./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_pso.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_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i -s /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/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 9298bf29eb998aaacc45893199d33309400292c8 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:30,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:30,712 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:30,720 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:30,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:30,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:30,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:30,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:30,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:30,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:30,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:30,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:30,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:30,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:30,729 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:30,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:30,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:30,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:30,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:30,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:30,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:30,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:30,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:30,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:30,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:30,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:30,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:30,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:30,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:30,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:30,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:30,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:30,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:30,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:30,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:30,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:30,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:30,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:30,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:30,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:30,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:30,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:30,759 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:30,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:30,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:30,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:30,761 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:30,761 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:30,761 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:30,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:30,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:30,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:30,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:30,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:30,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:30,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:30,764 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:30,764 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:30,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:30,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:30,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:30,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:30,765 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:30,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:30,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:30,765 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_f72e2311-6c67-4cf9-bc5f-216c473aa46c/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 -> 9298bf29eb998aaacc45893199d33309400292c8 [2019-10-22 08:55:30,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:30,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:30,801 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:30,802 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:30,802 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:30,803 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2019-10-22 08:55:30,846 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/data/8defa4f79/32b664f08cbf45a5a056eaf3265b38dd/FLAGf306a942f [2019-10-22 08:55:31,241 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:31,242 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/sv-benchmarks/c/pthread-wmm/safe019_pso.opt.i [2019-10-22 08:55:31,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/data/8defa4f79/32b664f08cbf45a5a056eaf3265b38dd/FLAGf306a942f [2019-10-22 08:55:31,266 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/data/8defa4f79/32b664f08cbf45a5a056eaf3265b38dd [2019-10-22 08:55:31,268 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:31,269 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:31,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:31,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:31,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:31,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3df6e0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31, skipping insertion in model container [2019-10-22 08:55:31,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,284 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:31,320 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:31,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:31,678 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:31,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:31,789 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:31,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31 WrapperNode [2019-10-22 08:55:31,789 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:31,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:31,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:31,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:31,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,817 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:31,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:31,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:31,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:31,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,858 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... [2019-10-22 08:55:31,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:31,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:31,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:31,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:31,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:31,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-10-22 08:55:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-10-22 08:55:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-10-22 08:55:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-10-22 08:55:31,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-10-22 08:55:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-10-22 08:55:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-10-22 08:55:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-10-22 08:55:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:31,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:31,945 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-10-22 08:55:32,328 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:32,328 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 08:55:32,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:32 BoogieIcfgContainer [2019-10-22 08:55:32,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:32,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:32,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:32,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:32,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:31" (1/3) ... [2019-10-22 08:55:32,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa7e2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:32, skipping insertion in model container [2019-10-22 08:55:32,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:31" (2/3) ... [2019-10-22 08:55:32,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa7e2a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:32, skipping insertion in model container [2019-10-22 08:55:32,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:32" (3/3) ... [2019-10-22 08:55:32,336 INFO L109 eAbstractionObserver]: Analyzing ICFG safe019_pso.opt.i [2019-10-22 08:55:32,377 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,378 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,378 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,378 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,378 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,378 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,379 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,379 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,379 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,379 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#t~nondet3.