./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_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/lamport.i -s /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 11:21:08,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:08,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:08,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:08,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:08,603 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:08,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:08,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:08,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:08,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:08,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:08,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:08,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:08,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:08,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:08,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:08,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:08,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:08,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:08,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:08,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:08,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:08,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:08,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:08,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:08,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:08,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:08,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:08,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:08,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:08,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:08,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:08,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:08,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:08,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:08,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:08,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:08,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:08,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:08,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:08,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:08,635 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:08,652 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:08,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:08,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:08,654 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:08,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:08,654 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:08,655 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:08,655 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:08,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:08,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:08,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:08,656 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:08,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:08,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:08,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:08,658 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:08,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:08,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:08,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:08,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:08,659 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:08,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:08,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:08,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:08,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:08,660 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4f308056a588d49578d6b80408483bd72f47ef45 [2019-10-22 11:21:08,703 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:08,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:08,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:08,719 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:08,720 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:08,720 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/../../sv-benchmarks/c/pthread-atomic/lamport.i [2019-10-22 11:21:08,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/data/9876c40cf/ca86e951c0d1483d8cca1abd84cc6f76/FLAG0b17e72a2 [2019-10-22 11:21:09,193 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:09,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/sv-benchmarks/c/pthread-atomic/lamport.i [2019-10-22 11:21:09,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/data/9876c40cf/ca86e951c0d1483d8cca1abd84cc6f76/FLAG0b17e72a2 [2019-10-22 11:21:09,216 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/data/9876c40cf/ca86e951c0d1483d8cca1abd84cc6f76 [2019-10-22 11:21:09,219 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:09,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:09,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:09,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:09,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:09,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,229 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d11e977 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09, skipping insertion in model container [2019-10-22 11:21:09,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,236 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:09,273 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:09,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:09,646 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:09,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:09,748 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:09,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09 WrapperNode [2019-10-22 11:21:09,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:09,749 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:09,749 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:09,750 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:09,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:09,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:09,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:09,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:09,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... [2019-10-22 11:21:09,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:09,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:09,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:09,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:09,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:09,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 11:21:09,870 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2019-10-22 11:21:09,870 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2019-10-22 11:21:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2019-10-22 11:21:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2019-10-22 11:21:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-22 11:21:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 11:21:09,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:09,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:09,873 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 11:21:10,171 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:10,171 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-10-22 11:21:10,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10 BoogieIcfgContainer [2019-10-22 11:21:10,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:10,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:10,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:10,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:10,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:09" (1/3) ... [2019-10-22 11:21:10,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f7767b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:09" (2/3) ... [2019-10-22 11:21:10,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f7767b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:10, skipping insertion in model container [2019-10-22 11:21:10,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10" (3/3) ... [2019-10-22 11:21:10,179 INFO L109 eAbstractionObserver]: Analyzing ICFG lamport.i [2019-10-22 11:21:10,223 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,223 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,223 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,223 WARN L315 ript$VariableManager]: TermVariabe Thread1_thr2_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,224 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,224 WARN L315 ript$VariableManager]: TermVariabe |Thread1_thr2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,225 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,230 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#in~_.