./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/lamport.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_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/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 4f308056a588d49578d6b80408483bd72f47ef45 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 08:56:57,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:56:57,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:56:57,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:56:57,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:56:57,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:56:57,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:56:57,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:56:57,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:56:57,797 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:56:57,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:56:57,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:56:57,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:56:57,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:56:57,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:56:57,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:56:57,815 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:56:57,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:56:57,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:56:57,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:56:57,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:56:57,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:56:57,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:56:57,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:56:57,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:56:57,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:56:57,828 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:56:57,829 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:56:57,830 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:56:57,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:56:57,831 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:56:57,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:56:57,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:56:57,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:56:57,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:56:57,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:56:57,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:56:57,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:56:57,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:56:57,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:56:57,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:56:57,837 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:56:57,850 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:56:57,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:56:57,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:56:57,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:56:57,852 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:56:57,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:56:57,852 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:56:57,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:56:57,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:56:57,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:56:57,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:56:57,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:56:57,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:56:57,854 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:56:57,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:56:57,854 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:56:57,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:56:57,855 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:56:57,855 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:56:57,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:56:57,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:56:57,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:56:57,856 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:56:57,856 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:56:57,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:56:57,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:56:57,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:56:57,857 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:56:57,857 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_8daa7f85-0e85-4eee-bc52-056bf2a12da4/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 -> 4f308056a588d49578d6b80408483bd72f47ef45 [2019-10-22 08:56:57,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:56:57,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:56:57,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:56:57,914 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:56:57,915 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:56:57,916 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/../../sv-benchmarks/c/pthread-atomic/lamport.i [2019-10-22 08:56:57,978 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/data/97ba9de4e/9c55dd2500044b49bdff227d4db2a5ff/FLAG0c51f8724 [2019-10-22 08:56:58,409 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:56:58,410 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/sv-benchmarks/c/pthread-atomic/lamport.i [2019-10-22 08:56:58,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/data/97ba9de4e/9c55dd2500044b49bdff227d4db2a5ff/FLAG0c51f8724 [2019-10-22 08:56:58,733 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/data/97ba9de4e/9c55dd2500044b49bdff227d4db2a5ff [2019-10-22 08:56:58,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:56:58,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:56:58,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:58,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:56:58,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:56:58,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:58" (1/1) ... [2019-10-22 08:56:58,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cd4bdb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:58, skipping insertion in model container [2019-10-22 08:56:58,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:56:58" (1/1) ... [2019-10-22 08:56:58,750 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:56:58,797 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:56:59,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:59,280 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:56:59,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:56:59,396 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:56:59,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59 WrapperNode [2019-10-22 08:56:59,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:56:59,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:59,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:56:59,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:56:59,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,424 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:56:59,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:56:59,443 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:56:59,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:56:59,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... [2019-10-22 08:56:59,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:56:59,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:56:59,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:56:59,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:56:59,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/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 08:56:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:56:59,542 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-22 08:56:59,542 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-22 08:56:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 08:56:59,543 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 08:56:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:56:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:56:59,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:56:59,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:56:59,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:56:59,546 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 08:56:59,974 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:56:59,975 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 08:56:59,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:59 BoogieIcfgContainer [2019-10-22 08:56:59,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:56:59,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:56:59,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:56:59,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:56:59,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:56:58" (1/3) ... [2019-10-22 08:56:59,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:59, skipping insertion in model container [2019-10-22 08:56:59,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:56:59" (2/3) ... [2019-10-22 08:56:59,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4925ceb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:56:59, skipping