./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 631c2bf398d9f63da121ba13c03b6f1c8c0b6c48 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:40,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:40,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:40,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:40,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:40,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:40,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:40,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:40,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:40,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:40,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:40,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:40,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:40,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:40,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:40,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:40,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:40,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:40,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:40,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:40,335 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:40,336 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:40,337 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:40,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:40,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:40,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:40,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:40,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:40,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:40,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:40,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:40,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:40,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:40,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:40,344 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:40,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:40,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:40,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:40,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:40,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:40,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:40,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:40,358 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:40,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:40,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:40,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:40,361 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:40,361 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:40,361 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:40,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:40,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:40,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:40,362 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:40,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:40,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:40,363 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:40,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:40,363 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:40,363 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:40,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:40,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:40,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:40,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:40,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:40,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:40,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:40,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:40,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:40,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:40,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:40,366 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer 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 -> Automizer 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 -> 631c2bf398d9f63da121ba13c03b6f1c8c0b6c48 [2019-10-22 08:55:40,404 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:40,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:40,421 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:40,422 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:40,422 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:40,423 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2019-10-22 08:55:40,468 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/data/c43623727/1c91de14181647c682d6103e9cc53855/FLAGb4555a023 [2019-10-22 08:55:40,890 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:40,891 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/sv-benchmarks/c/pthread-wmm/safe027_pso.oepc.i [2019-10-22 08:55:40,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/data/c43623727/1c91de14181647c682d6103e9cc53855/FLAGb4555a023 [2019-10-22 08:55:41,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/data/c43623727/1c91de14181647c682d6103e9cc53855 [2019-10-22 08:55:41,252 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:41,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:41,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:41,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:41,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:41,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f126efb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41, skipping insertion in model container [2019-10-22 08:55:41,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,268 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:41,316 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:41,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:41,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:41,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:41,844 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:41,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41 WrapperNode [2019-10-22 08:55:41,845 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:41,846 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:41,846 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:41,846 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:41,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,894 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:41,894 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:41,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:41,895 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:41,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,907 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,915 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... [2019-10-22 08:55:41,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:41,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:41,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:41,920 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:41,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:55:42,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:55:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:55:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:55:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:55:42,007 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:55:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:55:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 08:55:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 08:55:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:55:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:42,010 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:55:42,485 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:42,485 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:55:42,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:42 BoogieIcfgContainer [2019-10-22 08:55:42,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:42,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:42,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:42,491 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:42,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:41" (1/3) ... [2019-10-22 08:55:42,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d333963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:42, skipping insertion in model container [2019-10-22 08:55:42,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:41" (2/3) ... [2019-10-22 08:55:42,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d333963 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:42, skipping insertion in model container [2019-10-22 08:55:42,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:42" (3/3) ... [2019-10-22 08:55:42,494 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.oepc.i [2019-10-22 08:55:42,536 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,536 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,536 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,536 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,537 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,538 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,539 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,540 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,540 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,541 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,542 