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,230 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,231 WARN L315 ript$VariableManager]: TermVariabe Thread0_thr1_~_.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,231 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,232 WARN L315 ript$VariableManager]: TermVariabe |Thread0_thr1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-10-22 11:21:10,267 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-10-22 11:21:10,267 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:10,275 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-10-22 11:21:10,286 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-10-22 11:21:10,307 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:10,308 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:10,308 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:10,308 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:10,308 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:10,308 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:10,308 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:10,309 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:10,321 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 77 places, 100 transitions [2019-10-22 11:21:10,445 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1816 states. [2019-10-22 11:21:10,448 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states. [2019-10-22 11:21:10,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:21:10,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:10,461 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 11:21:10,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:10,471 INFO L82 PathProgramCache]: Analyzing trace with hash -759027401, now seen corresponding path program 1 times [2019-10-22 11:21:10,480 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:10,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552271722] [2019-10-22 11:21:10,480 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:10,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:10,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:10,625 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 11:21:10,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552271722] [2019-10-22 11:21:10,629 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:10,630 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:10,630 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320501946] [2019-10-22 11:21:10,633 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:10,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:10,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:10,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:10,646 INFO L87 Difference]: Start difference. First operand 1816 states. Second operand 2 states. [2019-10-22 11:21:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:10,715 INFO L93 Difference]: Finished difference Result 1816 states and 5404 transitions. [2019-10-22 11:21:10,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:10,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-10-22 11:21:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:10,751 INFO L225 Difference]: With dead ends: 1816 [2019-10-22 11:21:10,753 INFO L226 Difference]: Without dead ends: 1702 [2019-10-22 11:21:10,755 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 11:21:10,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2019-10-22 11:21:10,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2019-10-22 11:21:10,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1702 states. [2019-10-22 11:21:10,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 5134 transitions. [2019-10-22 11:21:10,897 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 5134 transitions. Word has length 18 [2019-10-22 11:21:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:10,897 INFO L462 AbstractCegarLoop]: Abstraction has 1702 states and 5134 transitions. [2019-10-22 11:21:10,897 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:10,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 5134 transitions. [2019-10-22 11:21:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:10,899 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:10,899 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 11:21:10,900 INFO L410 AbstractCegarLoop]: === Iteration 2 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:10,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:10,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1289082709, now seen corresponding path program 1 times [2019-10-22 11:21:10,900 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:10,901 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564266324] [2019-10-22 11:21:10,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:10,901 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:10,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:10,979 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 11:21:10,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564266324] [2019-10-22 11:21:10,980 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:10,980 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:10,980 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144673242] [2019-10-22 11:21:10,982 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:10,982 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:10,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:10,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:10,982 INFO L87 Difference]: Start difference. First operand 1702 states and 5134 transitions. Second operand 3 states. [2019-10-22 11:21:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,066 INFO L93 Difference]: Finished difference Result 1687 states and 5003 transitions. [2019-10-22 11:21:11,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,067 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:21:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,074 INFO L225 Difference]: With dead ends: 1687 [2019-10-22 11:21:11,075 INFO L226 Difference]: Without dead ends: 1399 [2019-10-22 11:21:11,076 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 11:21:11,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1399 states. [2019-10-22 11:21:11,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1399 to 1345. [2019-10-22 11:21:11,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1345 states. [2019-10-22 11:21:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 4069 transitions. [2019-10-22 11:21:11,120 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 4069 transitions. Word has length 24 [2019-10-22 11:21:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,120 INFO L462 AbstractCegarLoop]: Abstraction has 1345 states and 4069 transitions. [2019-10-22 11:21:11,120 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 4069 transitions. [2019-10-22 11:21:11,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:21:11,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,124 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 11:21:11,124 INFO L410 AbstractCegarLoop]: === Iteration 3 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,124 INFO L82 PathProgramCache]: Analyzing trace with hash -734915409, now seen corresponding path program 1 times [2019-10-22 11:21:11,124 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479895413] [2019-10-22 11:21:11,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,189 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 11:21:11,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479895413] [2019-10-22 11:21:11,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:11,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108178462] [2019-10-22 11:21:11,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:11,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:11,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:11,191 INFO L87 Difference]: Start difference. First operand 1345 states and 4069 transitions. Second operand 3 states. [2019-10-22 11:21:11,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,228 INFO L93 Difference]: Finished difference Result 1255 states and 3767 transitions. [2019-10-22 11:21:11,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-22 11:21:11,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,236 INFO L225 Difference]: With dead ends: 1255 [2019-10-22 11:21:11,237 INFO L226 Difference]: Without dead ends: 952 [2019-10-22 11:21:11,237 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 11:21:11,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2019-10-22 11:21:11,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 952. [2019-10-22 11:21:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2019-10-22 11:21:11,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 2914 transitions. [2019-10-22 11:21:11,266 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 2914 transitions. Word has length 27 [2019-10-22 11:21:11,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,268 INFO L462 AbstractCegarLoop]: Abstraction has 952 states and 2914 