./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.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_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/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 d1f5cf796f11ff318e0727d39252d6f3e7340705 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 09:02:02,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:02:02,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:02:02,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:02:02,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:02:02,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:02:02,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:02:02,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:02:02,824 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:02:02,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:02:02,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:02:02,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:02:02,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:02:02,827 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:02:02,828 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:02:02,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:02:02,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:02:02,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:02:02,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:02:02,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:02:02,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:02:02,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:02:02,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:02:02,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:02:02,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:02:02,839 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:02:02,839 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:02:02,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:02:02,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:02:02,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:02:02,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:02:02,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:02:02,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:02:02,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:02:02,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:02:02,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:02:02,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:02:02,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:02:02,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:02:02,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:02:02,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:02:02,847 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 09:02:02,859 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:02:02,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:02:02,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:02:02,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:02:02,861 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:02:02,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:02:02,861 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 09:02:02,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:02:02,861 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 09:02:02,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:02:02,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 09:02:02,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 09:02:02,862 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 09:02:02,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:02:02,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 09:02:02,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 09:02:02,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 09:02:02,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:02:02,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 09:02:02,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 09:02:02,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:02:02,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 09:02:02,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 09:02:02,866 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_d9bcd1ed-27d1-4f95-b298-74aca82bb602/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 -> d1f5cf796f11ff318e0727d39252d6f3e7340705 [2019-10-22 09:02:02,890 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:02:02,901 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:02:02,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:02:02,906 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:02:02,911 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:02:02,911 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-10-22 09:02:02,956 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/data/e1dbae6fc/6decd5fe0dd647fbbf296aaf69253936/FLAG26483e819 [2019-10-22 09:02:03,375 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:02:03,376 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/sv-benchmarks/c/pthread-wmm/thin002_tso.opt.i [2019-10-22 09:02:03,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/data/e1dbae6fc/6decd5fe0dd647fbbf296aaf69253936/FLAG26483e819 [2019-10-22 09:02:03,399 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/data/e1dbae6fc/6decd5fe0dd647fbbf296aaf69253936 [2019-10-22 09:02:03,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:02:03,403 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:02:03,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:03,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:02:03,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:02:03,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ec8138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03, skipping insertion in model container [2019-10-22 09:02:03,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,417 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:02:03,450 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:02:03,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:03,804 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:02:03,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:02:03,911 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:02:03,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03 WrapperNode [2019-10-22 09:02:03,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:02:03,913 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:03,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:02:03,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:02:03,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:02:03,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:02:03,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:02:03,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:02:03,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... [2019-10-22 09:02:03,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:02:03,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:02:03,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:02:03,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:02:03,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/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 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 09:02:04,037 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 09:02:04,037 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 09:02:04,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 