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,543 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,543 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,543 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:42,555 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:55:42,555 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:42,563 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:42,573 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:42,590 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:42,590 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:42,590 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:42,591 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:42,591 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:42,591 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:42,591 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:42,591 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:42,599 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 68 places, 64 transitions [2019-10-22 08:55:43,714 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13136 states. [2019-10-22 08:55:43,716 INFO L276 IsEmpty]: Start isEmpty. Operand 13136 states. [2019-10-22 08:55:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:55:43,753 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:43,754 INFO L380 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] [2019-10-22 08:55:43,756 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:43,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:43,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1293881623, now seen corresponding path program 1 times [2019-10-22 08:55:43,771 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:43,771 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946650442] [2019-10-22 08:55:43,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:43,771 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:43,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:44,081 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946650442] [2019-10-22 08:55:44,082 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:44,082 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:44,082 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132963113] [2019-10-22 08:55:44,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:44,087 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:44,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:44,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:44,103 INFO L87 Difference]: Start difference. First operand 13136 states. Second operand 4 states. [2019-10-22 08:55:44,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:44,343 INFO L93 Difference]: Finished difference Result 13742 states and 55793 transitions. [2019-10-22 08:55:44,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:44,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-10-22 08:55:44,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:44,415 INFO L225 Difference]: With dead ends: 13742 [2019-10-22 08:55:44,415 INFO L226 Difference]: Without dead ends: 5629 [2019-10-22 08:55:44,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5629 states. [2019-10-22 08:55:44,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5629 to 5629. [2019-10-22 08:55:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5629 states. [2019-10-22 08:55:44,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5629 states to 5629 states and 22352 transitions. [2019-10-22 08:55:44,737 INFO L78 Accepts]: Start accepts. Automaton has 5629 states and 22352 transitions. Word has length 35 [2019-10-22 08:55:44,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:44,738 INFO L462 AbstractCegarLoop]: Abstraction has 5629 states and 22352 transitions. [2019-10-22 08:55:44,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:44,739 INFO L276 IsEmpty]: Start isEmpty. Operand 5629 states and 22352 transitions. [2019-10-22 08:55:44,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:55:44,745 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:44,745 INFO L380 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] [2019-10-22 08:55:44,745 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:44,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:44,746 INFO L82 PathProgramCache]: Analyzing trace with hash -882813431, now seen corresponding path program 1 times [2019-10-22 08:55:44,746 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:44,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282326064] [2019-10-22 08:55:44,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:44,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:44,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:44,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:44,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282326064] [2019-10-22 08:55:44,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:44,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:44,879 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334022678] [2019-10-22 08:55:44,881 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:44,881 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:44,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:44,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:44,882 INFO L87 Difference]: Start difference. First operand 5629 states and 22352 transitions. Second operand 5 states. [2019-10-22 08:55:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:45,041 INFO L93 Difference]: Finished difference Result 6141 states and 23832 transitions. [2019-10-22 08:55:45,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:45,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-10-22 08:55:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:45,077 INFO L225 Difference]: With dead ends: 6141 [2019-10-22 08:55:45,078 INFO L226 Difference]: Without dead ends: 5517 [2019-10-22 08:55:45,078 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:45,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5517 states. [2019-10-22 08:55:45,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5517 to 5517. [2019-10-22 08:55:45,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5517 states. [2019-10-22 08:55:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5517 states to 5517 states and 21820 transitions. [2019-10-22 08:55:45,371 INFO L78 Accepts]: Start accepts. Automaton has 5517 states and 21820 transitions. Word has length 36 [2019-10-22 08:55:45,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:45,372 INFO L462 AbstractCegarLoop]: Abstraction has 5517 states and 21820 transitions. [2019-10-22 08:55:45,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:45,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5517 states and 21820 transitions. [2019-10-22 08:55:45,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:55:45,379 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:45,379 INFO L380 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] [2019-10-22 08:55:45,379 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:45,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:45,379 INFO L82 PathProgramCache]: Analyzing trace with hash -912070317, now seen corresponding path program 1 times [2019-10-22 08:55:45,380 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:45,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267436476] [2019-10-22 08:55:45,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:45,384 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:45,384 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:45,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267436476] [2019-10-22 08:55:45,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:45,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:45,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65446378] [2019-10-22 08:55:45,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:45,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:45,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:45,540 INFO L87 Difference]: Start difference. First operand 5517 states and 21820 transitions. Second operand 6 states. [2019-10-22 08:55:45,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:45,686 INFO L93 Difference]: Finished difference Result 5453 states and 20828 transitions. [2019-10-22 08:55:45,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:45,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-10-22 08:55:45,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:45,717 INFO L225 Difference]: With dead ends: 5453 [2019-10-22 08:55:45,717 INFO L226 Difference]: Without dead ends: 4845 [2019-10-22 08:55:45,717 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:55:45,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4845 states. [2019-10-22 08:55:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4845 to 4845. [2019-10-22 08:55:45,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4845 states. [2019-10-22 08:55:45,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4845 states to 4845 states and 18796 transitions. [2019-10-22 08:55:45,900 INFO L78 Accepts]: Start accepts. Automaton has 4845 states and 18796 transitions. Word has length 37 [2019-10-22 08:55:45,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:45,900 INFO L462 AbstractCegarLoop]: Abstraction has 4845 states and 18796 transitions. [2019-10-22 08:55:45,900 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 4845 states and 18796 transitions. [2019-10-22 08:55:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:45,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:45,909 INFO L380 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] [2019-10-22 