./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/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 a75fae05219b8dc129ce0de9eab72445d562eb07 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-16 00:12:26,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-16 00:12:26,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-16 00:12:26,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-16 00:12:26,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-16 00:12:26,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-16 00:12:26,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-16 00:12:26,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-16 00:12:26,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-16 00:12:26,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-16 00:12:26,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-16 00:12:26,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-16 00:12:26,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-16 00:12:26,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-16 00:12:26,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-16 00:12:26,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-16 00:12:26,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-16 00:12:26,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-16 00:12:26,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-16 00:12:26,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-16 00:12:26,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-16 00:12:26,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-16 00:12:26,884 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-16 00:12:26,885 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-16 00:12:26,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-16 00:12:26,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-16 00:12:26,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-16 00:12:26,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-16 00:12:26,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-16 00:12:26,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-16 00:12:26,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-16 00:12:26,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-16 00:12:26,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-16 00:12:26,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-16 00:12:26,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-16 00:12:26,895 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-16 00:12:26,896 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-16 00:12:26,896 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-16 00:12:26,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-16 00:12:26,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-16 00:12:26,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-16 00:12:26,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-16 00:12:26,914 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-16 00:12:26,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-16 00:12:26,916 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-16 00:12:26,916 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-16 00:12:26,917 INFO L138 SettingsManager]: * Use SBE=true [2019-11-16 00:12:26,917 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-16 00:12:26,917 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-16 00:12:26,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-16 00:12:26,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-16 00:12:26,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-16 00:12:26,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-16 00:12:26,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-16 00:12:26,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-16 00:12:26,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-16 00:12:26,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-16 00:12:26,920 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-16 00:12:26,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-16 00:12:26,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-16 00:12:26,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-16 00:12:26,921 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-16 00:12:26,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-16 00:12:26,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-16 00:12:26,922 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-16 00:12:26,922 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-16 00:12:26,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-16 00:12:26,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-16 00:12:26,923 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-16 00:12:26,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-16 00:12:26,924 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/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/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 -> a75fae05219b8dc129ce0de9eab72445d562eb07 [2019-11-16 00:12:26,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-16 00:12:26,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-16 00:12:26,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-16 00:12:26,973 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-16 00:12:26,973 INFO L275 PluginConnector]: CDTParser initialized [2019-11-16 00:12:26,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/../../sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-16 00:12:27,036 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/data/8bc024926/97910ae18d5b48feba78c7760c3d0044/FLAGce4ee04b7 [2019-11-16 00:12:27,509 INFO L306 CDTParser]: Found 1 translation units. [2019-11-16 00:12:27,510 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/sv-benchmarks/c/pthread-wmm/safe027_tso.opt.i [2019-11-16 00:12:27,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/data/8bc024926/97910ae18d5b48feba78c7760c3d0044/FLAGce4ee04b7 [2019-11-16 00:12:27,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/data/8bc024926/97910ae18d5b48feba78c7760c3d0044 [2019-11-16 00:12:27,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-16 00:12:27,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-16 00:12:27,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-16 00:12:27,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-16 00:12:27,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-16 00:12:27,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:12:27" (1/1) ... [2019-11-16 00:12:27,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c52c6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:27, skipping insertion in model container [2019-11-16 00:12:27,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:12:27" (1/1) ... [2019-11-16 00:12:27,826 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-16 00:12:27,886 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-16 00:12:28,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:12:28,322 INFO L188 MainTranslator]: Completed pre-run [2019-11-16 00:12:28,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-16 00:12:28,442 INFO L192 MainTranslator]: Completed translation [2019-11-16 00:12:28,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28 WrapperNode [2019-11-16 00:12:28,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-16 00:12:28,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-16 00:12:28,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-16 00:12:28,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-16 00:12:28,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-16 00:12:28,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-16 00:12:28,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-16 00:12:28,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-16 00:12:28,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,508 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,508 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,518 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... [2019-11-16 00:12:28,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-16 00:12:28,525 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-16 