insertion in model container [2019-10-22 08:56:59,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:59" (3/3) ... [2019-10-22 08:56:59,992 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2019-10-22 08:57:00,042 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,046 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,046 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,046 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,047 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,047 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,048 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,049 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,049 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,051 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,052 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,052 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:57:00,077 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:57:00,077 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:57:00,087 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 08:57:00,099 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 08:57:00,122 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:57:00,123 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:57:00,123 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:57:00,123 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:00,123 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:00,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:57:00,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:00,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:57:00,136 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 100 transitions [2019-10-22 08:57:00,276 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1816 states. [2019-10-22 08:57:00,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states. [2019-10-22 08:57:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:57:00,290 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:00,291 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:00,293 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash -759027401, now seen corresponding path program 1 times [2019-10-22 08:57:00,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:00,311 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609125693] [2019-10-22 08:57:00,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,311 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,312 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,486 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 08:57:00,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609125693] [2019-10-22 08:57:00,488 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:00,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:57:00,489 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788446078] [2019-10-22 08:57:00,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:57:00,494 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:00,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:57:00,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:00,513 INFO L87 Difference]: Start difference. First operand 1816 states. Second operand 2 states. [2019-10-22 08:57:00,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:00,608 INFO L93 Difference]: Finished difference Result 1816 states and 5404 transitions. [2019-10-22 08:57:00,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:00,611 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 08:57:00,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:00,654 INFO L225 Difference]: With dead ends: 1816 [2019-10-22 08:57:00,654 INFO L226 Difference]: Without dead ends: 1702 [2019-10-22 08:57:00,656 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:57:00,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-10-22 08:57:00,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2019-10-22 08:57:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-10-22 08:57:00,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 5134 transitions. [2019-10-22 08:57:00,827 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 5134 transitions. Word has length 18 [2019-10-22 08:57:00,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:00,827 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 5134 transitions. [2019-10-22 08:57:00,828 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:57:00,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 5134 transitions. [2019-10-22 08:57:00,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 08:57:00,830 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:00,830 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] [2019-10-22 08:57:00,831 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:00,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1289082709, now seen corresponding path program 1 times [2019-10-22 08:57:00,832 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:00,832 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591293472] [2019-10-22 08:57:00,832 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,832 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:00,832 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:00,921 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 08:57:00,921 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591293472] [2019-10-22 08:57:00,922 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:00,922 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:00,922 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644924025] [2019-10-22 08:57:00,923 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:00,924 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:00,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:00,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:00,924 INFO L87 Difference]: Start difference. First operand 1702 states and 5134 transitions. Second operand 3 states. [2019-10-22 08:57:01,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,006 INFO L93 Difference]: Finished difference Result 1687 states and 5003 transitions. [2019-10-22 08:57:01,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 08:57:01,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,019 INFO L225 Difference]: With dead ends: 1687 [2019-10-22 08:57:01,019 INFO L226 Difference]: Without dead ends: 1399 [2019-10-22 08:57:01,020 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-10-22 08:57:01,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1345. [2019-10-22 08:57:01,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2019-10-22 08:57:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4069 transitions. [2019-10-22 08:57:01,074 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4069 transitions. Word has length 24 [2019-10-22 08:57:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,076 INFO L462 AbstractCegarLoop]: Abstraction has 1345 states and 4069 transitions. [2019-10-22 08:57:01,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:01,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4069 transitions. [2019-10-22 08:57:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 08:57:01,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,079 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] [2019-10-22 08:57:01,080 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,080 INFO L82 PathProgramCache]: Analyzing trace with hash -734915409, now seen corresponding path program 1 times [2019-10-22 08:57:01,080 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309044744] [2019-10-22 08:57:01,081 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,179 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 08:57:01,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309044744] [2019-10-22 08:57:01,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:01,180 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349529034] [2019-10-22 08:57:01,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:01,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:01,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,185 INFO L87 Difference]: Start difference. First operand 1345 states and 4069 transitions. Second operand 3 states. [2019-10-22 08:57:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,227 INFO L93 Difference]: Finished difference Result 1255 states and 3767 transitions. [2019-10-22 08:57:01,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-22 08:57:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,234 INFO L225 Difference]: With dead ends: 1255 [2019-10-22 08:57:01,235 INFO L226 Difference]: Without dead ends: 952 [2019-10-22 08:57:01,235 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-10-22 08:57:01,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2019-10-22 08:57:01,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-22 08:57:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2914 transitions. [2019-10-22 08:57:01,268 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2914 transitions. Word has length 27 [2019-10-22 08:57:01,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,270 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 2914 transitions. [2019-10-22 