09:02:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 09:02:04,038 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 09:02:04,038 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 09:02:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 09:02:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 09:02:04,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:02:04,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:02:04,041 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 09:02:04,425 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:02:04,425 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:02:04,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:04 BoogieIcfgContainer [2019-10-22 09:02:04,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:02:04,427 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 09:02:04,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 09:02:04,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 09:02:04,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:02:03" (1/3) ... [2019-10-22 09:02:04,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5723df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:04, skipping insertion in model container [2019-10-22 09:02:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:02:03" (2/3) ... [2019-10-22 09:02:04,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5723df49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:02:04, skipping insertion in model container [2019-10-22 09:02:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:04" (3/3) ... [2019-10-22 09:02:04,435 INFO L109 eAbstractionObserver]: Analyzing ICFG thin002_tso.opt.i [2019-10-22 09:02:04,471 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,472 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,472 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,473 WARN L315 ript$VariableManager]: TermVariabe Thread0_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,473 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,473 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,474 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,474 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,474 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,474 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,475 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,475 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,475 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,475 WARN L315 ript$VariableManager]: TermVariabe Thread1_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,475 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,476 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe Thread2_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,477 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,479 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,479 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe Thread3_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,480 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,481 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,481 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,481 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,481 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,481 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 09:02:04,494 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 09:02:04,495 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 09:02:04,503 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 09:02:04,515 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 09:02:04,533 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 09:02:04,533 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 09:02:04,534 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 09:02:04,534 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:02:04,534 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:02:04,534 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 09:02:04,534 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:02:04,534 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 09:02:04,543 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 70 places, 66 transitions [2019-10-22 09:02:05,573 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13138 states. [2019-10-22 09:02:05,575 INFO L276 IsEmpty]: Start isEmpty. Operand 13138 states. [2019-10-22 09:02:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 09:02:05,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:05,600 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 09:02:05,602 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:05,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:05,607 INFO L82 PathProgramCache]: Analyzing trace with hash -1232982921, now seen corresponding path program 1 times [2019-10-22 09:02:05,615 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:05,615 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076021196] [2019-10-22 09:02:05,615 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:05,615 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:05,616 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:05,953 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 09:02:05,953 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076021196] [2019-10-22 09:02:05,954 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:05,954 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 09:02:05,954 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424818453] [2019-10-22 09:02:05,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 09:02:05,958 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:05,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 09:02:05,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 09:02:05,973 INFO L87 Difference]: Start difference. First operand 13138 states. Second operand 4 states. [2019-10-22 09:02:06,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:06,242 INFO L93 Difference]: Finished difference Result 13744 states and 55795 transitions. [2019-10-22 09:02:06,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 09:02:06,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-22 09:02:06,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:06,316 INFO L225 Difference]: With dead ends: 13744 [2019-10-22 09:02:06,319 INFO L226 Difference]: Without dead ends: 5631 [2019-10-22 09:02:06,321 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 09:02:06,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5631 states. [2019-10-22 09:02:06,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5631. [2019-10-22 09:02:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5631 states. [2019-10-22 09:02:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5631 states to 5631 states and 22354 transitions. [2019-10-22 09:02:06,629 INFO L78 Accepts]: Start accepts. Automaton has 5631 states and 22354 transitions. Word has length 37 [2019-10-22 09:02:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:06,630 INFO L462 AbstractCegarLoop]: Abstraction has 5631 states and 22354 transitions. [2019-10-22 09:02:06,631 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 09:02:06,631 INFO L276 IsEmpty]: Start isEmpty. Operand 5631 states and 22354 transitions. [2019-10-22 09:02:06,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 09:02:06,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:06,637 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 09:02:06,637 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:06,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:06,637 