00:12:28,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-16 00:12:28,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-16 00:12:28,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/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 [2019-11-16 00:12:28,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-16 00:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2019-11-16 00:12:28,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-16 00:12:28,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-16 00:12:28,617 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2019-11-16 00:12:28,617 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2019-11-16 00:12:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2019-11-16 00:12:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2019-11-16 00:12:28,618 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2019-11-16 00:12:28,618 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2019-11-16 00:12:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2019-11-16 00:12:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2019-11-16 00:12:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2019-11-16 00:12:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-16 00:12:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-16 00:12:28,623 WARN L202 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2019-11-16 00:12:29,192 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-16 00:12:29,192 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-16 00:12:29,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:29 BoogieIcfgContainer [2019-11-16 00:12:29,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-16 00:12:29,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-16 00:12:29,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-16 00:12:29,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-16 00:12:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:12:27" (1/3) ... [2019-11-16 00:12:29,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dcdf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:29, skipping insertion in model container [2019-11-16 00:12:29,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:12:28" (2/3) ... [2019-11-16 00:12:29,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49dcdf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:12:29, skipping insertion in model container [2019-11-16 00:12:29,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:29" (3/3) ... [2019-11-16 00:12:29,204 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_tso.opt.i [2019-11-16 00:12:29,249 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,249 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,252 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,252 WARN L315 ript$VariableManager]: TermVariabe Thread3_P0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,252 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,253 WARN L315 ript$VariableManager]: TermVariabe |Thread3_P0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,254 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,254 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,254 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,255 WARN L315 ript$VariableManager]: TermVariabe Thread0_P1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,255 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,255 WARN L315 ript$VariableManager]: TermVariabe |Thread0_P1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,256 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,256 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,257 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,257 WARN L315 ript$VariableManager]: TermVariabe Thread1_P2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,259 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,259 WARN L315 ript$VariableManager]: TermVariabe |Thread1_P2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,259 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,260 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,260 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,260 WARN L315 ript$VariableManager]: TermVariabe Thread2_P3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,260 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,260 WARN L315 ript$VariableManager]: TermVariabe |Thread2_P3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2019-11-16 00:12:29,272 WARN L141 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2019-11-16 00:12:29,273 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-16 00:12:29,281 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-16 00:12:29,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-16 00:12:29,310 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-16 00:12:29,310 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-16 00:12:29,310 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-16 00:12:29,311 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-16 00:12:29,311 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-16 00:12:29,311 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-16 00:12:29,311 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-16 00:12:29,311 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-16 00:12:29,322 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 60 transitions [2019-11-16 00:12:29,740 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 5472 states. [2019-11-16 00:12:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states. [2019-11-16 00:12:29,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-16 00:12:29,779 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:29,780 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] [2019-11-16 00:12:29,783 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:29,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:29,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1015206640, now seen corresponding path program 1 times [2019-11-16 00:12:29,798 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:29,799 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007362980] [2019-11-16 00:12:29,799 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:29,800 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:29,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:30,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:30,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007362980] [2019-11-16 00:12:30,300 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:30,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-16 00:12:30,301 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364755811] [2019-11-16 00:12:30,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-16 00:12:30,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:30,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-16 00:12:30,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-16 00:12:30,326 INFO L87 Difference]: Start difference. First operand 5472 states. Second operand 4 states. [2019-11-16 00:12:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:30,530 INFO L93 Difference]: Finished difference Result 5709 states and 21934 transitions. [2019-11-16 00:12:30,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-16 00:12:30,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2019-11-16 00:12:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:30,581 INFO L225 Difference]: With dead ends: 5709 [2019-11-16 00:12:30,582 INFO L226 Difference]: Without dead ends: 2393 [2019-11-16 00:12:30,583 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 [2019-11-16 00:12:30,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2393 states. [2019-11-16 00:12:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2393 to 2393. [2019-11-16 00:12:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2393 states. [2019-11-16 00:12:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2393 states to 2393 states and 8937 transitions. [2019-11-16 00:12:30,888 INFO L78 Accepts]: Start accepts. Automaton has 2393 states and 8937 transitions. Word has length 35 [2019-11-16 