08:55:45,910 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:45,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:45,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1959602637, now seen corresponding path program 1 times [2019-10-22 08:55:45,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:45,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896887855] [2019-10-22 08:55:45,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:45,910 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:45,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:46,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:46,044 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896887855] [2019-10-22 08:55:46,044 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:46,044 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:46,044 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822513055] [2019-10-22 08:55:46,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:46,045 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:46,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:46,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:46,045 INFO L87 Difference]: Start difference. First operand 4845 states and 18796 transitions. Second operand 7 states. [2019-10-22 08:55:46,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:46,206 INFO L93 Difference]: Finished difference Result 3565 states and 13036 transitions. [2019-10-22 08:55:46,206 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:46,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 08:55:46,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:46,235 INFO L225 Difference]: With dead ends: 3565 [2019-10-22 08:55:46,235 INFO L226 Difference]: Without dead ends: 3053 [2019-10-22 08:55:46,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2019-10-22 08:55:46,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3053. [2019-10-22 08:55:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:55:46,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11180 transitions. [2019-10-22 08:55:46,331 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11180 transitions. Word has length 38 [2019-10-22 08:55:46,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:46,331 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11180 transitions. [2019-10-22 08:55:46,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:46,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11180 transitions. [2019-10-22 08:55:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:46,337 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:46,338 INFO L380 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] [2019-10-22 08:55:46,338 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:46,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:46,338 INFO L82 PathProgramCache]: Analyzing trace with hash -894059009, now seen corresponding path program 1 times [2019-10-22 08:55:46,338 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:46,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233473757] [2019-10-22 08:55:46,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:46,339 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:46,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:46,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:46,492 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233473757] [2019-10-22 08:55:46,492 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:46,493 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:46,493 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546694654] [2019-10-22 08:55:46,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:46,493 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:46,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:46,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:46,494 INFO L87 Difference]: Start difference. First operand 3053 states and 11180 transitions. Second operand 7 states. [2019-10-22 08:55:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:46,689 INFO L93 Difference]: Finished difference Result 5197 states and 19084 transitions. [2019-10-22 08:55:46,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:46,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:46,712 INFO L225 Difference]: With dead ends: 5197 [2019-10-22 08:55:46,712 INFO L226 Difference]: Without dead ends: 3197 [2019-10-22 08:55:46,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:46,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2019-10-22 08:55:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3053. [2019-10-22 08:55:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3053 states. [2019-10-22 08:55:46,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3053 states to 3053 states and 11144 transitions. [2019-10-22 08:55:46,847 INFO L78 Accepts]: Start accepts. Automaton has 3053 states and 11144 transitions. Word has length 39 [2019-10-22 08:55:46,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:46,848 INFO L462 AbstractCegarLoop]: Abstraction has 3053 states and 11144 transitions. [2019-10-22 08:55:46,848 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:46,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3053 states and 11144 transitions. [2019-10-22 08:55:46,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:46,852 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:46,852 INFO L380 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] [2019-10-22 08:55:46,852 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:46,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:46,853 INFO L82 PathProgramCache]: Analyzing trace with hash -45436537, now seen corresponding path program 2 times [2019-10-22 08:55:46,853 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:46,853 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535136983] [2019-10-22 08:55:46,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:46,853 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:46,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:46,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:46,973 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535136983] [2019-10-22 08:55:46,973 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:46,973 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:46,974 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002618062] [2019-10-22 08:55:46,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:46,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:46,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:46,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:46,974 INFO L87 Difference]: Start difference. First operand 3053 states and 11144 transitions. Second operand 8 states. [2019-10-22 08:55:47,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:47,093 INFO L93 Difference]: Finished difference Result 4733 states and 17488 transitions. [2019-10-22 08:55:47,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:47,096 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:55:47,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:47,106 INFO L225 Difference]: With dead ends: 4733 [2019-10-22 08:55:47,106 INFO L226 Difference]: Without dead ends: 2457 [2019-10-22 08:55:47,106 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2457 states. [2019-10-22 08:55:47,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2457 to 2457. [2019-10-22 08:55:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2457 states. [2019-10-22 08:55:47,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 9108 transitions. [2019-10-22 08:55:47,168 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 9108 transitions. Word has length 39 [2019-10-22 08:55:47,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:47,169 INFO L462 AbstractCegarLoop]: Abstraction has 2457 states and 9108 transitions. [2019-10-22 08:55:47,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 9108 transitions. [2019-10-22 08:55:47,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:47,172 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:47,172 INFO L380 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] [2019-10-22 08:55:47,173 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:47,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:47,173 INFO L82 PathProgramCache]: Analyzing trace with hash -845562247, now seen corresponding path program 3 times [2019-10-22 08:55:47,173 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:47,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810628077] [2019-10-22 08:55:47,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:47,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:47,302 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810628077] [2019-10-22 08:55:47,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:47,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:47,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153632268] [2019-10-22 08:55:47,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:47,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:47,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:47,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:47,303 INFO L87 Difference]: Start difference. First operand 2457 states and 9108 transitions. Second operand 8 states. [2019-10-22 08:55:47,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:47,423 INFO L93 Difference]: Finished difference Result 4137 states and 15404 transitions. [2019-10-22 08:55:47,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:47,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-10-22 08:55:47,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:47,433 