08:57:01,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:01,271 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2914 transitions. [2019-10-22 08:57:01,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:57:01,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,278 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 08:57:01,278 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,279 INFO L82 PathProgramCache]: Analyzing trace with hash 585747710, now seen corresponding path program 1 times [2019-10-22 08:57:01,279 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,279 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021513313] [2019-10-22 08:57:01,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,280 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,359 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 08:57:01,359 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021513313] [2019-10-22 08:57:01,359 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,359 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:01,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670026303] [2019-10-22 08:57:01,360 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:01,360 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:01,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,363 INFO L87 Difference]: Start difference. First operand 952 states and 2914 transitions. Second operand 3 states. [2019-10-22 08:57:01,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,446 INFO L93 Difference]: Finished difference Result 1228 states and 3688 transitions. [2019-10-22 08:57:01,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,448 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:57:01,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,454 INFO L225 Difference]: With dead ends: 1228 [2019-10-22 08:57:01,454 INFO L226 Difference]: Without dead ends: 994 [2019-10-22 08:57:01,455 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-10-22 08:57:01,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 943. [2019-10-22 08:57:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-22 08:57:01,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2817 transitions. [2019-10-22 08:57:01,491 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2817 transitions. Word has length 36 [2019-10-22 08:57:01,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,492 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 2817 transitions. [2019-10-22 08:57:01,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:01,493 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2817 transitions. [2019-10-22 08:57:01,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:57:01,495 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,496 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 08:57:01,496 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1432217762, now seen corresponding path program 2 times [2019-10-22 08:57:01,497 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050623119] [2019-10-22 08:57:01,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,497 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,537 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 08:57:01,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050623119] [2019-10-22 08:57:01,537 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:57:01,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827966213] [2019-10-22 08:57:01,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:57:01,538 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:57:01,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:01,539 INFO L87 Difference]: Start difference. First operand 943 states and 2817 transitions. Second operand 4 states. [2019-10-22 08:57:01,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,584 INFO L93 Difference]: Finished difference Result 1456 states and 4146 transitions. [2019-10-22 08:57:01,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,584 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-22 08:57:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,593 INFO L225 Difference]: With dead ends: 1456 [2019-10-22 08:57:01,594 INFO L226 Difference]: Without dead ends: 1456 [2019-10-22 08:57:01,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:57:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2019-10-22 08:57:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1051. [2019-10-22 08:57:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2019-10-22 08:57:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 3108 transitions. [2019-10-22 08:57:01,644 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 3108 transitions. Word has length 36 [2019-10-22 08:57:01,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,644 INFO L462 AbstractCegarLoop]: Abstraction has 1051 states and 3108 transitions. [2019-10-22 08:57:01,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:57:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 3108 transitions. [2019-10-22 08:57:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:57:01,649 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,649 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 08:57:01,650 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,650 INFO L82 PathProgramCache]: Analyzing trace with hash -2123002118, now seen corresponding path program 3 times [2019-10-22 08:57:01,650 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,651 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273571874] [2019-10-22 08:57:01,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,651 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,651 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,703 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 08:57:01,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273571874] [2019-10-22 08:57:01,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:01,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708956145] [2019-10-22 08:57:01,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:01,706 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:01,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,713 INFO L87 Difference]: Start difference. First operand 1051 states and 3108 transitions. Second operand 3 states. [2019-10-22 08:57:01,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,745 INFO L93 Difference]: Finished difference Result 1303 states and 3546 transitions. [2019-10-22 08:57:01,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:57:01,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,754 INFO L225 Difference]: With dead ends: 1303 [2019-10-22 08:57:01,755 INFO L226 Difference]: Without dead ends: 1294 [2019-10-22 08:57:01,755 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2019-10-22 08:57:01,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 973. [2019-10-22 08:57:01,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-22 08:57:01,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2744 transitions. [2019-10-22 08:57:01,798 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2744 transitions. Word has length 36 [2019-10-22 08:57:01,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,798 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 2744 transitions. [2019-10-22 08:57:01,798 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:01,799 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2744 transitions. [2019-10-22 08:57:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:57:01,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,802 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 08:57:01,803 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,805 INFO L82 PathProgramCache]: Analyzing trace with hash -357662324, now seen corresponding path program 4 times [2019-10-22 08:57:01,805 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,805 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143338167] [2019-10-22 08:57:01,805 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,805 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,853 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 08:57:01,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143338167] [2019-10-22 08:57:01,853 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:01,854 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497343755] [2019-10-22 08:57:01,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:01,854 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:01,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,855 INFO L87 Difference]: Start difference. First operand 973 states and 2744 transitions. Second operand 3 states. [2019-10-22 08:57:01,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:01,912 INFO L93 Difference]: Finished difference Result 880 states and 2301 transitions. [2019-10-22 08:57:01,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:01,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 08:57:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:01,916 INFO L225 Difference]: With dead ends: 880 [2019-10-22 08:57:01,916 INFO L226 Difference]: Without dead ends: 655 [2019-10-22 08:57:01,917 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-10-22 08:57:01,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 568. [2019-10-22 