INFO L82 PathProgramCache]: Analyzing trace with hash -911838873, now seen corresponding path program 1 times [2019-10-22 09:02:06,637 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:06,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284380388] [2019-10-22 09:02:06,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:06,638 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:06,638 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:06,768 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 09:02:06,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284380388] [2019-10-22 09:02:06,769 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:06,769 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 09:02:06,769 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724447520] [2019-10-22 09:02:06,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 09:02:06,771 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:06,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 09:02:06,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 09:02:06,772 INFO L87 Difference]: Start difference. First operand 5631 states and 22354 transitions. Second operand 5 states. [2019-10-22 09:02:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:06,897 INFO L93 Difference]: Finished difference Result 6143 states and 23834 transitions. [2019-10-22 09:02:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 09:02:06,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-10-22 09:02:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:07,021 INFO L225 Difference]: With dead ends: 6143 [2019-10-22 09:02:07,021 INFO L226 Difference]: Without dead ends: 5519 [2019-10-22 09:02:07,022 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 09:02:07,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2019-10-22 09:02:07,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 5519. [2019-10-22 09:02:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5519 states. [2019-10-22 09:02:07,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5519 states to 5519 states and 21822 transitions. [2019-10-22 09:02:07,185 INFO L78 Accepts]: Start accepts. Automaton has 5519 states and 21822 transitions. Word has length 38 [2019-10-22 09:02:07,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:07,185 INFO L462 AbstractCegarLoop]: Abstraction has 5519 states and 21822 transitions. [2019-10-22 09:02:07,185 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 09:02:07,185 INFO L276 IsEmpty]: Start isEmpty. Operand 5519 states and 21822 transitions. [2019-10-22 09:02:07,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 09:02:07,192 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:07,192 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 09:02:07,192 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:07,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,192 INFO L82 PathProgramCache]: Analyzing trace with hash 32130101, now seen corresponding path program 1 times [2019-10-22 09:02:07,193 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138538886] [2019-10-22 09:02:07,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,193 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,193 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:07,316 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 09:02:07,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138538886] [2019-10-22 09:02:07,316 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:07,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 09:02:07,316 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824768820] [2019-10-22 09:02:07,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 09:02:07,317 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:07,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 09:02:07,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 09:02:07,317 INFO L87 Difference]: Start difference. First operand 5519 states and 21822 transitions. Second operand 6 states. [2019-10-22 09:02:07,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:07,451 INFO L93 Difference]: Finished difference Result 5455 states and 20830 transitions. [2019-10-22 09:02:07,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:07,452 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 09:02:07,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:07,485 INFO L225 Difference]: With dead ends: 5455 [2019-10-22 09:02:07,485 INFO L226 Difference]: Without dead ends: 4847 [2019-10-22 09:02:07,485 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 09:02:07,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4847 states. [2019-10-22 09:02:07,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4847 to 4847. [2019-10-22 09:02:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4847 states. [2019-10-22 09:02:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4847 states to 4847 states and 18798 transitions. [2019-10-22 09:02:07,623 INFO L78 Accepts]: Start accepts. Automaton has 4847 states and 18798 transitions. Word has length 39 [2019-10-22 09:02:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:07,624 INFO L462 AbstractCegarLoop]: Abstraction has 4847 states and 18798 transitions. [2019-10-22 09:02:07,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 09:02:07,624 INFO L276 IsEmpty]: Start isEmpty. Operand 4847 states and 18798 transitions. [2019-10-22 09:02:07,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 09:02:07,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:07,629 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, 1] [2019-10-22 09:02:07,630 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:07,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1518806347, now seen corresponding path program 1 times [2019-10-22 09:02:07,630 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,630 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978924724] [2019-10-22 09:02:07,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,631 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,631 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:07,725 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 09:02:07,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978924724] [2019-10-22 09:02:07,725 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:07,725 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:07,726 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136346725] [2019-10-22 09:02:07,726 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:07,726 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:07,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:07,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:07,727 INFO L87 Difference]: Start difference. First operand 4847 states and 18798 transitions. Second operand 7 states. [2019-10-22 09:02:07,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:07,883 INFO L93 Difference]: Finished difference Result 3567 states and 13038 transitions. [2019-10-22 09:02:07,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 09:02:07,884 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2019-10-22 09:02:07,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:07,900 INFO L225 Difference]: With dead ends: 3567 [2019-10-22 09:02:07,900 INFO L226 Difference]: Without dead ends: 3055 [2019-10-22 09:02:07,901 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 09:02:07,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3055 states. [2019-10-22 09:02:07,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3055 