INFO L225 Difference]: With dead ends: 4137 [2019-10-22 08:55:47,434 INFO L226 Difference]: Without dead ends: 2357 [2019-10-22 08:55:47,434 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2019-10-22 08:55:47,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 2357. [2019-10-22 08:55:47,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2357 states. [2019-10-22 08:55:47,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 8780 transitions. [2019-10-22 08:55:47,488 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 8780 transitions. Word has length 39 [2019-10-22 08:55:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:47,489 INFO L462 AbstractCegarLoop]: Abstraction has 2357 states and 8780 transitions. [2019-10-22 08:55:47,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:47,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 8780 transitions. [2019-10-22 08:55:47,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:47,491 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:47,491 INFO L380 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] [2019-10-22 08:55:47,492 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:47,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:47,492 INFO L82 PathProgramCache]: Analyzing trace with hash -308069391, now seen corresponding path program 4 times [2019-10-22 08:55:47,492 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:47,493 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908486026] [2019-10-22 08:55:47,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,493 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:47,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:47,588 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908486026] [2019-10-22 08:55:47,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:47,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:47,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487379676] [2019-10-22 08:55:47,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:47,589 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:47,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:47,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:47,589 INFO L87 Difference]: Start difference. First operand 2357 states and 8780 transitions. Second operand 7 states. [2019-10-22 08:55:47,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:47,716 INFO L93 Difference]: Finished difference Result 3957 states and 14876 transitions. [2019-10-22 08:55:47,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:47,716 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:47,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:47,724 INFO L225 Difference]: With dead ends: 3957 [2019-10-22 08:55:47,724 INFO L226 Difference]: Without dead ends: 2277 [2019-10-22 08:55:47,725 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:47,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2019-10-22 08:55:47,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2213. [2019-10-22 08:55:47,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2213 states. [2019-10-22 08:55:47,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2213 states to 2213 states and 8336 transitions. [2019-10-22 08:55:47,775 INFO L78 Accepts]: Start accepts. Automaton has 2213 states and 8336 transitions. Word has length 39 [2019-10-22 08:55:47,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:47,776 INFO L462 AbstractCegarLoop]: Abstraction has 2213 states and 8336 transitions. [2019-10-22 08:55:47,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:47,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2213 states and 8336 transitions. [2019-10-22 08:55:47,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:55:47,778 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:47,778 INFO L380 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] [2019-10-22 08:55:47,778 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:47,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:47,779 INFO L82 PathProgramCache]: Analyzing trace with hash -2043714867, now seen corresponding path program 5 times [2019-10-22 08:55:47,779 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:47,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570686106] [2019-10-22 08:55:47,779 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,779 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:47,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:47,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:47,878 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570686106] [2019-10-22 08:55:47,878 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:47,878 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:47,878 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818850861] [2019-10-22 08:55:47,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:47,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:47,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:47,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:47,879 INFO L87 Difference]: Start difference. First operand 2213 states and 8336 transitions. Second operand 7 states. [2019-10-22 08:55:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:47,990 INFO L93 Difference]: Finished difference Result 1701 states and 6288 transitions. [2019-10-22 08:55:47,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:47,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-10-22 08:55:47,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:47,991 INFO L225 Difference]: With dead ends: 1701 [2019-10-22 08:55:47,991 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:47,991 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:47,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:47,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:47,992 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 08:55:47,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:47,992 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:47,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:47,992 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:47,992 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:47,995 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:55:47,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:47 BasicIcfg [2019-10-22 08:55:47,997 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:47,997 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:47,997 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:47,997 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:47,998 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:42" (3/4) ... [2019-10-22 08:55:48,002 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:48,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:55:48,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:55:48,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:55:48,010 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 08:55:48,014 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:55:48,014 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:48,059 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7e475653-0257-4bee-8f6c-d5e3012231e9/bin/uautomizer/witness.graphml [2019-10-22 08:55:48,059 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:48,061 INFO L168 Benchmark]: Toolchain (without parser) took 6807.07 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 232.3 MB). Free memory was 944.7 MB in the beginning and 844.4 MB in the end (delta: 100.3 MB). Peak memory consumption was 332.5 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,061 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:48,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:48,062 INFO L168 Benchmark]: Boogie Preprocessor took 25.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,063 INFO L168 Benchmark]: RCFGBuilder took 566.75 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,063 INFO L168 Benchmark]: TraceAbstraction took 5509.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 89.1 MB). Free memory was 1.1 GB in the beginning and 846.7 MB in the end (delta: 229.6 MB). Peak memory consumption was 318.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,063 INFO L168 Benchmark]: Witness Printer took 62.09 ms. Allocated memory is still 1.3 GB. Free memory was 846.7 MB in the beginning and 844.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:48,065 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 590.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -164.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 48.48 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 25.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 566.75 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5509.38 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 89.1 MB). Free memory was 1.1 GB in the beginning and 846.7 MB in the end (delta: 229.6 MB). Peak memory consumption was 318.7 MB. Max. memory is 11.5 GB. * Witness Printer took 62.09 ms. Allocated memory is still 1.3 GB. Free memory was 846.7 MB in the beginning and 844.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 88 locations, 1 error locations. Result: SAFE, OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 657 SDtfs, 1055 SDslu, 1895 SDs, 0 SdLazy, 236 SolverSat, 92 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13136occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 208 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 341 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 332 ConstructedInterpolants, 0 QuantifiedInterpolants, 45142 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...