00:12:30,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:30,889 INFO L462 AbstractCegarLoop]: Abstraction has 2393 states and 8937 transitions. [2019-11-16 00:12:30,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-16 00:12:30,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2393 states and 8937 transitions. [2019-11-16 00:12:30,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-16 00:12:30,896 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:30,897 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] [2019-11-16 00:12:30,897 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:30,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:30,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1081566526, now seen corresponding path program 1 times [2019-11-16 00:12:30,898 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:30,898 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417214841] [2019-11-16 00:12:30,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:30,899 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:30,899 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:31,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417214841] [2019-11-16 00:12:31,049 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:31,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-16 00:12:31,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099340497] [2019-11-16 00:12:31,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-16 00:12:31,051 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:31,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-16 00:12:31,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-16 00:12:31,052 INFO L87 Difference]: Start difference. First operand 2393 states and 8937 transitions. Second operand 5 states. [2019-11-16 00:12:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:31,192 INFO L93 Difference]: Finished difference Result 2564 states and 9321 transitions. [2019-11-16 00:12:31,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-16 00:12:31,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2019-11-16 00:12:31,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:31,220 INFO L225 Difference]: With dead ends: 2564 [2019-11-16 00:12:31,221 INFO L226 Difference]: Without dead ends: 2309 [2019-11-16 00:12:31,222 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 [2019-11-16 00:12:31,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2019-11-16 00:12:31,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 2309. [2019-11-16 00:12:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2309 states. [2019-11-16 00:12:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2309 states to 2309 states and 8545 transitions. [2019-11-16 00:12:31,394 INFO L78 Accepts]: Start accepts. Automaton has 2309 states and 8545 transitions. Word has length 36 [2019-11-16 00:12:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:31,394 INFO L462 AbstractCegarLoop]: Abstraction has 2309 states and 8545 transitions. [2019-11-16 00:12:31,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-16 00:12:31,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2309 states and 8545 transitions. [2019-11-16 00:12:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-11-16 00:12:31,400 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:31,400 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] [2019-11-16 00:12:31,400 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:31,401 INFO L82 PathProgramCache]: Analyzing trace with hash -1829152475, now seen corresponding path program 1 times [2019-11-16 00:12:31,401 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:31,401 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535532117] [2019-11-16 00:12:31,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:31,402 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:31,402 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:31,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:31,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:31,539 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535532117] [2019-11-16 00:12:31,539 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:31,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-16 00:12:31,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104925501] [2019-11-16 00:12:31,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-16 00:12:31,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:31,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-16 00:12:31,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-16 00:12:31,541 INFO L87 Difference]: Start difference. First operand 2309 states and 8545 transitions. Second operand 6 states. [2019-11-16 00:12:31,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:31,845 INFO L93 Difference]: Finished difference Result 2174 states and 7681 transitions. [2019-11-16 00:12:31,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:12:31,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2019-11-16 00:12:31,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:31,867 INFO L225 Difference]: With dead ends: 2174 [2019-11-16 00:12:31,867 INFO L226 Difference]: Without dead ends: 1931 [2019-11-16 00:12:31,868 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2019-11-16 00:12:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2019-11-16 00:12:31,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1931. [2019-11-16 00:12:31,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1931 states. [2019-11-16 00:12:31,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1931 states to 1931 states and 6907 transitions. [2019-11-16 00:12:31,950 INFO L78 Accepts]: Start accepts. Automaton has 1931 states and 6907 transitions. Word has length 37 [2019-11-16 00:12:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:31,951 INFO L462 AbstractCegarLoop]: Abstraction has 1931 states and 6907 transitions. [2019-11-16 00:12:31,951 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-16 00:12:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 1931 states and 6907 transitions. [2019-11-16 00:12:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-16 00:12:31,957 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:31,957 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] [2019-11-16 00:12:31,958 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:31,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:31,958 INFO L82 PathProgramCache]: Analyzing trace with hash 567006785, now seen corresponding path program 1 times [2019-11-16 00:12:31,958 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:31,959 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174944119] [2019-11-16 00:12:31,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:31,959 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:31,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:32,108 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174944119] [2019-11-16 00:12:32,108 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:32,108 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:12:32,109 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991431954] [2019-11-16 00:12:32,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:12:32,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:32,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:12:32,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:12:32,110 INFO L87 Difference]: Start difference. First operand 1931 states and 6907 transitions. Second operand 7 states. [2019-11-16 00:12:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:32,280 INFO L93 Difference]: Finished difference Result 1364 states and 4531 transitions. [2019-11-16 00:12:32,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:12:32,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-11-16 00:12:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:32,292 INFO L225 Difference]: With dead ends: 1364 [2019-11-16 00:12:32,292 INFO L226 Difference]: Without dead ends: 1175 [2019-11-16 00:12:32,293 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:12:32,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1175 states. [2019-11-16 