to 3055. [2019-10-22 09:02:07,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2019-10-22 09:02:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 11182 transitions. [2019-10-22 09:02:07,986 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 11182 transitions. Word has length 40 [2019-10-22 09:02:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:07,988 INFO L462 AbstractCegarLoop]: Abstraction has 3055 states and 11182 transitions. [2019-10-22 09:02:07,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:07,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 11182 transitions. [2019-10-22 09:02:07,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:02:07,993 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:07,993 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, 1, 1] [2019-10-22 09:02:07,993 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:07,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:07,993 INFO L82 PathProgramCache]: Analyzing trace with hash -590398305, now seen corresponding path program 1 times [2019-10-22 09:02:07,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:07,994 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46208403] [2019-10-22 09:02:07,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,994 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:07,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,136 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 09:02:08,137 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46208403] [2019-10-22 09:02:08,137 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,137 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 09:02:08,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322464838] [2019-10-22 09:02:08,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 09:02:08,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 09:02:08,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 09:02:08,139 INFO L87 Difference]: Start difference. First operand 3055 states and 11182 transitions. Second operand 8 states. [2019-10-22 09:02:08,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,267 INFO L93 Difference]: Finished difference Result 4735 states and 17542 transitions. [2019-10-22 09:02:08,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:08,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2019-10-22 09:02:08,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,284 INFO L225 Difference]: With dead ends: 4735 [2019-10-22 09:02:08,284 INFO L226 Difference]: Without dead ends: 2459 [2019-10-22 09:02:08,285 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 09:02:08,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2019-10-22 09:02:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2459. [2019-10-22 09:02:08,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2019-10-22 09:02:08,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 9126 transitions. [2019-10-22 09:02:08,407 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 9126 transitions. Word has length 41 [2019-10-22 09:02:08,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,408 INFO L462 AbstractCegarLoop]: Abstraction has 2459 states and 9126 transitions. [2019-10-22 09:02:08,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 09:02:08,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 9126 transitions. [2019-10-22 09:02:08,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:02:08,411 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,411 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, 1, 1] [2019-10-22 09:02:08,411 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,412 INFO L82 PathProgramCache]: Analyzing trace with hash 409184359, now seen corresponding path program 2 times [2019-10-22 09:02:08,412 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,412 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448957894] [2019-10-22 09:02:08,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,412 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,413 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,522 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 09:02:08,522 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448957894] [2019-10-22 09:02:08,522 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,523 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:08,523 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398696563] [2019-10-22 09:02:08,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:08,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:08,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:08,524 INFO L87 Difference]: Start difference. First operand 2459 states and 9126 transitions. Second operand 7 states. [2019-10-22 09:02:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,646 INFO L93 Difference]: Finished difference Result 4059 states and 15222 transitions. [2019-10-22 09:02:08,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:08,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:02:08,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,655 INFO L225 Difference]: With dead ends: 4059 [2019-10-22 09:02:08,655 INFO L226 Difference]: Without dead ends: 2263 [2019-10-22 09:02:08,655 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 09:02:08,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2019-10-22 09:02:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2263. [2019-10-22 09:02:08,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2263 states. [2019-10-22 09:02:08,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 8530 transitions. [2019-10-22 09:02:08,706 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 8530 transitions. Word has length 41 [2019-10-22 09:02:08,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,706 INFO L462 AbstractCegarLoop]: Abstraction has 2263 states and 8530 transitions. [2019-10-22 09:02:08,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:08,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 8530 transitions. [2019-10-22 09:02:08,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:02:08,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,709 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, 1, 1] [2019-10-22 09:02:08,709 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,709 INFO L82 PathProgramCache]: Analyzing trace with hash -604963235, now seen corresponding path program 3 times [2019-10-22 09:02:08,709 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373852739] [2019-10-22 09:02:08,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,710 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:08,785 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 09:02:08,786 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373852739] [2019-10-22 09:02:08,786 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:08,786 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:08,787 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200107375] [2019-10-22 09:02:08,787 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:08,787 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:08,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:08,787 INFO L87 Difference]: Start difference. First operand 2263 states and 8530 transitions. Second operand 7 states. [2019-10-22 09:02:08,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:08,874 INFO L93 Difference]: Finished difference Result 3799 states and 14418 transitions. [2019-10-22 