 transitions. Word has length 36 [2018-11-23 01:55:30,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,472 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 3108 transitions. [2018-11-23 01:55:30,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-23 01:55:30,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 3108 transitions. [2018-11-23 01:55:30,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 01:55:30,475 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,475 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] [2018-11-23 01:55:30,476 INFO L423 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash -163632108, now seen corresponding path program 3 times [2018-11-23 01:55:30,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:55:30,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,479 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,509 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 01:55:30,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,510 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,511 INFO L87 Difference]: Start difference. First operand 1051 states and 3108 transitions. Second operand 3 states. [2018-11-23 01:55:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,533 INFO L93 Difference]: Finished difference Result 1303 states and 3546 transitions. [2018-11-23 01:55:30,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-23 01:55:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,537 INFO L225 Difference]: With dead ends: 1303 [2018-11-23 01:55:30,537 INFO L226 Difference]: Without dead ends: 1294 [2018-11-23 01:55:30,538 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 01:55:30,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2018-11-23 01:55:30,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 973. [2018-11-23 01:55:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2018-11-23 01:55:30,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2744 transitions. [2018-11-23 01:55:30,558 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2744 transitions. Word has length 36 [2018-11-23 01:55:30,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,558 INFO L480 AbstractCegarLoop]: Abstraction has 973 states and 2744 transitions. [2018-11-23 01:55:30,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,559 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2744 transitions. [2018-11-23 01:55:30,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-23 01:55:30,560 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,560 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] [2018-11-23 01:55:30,560 INFO L423 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1616007366, now seen corresponding path program 4 times [2018-11-23 01:55:30,561 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,562 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 01:55:30,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,563 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,590 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 01:55:30,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,590 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,591 INFO L87 Difference]: Start difference. First operand 973 states and 2744 transitions. Second operand 3 states. [2018-11-23 01:55:30,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,633 INFO L93 Difference]: Finished difference Result 880 states and 2301 transitions. [2018-11-23 01:55:30,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-23 01:55:30,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,635 INFO L225 Difference]: With dead ends: 880 [2018-11-23 01:55:30,635 INFO L226 Difference]: Without dead ends: 655 [2018-11-23 01:55:30,636 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 01:55:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-11-23 01:55:30,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 568. [2018-11-23 01:55:30,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2018-11-23 01:55:30,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1424 transitions. [2018-11-23 01:55:30,645 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1424 transitions. Word has length 36 [2018-11-23 01:55:30,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,645 INFO L480 AbstractCegarLoop]: Abstraction has 568 states and 1424 transitions. [2018-11-23 01:55:30,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,646 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1424 transitions. [2018-11-23 01:55:30,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 01:55:30,647 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,647 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 01:55:30,647 INFO L423 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1142059985, now seen corresponding path program 1 times [2018-11-23 01:55:30,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,677 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 01:55:30,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,677 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,678 INFO L87 Difference]: Start difference. First operand 568 states and 1424 transitions. Second operand 3 states. [2018-11-23 01:55:30,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,704 INFO L93 Difference]: Finished difference Result 544 states and 1360 transitions. [2018-11-23 01:55:30,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-23 01:55:30,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,706 INFO L225 Difference]: With dead ends: 544 [2018-11-23 01:55:30,706 INFO L226 Difference]: Without dead ends: 469 [2018-11-23 01:55:30,706 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 01:55:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2018-11-23 01:55:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2018-11-23 01:55:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2018-11-23 01:55:30,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1171 transitions. [2018-11-23 01:55:30,713 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1171 transitions. Word has length 39 [2018-11-23 01:55:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,714 INFO L480 AbstractCegarLoop]: Abstraction has 469 states and 1171 transitions. [2018-11-23 01:55:30,714 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1171 transitions. [2018-11-23 01:55:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-23 01:55:30,715 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 01:55:30,715 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 01:55:30,715 INFO L423 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 01:55:30,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 01:55:30,716 INFO L82 PathProgramCache]: Analyzing trace with hash -547744875, now seen corresponding path program 1 times [2018-11-23 01:55:30,716 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 01:55:30,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 01:55:30,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 01:55:30,718 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 01:55:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 01:55:30,744 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 01:55:30,744 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 01:55:30,744 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 01:55:30,744 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-23 01:55:30,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-23 01:55:30,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-23 01:55:30,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-23 01:55:30,745 INFO L87 Difference]: Start difference. First operand 469 states and 1171 transitions. Second operand 3 states. [2018-11-23 01:55:30,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 01:55:30,750 INFO L93 Difference]: Finished difference Result 310 states and 825 transitions. [2018-11-23 01:55:30,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-23 01:55:30,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-23 01:55:30,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-23 01:55:30,751 INFO L225 Difference]: With dead ends: 310 [2018-11-23 01:55:30,751 INFO L226 Difference]: Without dead ends: 0 [2018-11-23 01:55:30,751 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 01:55:30,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-23 01:55:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-23 01:55:30,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-23 01:55:30,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 01:55:30,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-11-23 01:55:30,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-23 01:55:30,752 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 01:55:30,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-23 01:55:30,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-23 01:55:30,752 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-23 01:55:30,755 INFO L305 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2018-11-23 01:55:30,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:55:30 BasicIcfg [2018-11-23 01:55:30,756 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 01:55:30,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 01:55:30,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 01:55:30,757 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 01:55:30,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:55:29" (3/4) ... [2018-11-23 01:55:30,761 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-23 01:55:30,765 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2018-11-23 01:55:30,766 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2018-11-23 01:55:30,768 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2018-11-23 01:55:30,769 INFO L879 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-23 01:55:30,794 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_bc709592-937c-49b7-99a6-3e732c4f693b/bin-2019/utaipan/witness.graphml [2018-11-23 01:55:30,794 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 01:55:30,795 INFO L168 Benchmark]: Toolchain (without parser) took 1892.53 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -147.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:55:30,796 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:55:30,796 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. [2018-11-23 01:55:30,796 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.69 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:55:30,797 INFO L168 Benchmark]: Boogie Preprocessor took 19.26 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 01:55:30,797 INFO L168 Benchmark]: RCFGBuilder took 261.97 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. [2018-11-23 01:55:30,797 INFO L168 Benchmark]: TraceAbstraction took 1166.66 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: -17.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 01:55:30,798 INFO L168 Benchmark]: Witness Printer took 37.93 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 01:55:30,800 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 375.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 956.6 MB in the beginning and 1.1 GB in the end (delta: -161.0 MB). Peak memory consumption was 31.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 27.69 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.26 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 261.97 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: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1166.66 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: -17.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 37.93 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. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 685]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 659]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 685]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 659]: 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, 123 locations, 4 error locations. SAFE Result, 1.1s OverallTime, 9 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 795 SDtfs, 283 SDslu, 511 SDs, 0 SdLazy, 91 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1816occurred 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: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 918 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 12878 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...