transitions. [2019-10-22 11:21:11,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 2914 transitions. [2019-10-22 11:21:11,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:11,278 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,279 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 11:21:11,279 INFO L410 AbstractCegarLoop]: === Iteration 4 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,279 INFO L82 PathProgramCache]: Analyzing trace with hash 585747710, now seen corresponding path program 1 times [2019-10-22 11:21:11,279 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,280 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384414825] [2019-10-22 11:21:11,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,280 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,280 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,352 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 11:21:11,353 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384414825] [2019-10-22 11:21:11,353 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:11,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178204720] [2019-10-22 11:21:11,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:11,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:11,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:11,354 INFO L87 Difference]: Start difference. First operand 952 states and 2914 transitions. Second operand 3 states. [2019-10-22 11:21:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,432 INFO L93 Difference]: Finished difference Result 1228 states and 3688 transitions. [2019-10-22 11:21:11,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,434 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:21:11,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,439 INFO L225 Difference]: With dead ends: 1228 [2019-10-22 11:21:11,442 INFO L226 Difference]: Without dead ends: 994 [2019-10-22 11:21:11,442 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 11:21:11,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2019-10-22 11:21:11,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 943. [2019-10-22 11:21:11,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2019-10-22 11:21:11,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 2817 transitions. [2019-10-22 11:21:11,476 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 2817 transitions. Word has length 36 [2019-10-22 11:21:11,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,476 INFO L462 AbstractCegarLoop]: Abstraction has 943 states and 2817 transitions. [2019-10-22 11:21:11,476 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,476 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 2817 transitions. [2019-10-22 11:21:11,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:11,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,480 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 11:21:11,480 INFO L410 AbstractCegarLoop]: === Iteration 5 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1432217762, now seen corresponding path program 2 times [2019-10-22 11:21:11,481 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074234958] [2019-10-22 11:21:11,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,483 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,483 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,537 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 11:21:11,537 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074234958] [2019-10-22 11:21:11,538 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,538 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:11,538 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006802628] [2019-10-22 11:21:11,538 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:11,539 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:11,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:11,540 INFO L87 Difference]: Start difference. First operand 943 states and 2817 transitions. Second operand 4 states. [2019-10-22 11:21:11,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,581 INFO L93 Difference]: Finished difference Result 1456 states and 4146 transitions. [2019-10-22 11:21:11,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2019-10-22 11:21:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,589 INFO L225 Difference]: With dead ends: 1456 [2019-10-22 11:21:11,589 INFO L226 Difference]: Without dead ends: 1456 [2019-10-22 11:21:11,590 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 11:21:11,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2019-10-22 11:21:11,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1051. [2019-10-22 11:21:11,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2019-10-22 11:21:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 3108 transitions. [2019-10-22 11:21:11,632 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 3108 transitions. Word has length 36 [2019-10-22 11:21:11,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,633 INFO L462 AbstractCegarLoop]: Abstraction has 1051 states and 3108 transitions. [2019-10-22 11:21:11,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:11,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 3108 transitions. [2019-10-22 11:21:11,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:11,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,636 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 11:21:11,636 INFO L410 AbstractCegarLoop]: === Iteration 6 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2137301798, now seen corresponding path program 3 times [2019-10-22 11:21:11,640 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,640 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605841994] [2019-10-22 11:21:11,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,641 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,679 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 11:21:11,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605841994] [2019-10-22 11:21:11,679 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,679 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:11,684 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505955246] [2019-10-22 11:21:11,685 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:11,685 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:11,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:11,686 INFO L87 Difference]: Start difference. First operand 1051 states and 3108 transitions. Second operand 3 states. [2019-10-22 11:21:11,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,713 INFO L93 Difference]: Finished difference Result 1303 states and 3546 transitions. [2019-10-22 11:21:11,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,714 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:21:11,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,721 INFO L225 Difference]: With dead ends: 1303 [2019-10-22 11:21:11,721 INFO L226 Difference]: Without dead ends: 1294 [2019-10-22 11:21:11,722 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 11:21:11,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2019-10-22 11:21:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 973. [2019-10-22 11:21:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 973 states. [2019-10-22 11:21:11,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 2744 transitions. [2019-10-22 11:21:11,756 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 2744 transitions. Word has length 36 [2019-10-22 11:21:11,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,757 INFO L462 AbstractCegarLoop]: Abstraction has 973 states and 2744 transitions. [2019-10-22 11:21:11,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 2744 transitions. [2019-10-22 11:21:11,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-22 11:21:11,760 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,761 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 11:21:11,762 INFO L410 AbstractCegarLoop]: === Iteration 7 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,763 INFO L82 PathProgramCache]: Analyzing trace with hash -357662324, now seen corresponding path program 4 times [2019-10-22 11:21:11,764 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,764 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297302777] [2019-10-22 11:21:11,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,764 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,764 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,799 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 11:21:11,799 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297302777] [2019-10-22 11:21:11,800 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,800 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:11,800 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404553301] [2019-10-22 11:21:11,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:11,801 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:11,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:11,803 INFO L87 Difference]: Start difference. First operand 973 states and 2744 transitions. Second operand 3 states. [2019-10-22 