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,379 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,380 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,381 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,381 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#t~nondet4.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,381 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,381 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,382 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#t~nondet5.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,383 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,384 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#t~nondet6.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 08:55:32,398 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 08:55:32,398 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:32,405 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:32,413 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:32,430 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:32,434 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:32,434 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:32,434 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:32,434 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:32,434 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:32,434 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:32,435 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:32,444 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 67 places, 63 transitions [2019-10-22 08:55:33,530 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 13135 states. [2019-10-22 08:55:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13135 states. [2019-10-22 08:55:33,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 08:55:33,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:33,579 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] [2019-10-22 08:55:33,585 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:33,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:33,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1523981989, now seen corresponding path program 1 times [2019-10-22 08:55:33,601 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:33,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025882082] [2019-10-22 08:55:33,602 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:33,602 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:33,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:33,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:33,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025882082] [2019-10-22 08:55:33,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:33,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:33,961 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051431710] [2019-10-22 08:55:33,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:33,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:33,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:33,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:33,988 INFO L87 Difference]: Start difference. First operand 13135 states. Second operand 4 states. [2019-10-22 08:55:34,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:34,268 INFO L93 Difference]: Finished difference Result 13741 states and 55792 transitions. [2019-10-22 08:55:34,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:34,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-10-22 08:55:34,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:34,338 INFO L225 Difference]: With dead ends: 13741 [2019-10-22 08:55:34,338 INFO L226 Difference]: Without dead ends: 5628 [2019-10-22 08:55:34,340 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5628 states. [2019-10-22 08:55:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5628 to 5628. [2019-10-22 08:55:34,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5628 states. [2019-10-22 08:55:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5628 states to 5628 states and 22351 transitions. [2019-10-22 08:55:34,625 INFO L78 Accepts]: Start accepts. Automaton has 5628 states and 22351 transitions. Word has length 34 [2019-10-22 08:55:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:34,626 INFO L462 AbstractCegarLoop]: Abstraction has 5628 states and 22351 transitions. [2019-10-22 08:55:34,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:34,626 INFO L276 IsEmpty]: Start isEmpty. Operand 5628 states and 22351 transitions. [2019-10-22 08:55:34,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 08:55:34,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:34,632 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:34,632 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:34,633 INFO L82 PathProgramCache]: Analyzing trace with hash 2033993381, now seen corresponding path program 1 times [2019-10-22 08:55:34,633 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:34,633 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297143307] [2019-10-22 08:55:34,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,633 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:34,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:34,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297143307] [2019-10-22 08:55:34,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:34,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:55:34,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147859878] [2019-10-22 08:55:34,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:55:34,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:34,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:55:34,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:34,780 INFO L87 Difference]: Start difference. First operand 5628 states and 22351 transitions. Second operand 5 states. [2019-10-22 08:55:34,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:34,923 INFO L93 Difference]: Finished difference Result 6140 states and 23831 transitions. [2019-10-22 08:55:34,923 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:34,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2019-10-22 08:55:34,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:34,956 INFO L225 Difference]: With dead ends: 6140 [2019-10-22 08:55:34,956 INFO L226 Difference]: Without dead ends: 5516 [2019-10-22 08:55:34,957 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:34,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5516 states. [2019-10-22 08:55:35,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5516 to 5516. [2019-10-22 08:55:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5516 states. [2019-10-22 08:55:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 21819 transitions. [2019-10-22 08:55:35,236 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 21819 transitions. Word has length 35 [2019-10-22 08:55:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:35,237 INFO L462 AbstractCegarLoop]: Abstraction has 5516 states and 21819 transitions. [2019-10-22 08:55:35,237 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:55:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 21819 transitions. [2019-10-22 08:55:35,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 08:55:35,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:35,244 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:35,245 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:35,245 INFO L82 PathProgramCache]: Analyzing trace with hash -2064722079, now seen corresponding path program 1 times [2019-10-22 08:55:35,246 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:35,246 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015644743] [2019-10-22 08:55:35,246 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,247 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:35,340 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015644743] [2019-10-22 08:55:35,340 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:35,340 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:55:35,340 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76990169] [2019-10-22 08:55:35,341 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:35,341 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:35,341 INFO L87 Difference]: Start difference. First operand 5516 states and 21819 transitions. Second operand 6 states. [2019-10-22 08:55:35,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:35,459 INFO L93 Difference]: Finished difference Result 5452 states and 20827 transitions. [2019-10-22 08:55:35,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:35,460 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2019-10-22 