09:02:08,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:08,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:02:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:08,882 INFO L225 Difference]: With dead ends: 3799 [2019-10-22 09:02:08,883 INFO L226 Difference]: Without dead ends: 2163 [2019-10-22 09:02:08,883 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-10-22 09:02:08,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2163 states. [2019-10-22 09:02:08,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2163 to 2163. [2019-10-22 09:02:08,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2163 states. [2019-10-22 09:02:08,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2163 states to 2163 states and 8222 transitions. [2019-10-22 09:02:08,931 INFO L78 Accepts]: Start accepts. Automaton has 2163 states and 8222 transitions. Word has length 41 [2019-10-22 09:02:08,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:08,932 INFO L462 AbstractCegarLoop]: Abstraction has 2163 states and 8222 transitions. [2019-10-22 09:02:08,932 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:08,932 INFO L276 IsEmpty]: Start isEmpty. Operand 2163 states and 8222 transitions. [2019-10-22 09:02:08,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 09:02:08,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 09:02:08,934 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, 1, 1] [2019-10-22 09:02:08,934 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 09:02:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:02:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1307472511, now seen corresponding path program 4 times [2019-10-22 09:02:08,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:02:08,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940751876] [2019-10-22 09:02:08,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:02:08,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:02:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 09:02:09,066 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 09:02:09,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940751876] [2019-10-22 09:02:09,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 09:02:09,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 09:02:09,067 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119500270] [2019-10-22 09:02:09,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 09:02:09,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 09:02:09,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 09:02:09,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 09:02:09,068 INFO L87 Difference]: Start difference. First operand 2163 states and 8222 transitions. Second operand 7 states. [2019-10-22 09:02:09,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 09:02:09,152 INFO L93 Difference]: Finished difference Result 1651 states and 6174 transitions. [2019-10-22 09:02:09,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 09:02:09,152 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2019-10-22 09:02:09,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 09:02:09,153 INFO L225 Difference]: With dead ends: 1651 [2019-10-22 09:02:09,153 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 09:02:09,153 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 09:02:09,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 09:02:09,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 09:02:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 09:02:09,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 09:02:09,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2019-10-22 09:02:09,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 09:02:09,154 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 09:02:09,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 09:02:09,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 09:02:09,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 09:02:09,157 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 09:02:09,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:02:09 BasicIcfg [2019-10-22 09:02:09,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 09:02:09,159 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:02:09,159 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:02:09,159 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:02:09,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:02:04" (3/4) ... [2019-10-22 09:02:09,162 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 09:02:09,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 09:02:09,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 09:02:09,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 09:02:09,168 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 09:02:09,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 09:02:09,172 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 09:02:09,207 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d9bcd1ed-27d1-4f95-b298-74aca82bb602/bin/uautomizer/witness.graphml [2019-10-22 09:02:09,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:02:09,209 INFO L168 Benchmark]: Toolchain (without parser) took 5805.60 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 227.5 MB). Free memory was 939.1 MB in the beginning and 949.8 MB in the end (delta: -10.7 MB). Peak memory consumption was 216.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:09,209 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:02:09,209 INFO L168 Benchmark]: CACSL2BoogieTranslator took 508.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:09,210 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.99 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. [2019-10-22 09:02:09,210 INFO L168 Benchmark]: Boogie Preprocessor took 25.37 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. [2019-10-22 09:02:09,210 INFO L168 Benchmark]: RCFGBuilder took 446.21 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:09,210 INFO L168 Benchmark]: TraceAbstraction took 4731.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 957.8 MB in the end (delta: 115.6 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:09,211 INFO L168 Benchmark]: Witness Printer took 48.20 ms. Allocated memory is still 1.3 GB. Free memory was 957.8 MB in the beginning and 949.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2019-10-22 09:02:09,213 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 508.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 939.1 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). Peak memory consumption was 22.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.99 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 25.37 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 446.21 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: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4731.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 86.0 MB). Free memory was 1.1 GB in the beginning and 957.8 MB in the end (delta: 115.6 MB). Peak memory consumption was 201.5 MB. Max. memory is 11.5 GB. * Witness Printer took 48.20 ms. Allocated memory is still 1.3 GB. Free memory was 957.8 MB in the beginning and 949.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 90 locations, 1 error locations. Result: SAFE, OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 542 SDtfs, 997 SDslu, 1430 SDs, 0 SdLazy, 170 SolverSat, 88 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13138occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 310 ConstructedInterpolants, 0 QuantifiedInterpolants, 36630 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...