08:57:01,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-22 08:57:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1424 transitions. [2019-10-22 08:57:01,935 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1424 transitions. Word has length 36 [2019-10-22 08:57:01,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:01,935 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 1424 transitions. [2019-10-22 08:57:01,936 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1424 transitions. [2019-10-22 08:57:01,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:57:01,939 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:01,939 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 08:57:01,939 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:01,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:01,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1446249897, now seen corresponding path program 1 times [2019-10-22 08:57:01,940 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:01,940 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789989470] [2019-10-22 08:57:01,940 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,940 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:01,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:01,990 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 08:57:01,990 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789989470] [2019-10-22 08:57:01,991 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:01,991 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:01,991 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130384215] [2019-10-22 08:57:01,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:01,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:01,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:01,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:01,993 INFO L87 Difference]: Start difference. First operand 568 states and 1424 transitions. Second operand 3 states. [2019-10-22 08:57:02,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:02,009 INFO L93 Difference]: Finished difference Result 544 states and 1360 transitions. [2019-10-22 08:57:02,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:02,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 08:57:02,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:02,012 INFO L225 Difference]: With dead ends: 544 [2019-10-22 08:57:02,013 INFO L226 Difference]: Without dead ends: 469 [2019-10-22 08:57:02,013 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:02,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-10-22 08:57:02,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2019-10-22 08:57:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-22 08:57:02,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1171 transitions. [2019-10-22 08:57:02,029 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1171 transitions. Word has length 39 [2019-10-22 08:57:02,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:02,030 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 1171 transitions. [2019-10-22 08:57:02,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1171 transitions. [2019-10-22 08:57:02,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 08:57:02,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:57:02,032 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 08:57:02,032 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:57:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:02,033 INFO L82 PathProgramCache]: Analyzing trace with hash -39197425, now seen corresponding path program 1 times [2019-10-22 08:57:02,033 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:02,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700788856] [2019-10-22 08:57:02,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,034 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:02,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:02,074 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 08:57:02,074 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700788856] [2019-10-22 08:57:02,074 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:02,075 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:57:02,075 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134617565] [2019-10-22 08:57:02,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 08:57:02,076 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:02,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:57:02,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:02,076 INFO L87 Difference]: Start difference. First operand 469 states and 1171 transitions. Second operand 3 states. [2019-10-22 08:57:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:02,084 INFO L93 Difference]: Finished difference Result 310 states and 825 transitions. [2019-10-22 08:57:02,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:57:02,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 08:57:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:57:02,086 INFO L225 Difference]: With dead ends: 310 [2019-10-22 08:57:02,086 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:57:02,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:57:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:57:02,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:57:02,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:57:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:02,087 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 08:57:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:57:02,087 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:02,088 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 08:57:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:02,088 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:57:02,092 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:57:02,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:57:02 BasicIcfg [2019-10-22 08:57:02,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:57:02,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:02,095 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:02,095 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:02,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:56:59" (3/4) ... [2019-10-22 08:57:02,100 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:57:02,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-10-22 08:57:02,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 08:57:02,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-10-22 08:57:02,113 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:57:02,157 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8daa7f85-0e85-4eee-bc52-056bf2a12da4/bin/uautomizer/witness.graphml [2019-10-22 08:57:02,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:02,160 INFO L168 Benchmark]: Toolchain (without parser) took 3422.98 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 940.5 MB in the beginning and 847.1 MB in the end (delta: 93.4 MB). Peak memory consumption was 249.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:02,160 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:02,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:02,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.33 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:02,164 INFO L168 Benchmark]: Boogie Preprocessor took 30.78 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 08:57:02,164 INFO L168 Benchmark]: RCFGBuilder took 502.91 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:02,165 INFO L168 Benchmark]: TraceAbstraction took 2116.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.1 MB in the end (delta: 246.7 MB). Peak memory consumption was 246.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:02,165 INFO L168 Benchmark]: Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 847.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:02,168 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 660.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.7 MB). Free memory was 940.5 MB in the beginning and 1.1 GB in the end (delta: -189.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.33 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.78 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. * RCFGBuilder took 502.91 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: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2116.12 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.1 MB in the end (delta: 246.7 MB). Peak memory consumption was 246.7 MB. Max. memory is 11.5 GB. * Witness Printer took 63.15 ms. Allocated memory is still 1.2 GB. Free memory is still 847.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 723]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 697]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 123 locations, 4 error locations. Result: SAFE, OverallTime: 1.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 795 SDtfs, 286 SDslu, 511 SDs, 0 SdLazy, 91 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1816occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 918 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 291 NumberOfCodeBlocks, 291 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 12656 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...