08:55:35,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:35,485 INFO L225 Difference]: With dead ends: 5452 [2019-10-22 08:55:35,485 INFO L226 Difference]: Without dead ends: 4844 [2019-10-22 08:55:35,485 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 08:55:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2019-10-22 08:55:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 4844. [2019-10-22 08:55:35,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4844 states. [2019-10-22 08:55:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4844 states to 4844 states and 18795 transitions. [2019-10-22 08:55:35,615 INFO L78 Accepts]: Start accepts. Automaton has 4844 states and 18795 transitions. Word has length 36 [2019-10-22 08:55:35,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:35,615 INFO L462 AbstractCegarLoop]: Abstraction has 4844 states and 18795 transitions. [2019-10-22 08:55:35,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:35,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4844 states and 18795 transitions. [2019-10-22 08:55:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-22 08:55:35,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:35,622 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:35,622 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash -971785873, now seen corresponding path program 1 times [2019-10-22 08:55:35,623 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:35,623 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942545247] [2019-10-22 08:55:35,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,623 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:35,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:35,708 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942545247] [2019-10-22 08:55:35,708 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:35,709 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:35,709 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967031128] [2019-10-22 08:55:35,709 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:35,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:35,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:35,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:35,710 INFO L87 Difference]: Start difference. First operand 4844 states and 18795 transitions. Second operand 7 states. [2019-10-22 08:55:35,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:35,823 INFO L93 Difference]: Finished difference Result 3564 states and 13035 transitions. [2019-10-22 08:55:35,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:35,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2019-10-22 08:55:35,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:35,836 INFO L225 Difference]: With dead ends: 3564 [2019-10-22 08:55:35,836 INFO L226 Difference]: Without dead ends: 3052 [2019-10-22 08:55:35,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:35,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2019-10-22 08:55:35,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3052. [2019-10-22 08:55:35,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3052 states. [2019-10-22 08:55:35,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3052 states to 3052 states and 11179 transitions. [2019-10-22 08:55:35,911 INFO L78 Accepts]: Start accepts. Automaton has 3052 states and 11179 transitions. Word has length 37 [2019-10-22 08:55:35,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:35,912 INFO L462 AbstractCegarLoop]: Abstraction has 3052 states and 11179 transitions. [2019-10-22 08:55:35,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:35,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3052 states and 11179 transitions. [2019-10-22 08:55:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:35,917 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:35,917 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:35,917 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:35,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:35,918 INFO L82 PathProgramCache]: Analyzing trace with hash 168191397, now seen corresponding path program 1 times [2019-10-22 08:55:35,918 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:35,918 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965972233] [2019-10-22 08:55:35,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,918 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:35,918 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:36,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:36,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965972233] [2019-10-22 08:55:36,068 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:36,068 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:36,069 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983055226] [2019-10-22 08:55:36,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:36,069 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:36,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:36,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:36,070 INFO L87 Difference]: Start difference. First operand 3052 states and 11179 transitions. Second operand 8 states. [2019-10-22 08:55:36,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:36,340 INFO L93 Difference]: Finished difference Result 6732 states and 24955 transitions. [2019-10-22 08:55:36,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 08:55:36,340 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 08:55:36,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:36,358 INFO L225 Difference]: With dead ends: 6732 [2019-10-22 08:55:36,358 INFO L226 Difference]: Without dead ends: 2776 [2019-10-22 08:55:36,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:55:36,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2019-10-22 08:55:36,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 2776. [2019-10-22 08:55:36,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2776 states. [2019-10-22 08:55:36,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 10259 transitions. [2019-10-22 08:55:36,496 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 10259 transitions. Word has length 38 [2019-10-22 08:55:36,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:36,496 INFO L462 AbstractCegarLoop]: Abstraction has 2776 states and 10259 transitions. [2019-10-22 08:55:36,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:36,497 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 10259 transitions. [2019-10-22 08:55:36,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:36,500 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:36,501 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:36,501 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:36,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:36,501 INFO L82 PathProgramCache]: Analyzing trace with hash 1447932215, now seen corresponding path program 2 times [2019-10-22 08:55:36,501 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:36,501 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054531875] [2019-10-22 08:55:36,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:36,502 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:36,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:36,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:36,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054531875] [2019-10-22 08:55:36,632 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:36,632 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 08:55:36,632 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967248437] [2019-10-22 08:55:36,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:55:36,633 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:36,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:55:36,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:36,633 INFO L87 Difference]: Start difference. First operand 2776 states and 10259 transitions. Second operand 7 states. [2019-10-22 08:55:36,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:36,799 INFO L93 Difference]: Finished difference Result 4712 states and 17451 transitions. [2019-10-22 08:55:36,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:36,799 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-22 08:55:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:36,810 INFO L225 Difference]: With dead ends: 4712 [2019-10-22 08:55:36,810 INFO L226 Difference]: Without dead ends: 3032 [2019-10-22 08:55:36,811 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-10-22 08:55:36,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2019-10-22 08:55:36,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2696. [2019-10-22 08:55:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2696 states. [2019-10-22 08:55:36,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 9971 transitions. [2019-10-22 08:55:36,878 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 9971 transitions. Word has length 38 [2019-10-22 08:55:36,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:36,878 INFO L462 AbstractCegarLoop]: Abstraction has 2696 states and 9971 transitions. [2019-10-22 08:55:36,878 