11:21:11,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,873 INFO L93 Difference]: Finished difference Result 880 states and 2301 transitions. [2019-10-22 11:21:11,873 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,873 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2019-10-22 11:21:11,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,876 INFO L225 Difference]: With dead ends: 880 [2019-10-22 11:21:11,876 INFO L226 Difference]: Without dead ends: 655 [2019-10-22 11:21:11,877 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 11:21:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2019-10-22 11:21:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 568. [2019-10-22 11:21:11,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2019-10-22 11:21:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 1424 transitions. [2019-10-22 11:21:11,892 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 1424 transitions. Word has length 36 [2019-10-22 11:21:11,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,892 INFO L462 AbstractCegarLoop]: Abstraction has 568 states and 1424 transitions. [2019-10-22 11:21:11,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 1424 transitions. [2019-10-22 11:21:11,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:21:11,895 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,895 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 11:21:11,895 INFO L410 AbstractCegarLoop]: === Iteration 8 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1446249897, now seen corresponding path program 1 times [2019-10-22 11:21:11,896 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,896 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561589013] [2019-10-22 11:21:11,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,896 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,896 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:11,938 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 11:21:11,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561589013] [2019-10-22 11:21:11,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:11,939 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:11,939 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139508767] [2019-10-22 11:21:11,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:11,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:11,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:11,940 INFO L87 Difference]: Start difference. First operand 568 states and 1424 transitions. Second operand 3 states. [2019-10-22 11:21:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:11,952 INFO L93 Difference]: Finished difference Result 544 states and 1360 transitions. [2019-10-22 11:21:11,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:11,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 11:21:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:11,954 INFO L225 Difference]: With dead ends: 544 [2019-10-22 11:21:11,955 INFO L226 Difference]: Without dead ends: 469 [2019-10-22 11:21:11,955 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 11:21:11,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2019-10-22 11:21:11,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 469. [2019-10-22 11:21:11,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 469 states. [2019-10-22 11:21:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 1171 transitions. [2019-10-22 11:21:11,967 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 1171 transitions. Word has length 39 [2019-10-22 11:21:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:11,968 INFO L462 AbstractCegarLoop]: Abstraction has 469 states and 1171 transitions. [2019-10-22 11:21:11,968 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 1171 transitions. [2019-10-22 11:21:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:21:11,969 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:11,970 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 11:21:11,970 INFO L410 AbstractCegarLoop]: === Iteration 9 === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash -39197425, now seen corresponding path program 1 times [2019-10-22 11:21:11,970 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:11,971 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471366324] [2019-10-22 11:21:11,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,971 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:11,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:12,014 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 11:21:12,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471366324] [2019-10-22 11:21:12,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:12,015 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:12,015 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828915365] [2019-10-22 11:21:12,015 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:12,015 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:12,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:12,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:12,016 INFO L87 Difference]: Start difference. First operand 469 states and 1171 transitions. Second operand 3 states. [2019-10-22 11:21:12,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:12,023 INFO L93 Difference]: Finished difference Result 310 states and 825 transitions. [2019-10-22 11:21:12,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:12,025 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2019-10-22 11:21:12,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:12,026 INFO L225 Difference]: With dead ends: 310 [2019-10-22 11:21:12,026 INFO L226 Difference]: Without dead ends: 0 [2019-10-22 11:21:12,026 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 11:21:12,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-22 11:21:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-22 11:21:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-22 11:21:12,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 11:21:12,027 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-10-22 11:21:12,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:12,027 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 11:21:12,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:12,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-22 11:21:12,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-22 11:21:12,031 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-10-22 11:21:12,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:12 BasicIcfg [2019-10-22 11:21:12,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:12,034 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:12,034 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:12,034 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:12,035 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:10" (3/4) ... [2019-10-22 11:21:12,039 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-10-22 11:21:12,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2019-10-22 11:21:12,048 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2019-10-22 11:21:12,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-10-22 11:21:12,053 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-10-22 11:21:12,092 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_aebdf60f-d85c-46b9-a617-c5618e9bee49/bin/utaipan/witness.graphml [2019-10-22 11:21:12,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:12,094 INFO L168 Benchmark]: Toolchain (without parser) took 2873.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -119.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:12,095 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:12,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:12,099 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:12,099 INFO L168 Benchmark]: Boogie Preprocessor took 26.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:12,100 INFO L168 Benchmark]: RCFGBuilder took 357.79 ms. Allocated memory is still 1.1 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 11:21:12,101 INFO L168 Benchmark]: TraceAbstraction took 1860.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:12,105 INFO L168 Benchmark]: Witness Printer took 58.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:12,107 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 527.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 115.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -152.2 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.06 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 357.79 ms. Allocated memory is still 1.1 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 1860.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -1.8 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 58.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. 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: 1.7s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 795 SDtfs, 287 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: 0.3s 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, 12586 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...