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:55:36,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 9971 transitions. [2019-10-22 08:55:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:36,882 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:36,883 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:36,883 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:36,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:36,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1047359705, now seen corresponding path program 3 times [2019-10-22 08:55:36,883 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:36,883 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273970153] [2019-10-22 08:55:36,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:36,884 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:36,884 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:36,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:36,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273970153] [2019-10-22 08:55:36,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:36,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:36,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965793240] [2019-10-22 08:55:36,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:36,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:36,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:36,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:36,990 INFO L87 Difference]: Start difference. First operand 2696 states and 9971 transitions. Second operand 8 states. [2019-10-22 08:55:37,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:37,180 INFO L93 Difference]: Finished difference Result 5912 states and 22203 transitions. [2019-10-22 08:55:37,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 08:55:37,180 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 08:55:37,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:37,188 INFO L225 Difference]: With dead ends: 5912 [2019-10-22 08:55:37,188 INFO L226 Difference]: Without dead ends: 2176 [2019-10-22 08:55:37,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-10-22 08:55:37,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2019-10-22 08:55:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2176. [2019-10-22 08:55:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2176 states. [2019-10-22 08:55:37,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2176 states to 2176 states and 8251 transitions. [2019-10-22 08:55:37,241 INFO L78 Accepts]: Start accepts. Automaton has 2176 states and 8251 transitions. Word has length 38 [2019-10-22 08:55:37,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:37,241 INFO L462 AbstractCegarLoop]: Abstraction has 2176 states and 8251 transitions. [2019-10-22 08:55:37,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:37,241 INFO L276 IsEmpty]: Start isEmpty. Operand 2176 states and 8251 transitions. [2019-10-22 08:55:37,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-22 08:55:37,244 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:37,244 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:37,244 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:37,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:37,244 INFO L82 PathProgramCache]: Analyzing trace with hash 150374941, now seen corresponding path program 4 times [2019-10-22 08:55:37,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:37,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204406156] [2019-10-22 08:55:37,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:37,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:37,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:37,370 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204406156] [2019-10-22 08:55:37,370 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:37,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-22 08:55:37,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260473342] [2019-10-22 08:55:37,371 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:37,371 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:37,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:37,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:37,371 INFO L87 Difference]: Start difference. First operand 2176 states and 8251 transitions. Second operand 8 states. [2019-10-22 08:55:37,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:37,452 INFO L93 Difference]: Finished difference Result 1664 states and 6203 transitions. [2019-10-22 08:55:37,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-22 08:55:37,453 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-22 08:55:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:37,458 INFO L225 Difference]: With dead ends: 1664 [2019-10-22 08:55:37,459 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 08:55:37,459 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-22 08:55:37,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 08:55:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 08:55:37,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 08:55:37,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:55:37,460 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2019-10-22 08:55:37,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:37,460 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:55:37,460 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:37,460 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:55:37,460 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 08:55:37,466 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 08:55:37,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:37 BasicIcfg [2019-10-22 08:55:37,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:37,468 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:37,468 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:37,468 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:37,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:32" (3/4) ... [2019-10-22 08:55:37,473 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 08:55:37,480 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-10-22 08:55:37,481 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-10-22 08:55:37,481 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-10-22 08:55:37,481 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-10-22 08:55:37,485 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-10-22 08:55:37,486 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 08:55:37,532 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_f72e2311-6c67-4cf9-bc5f-216c473aa46c/bin/uautomizer/witness.graphml [2019-10-22 08:55:37,532 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:37,534 INFO L168 Benchmark]: Toolchain (without parser) took 6264.38 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 236.5 MB). Free memory was 939.3 MB in the beginning and 911.9 MB in the end (delta: 27.4 MB). Peak memory consumption was 263.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,535 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:37,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:37,536 INFO L168 Benchmark]: Boogie Preprocessor took 22.83 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,536 INFO L168 Benchmark]: RCFGBuilder took 459.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,537 INFO L168 Benchmark]: TraceAbstraction took 5137.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 93.8 MB). Free memory was 1.1 GB in the beginning and 914.2 MB in the end (delta: 161.5 MB). Peak memory consumption was 255.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,537 INFO L168 Benchmark]: Witness Printer took 63.83 ms. Allocated memory is still 1.3 GB. Free memory was 914.2 MB in the beginning and 911.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:37,540 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 519.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -170.9 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.01 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.83 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: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 459.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5137.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 93.8 MB). Free memory was 1.1 GB in the beginning and 914.2 MB in the end (delta: 161.5 MB). Peak memory consumption was 255.3 MB. Max. memory is 11.5 GB. * Witness Printer took 63.83 ms. Allocated memory is still 1.3 GB. Free memory was 914.2 MB in the beginning and 911.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 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, 87 locations, 1 error locations. Result: SAFE, OverallTime: 5.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1143 SDslu, 1680 SDs, 0 SdLazy, 199 SolverSat, 104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13135occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 336 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 286 ConstructedInterpolants, 0 QuantifiedInterpolants, 32932 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...