00:12:32,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1175 to 1175. [2019-11-16 00:12:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2019-11-16 00:12:32,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 3883 transitions. [2019-11-16 00:12:32,337 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 3883 transitions. Word has length 38 [2019-11-16 00:12:32,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:32,340 INFO L462 AbstractCegarLoop]: Abstraction has 1175 states and 3883 transitions. [2019-11-16 00:12:32,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:12:32,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 3883 transitions. [2019-11-16 00:12:32,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-16 00:12:32,344 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:32,344 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] [2019-11-16 00:12:32,344 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:32,344 INFO L82 PathProgramCache]: Analyzing trace with hash -436375220, now seen corresponding path program 1 times [2019-11-16 00:12:32,345 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:32,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654716174] [2019-11-16 00:12:32,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:32,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:32,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:32,559 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654716174] [2019-11-16 00:12:32,560 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:32,561 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-16 00:12:32,561 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653762821] [2019-11-16 00:12:32,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:12:32,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:32,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:12:32,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:12:32,564 INFO L87 Difference]: Start difference. First operand 1175 states and 3883 transitions. Second operand 8 states. [2019-11-16 00:12:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:32,723 INFO L93 Difference]: Finished difference Result 1724 states and 5776 transitions. [2019-11-16 00:12:32,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-16 00:12:32,724 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-11-16 00:12:32,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:32,733 INFO L225 Difference]: With dead ends: 1724 [2019-11-16 00:12:32,733 INFO L226 Difference]: Without dead ends: 875 [2019-11-16 00:12:32,734 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-11-16 00:12:32,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2019-11-16 00:12:32,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 875. [2019-11-16 00:12:32,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 875 states. [2019-11-16 00:12:32,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 2887 transitions. [2019-11-16 00:12:32,773 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 2887 transitions. Word has length 39 [2019-11-16 00:12:32,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:32,773 INFO L462 AbstractCegarLoop]: Abstraction has 875 states and 2887 transitions. [2019-11-16 00:12:32,773 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:12:32,774 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 2887 transitions. [2019-11-16 00:12:32,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-16 00:12:32,776 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:32,776 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] [2019-11-16 00:12:32,777 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:32,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:32,777 INFO L82 PathProgramCache]: Analyzing trace with hash 158197884, now seen corresponding path program 2 times [2019-11-16 00:12:32,778 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:32,778 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755308745] [2019-11-16 00:12:32,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:32,778 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:32,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:32,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:32,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755308745] [2019-11-16 00:12:32,987 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:32,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:12:32,988 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529989622] [2019-11-16 00:12:32,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:12:32,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:32,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:12:32,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:12:32,989 INFO L87 Difference]: Start difference. First operand 875 states and 2887 transitions. Second operand 7 states. [2019-11-16 00:12:33,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:33,217 INFO L93 Difference]: Finished difference Result 1388 states and 4669 transitions. [2019-11-16 00:12:33,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:12:33,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-16 00:12:33,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:33,226 INFO L225 Difference]: With dead ends: 1388 [2019-11-16 00:12:33,226 INFO L226 Difference]: Without dead ends: 830 [2019-11-16 00:12:33,226 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:12:33,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2019-11-16 00:12:33,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 803. [2019-11-16 00:12:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2019-11-16 00:12:33,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 2653 transitions. [2019-11-16 00:12:33,255 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 2653 transitions. Word has length 39 [2019-11-16 00:12:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:33,255 INFO L462 AbstractCegarLoop]: Abstraction has 803 states and 2653 transitions. [2019-11-16 00:12:33,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:12:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 2653 transitions. [2019-11-16 00:12:33,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-16 00:12:33,258 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:33,260 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] [2019-11-16 00:12:33,261 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1605825940, now seen corresponding path program 3 times [2019-11-16 00:12:33,261 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:33,262 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101360692] [2019-11-16 00:12:33,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:33,262 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:33,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:33,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:33,447 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101360692] [2019-11-16 00:12:33,447 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:33,448 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-16 00:12:33,448 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090986270] [2019-11-16 00:12:33,448 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-16 00:12:33,448 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:33,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-16 00:12:33,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-16 00:12:33,449 INFO L87 Difference]: Start difference. First operand 803 states and 2653 transitions. Second operand 7 states. [2019-11-16 00:12:33,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:33,731 INFO L93 Difference]: Finished difference Result 1325 states and 4456 transitions. [2019-11-16 00:12:33,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:12:33,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 39 [2019-11-16 00:12:33,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:33,738 INFO L225 Difference]: With dead ends: 1325 [2019-11-16 00:12:33,739 INFO L226 Difference]: Without dead ends: 740 [2019-11-16 00:12:33,739 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-16 00:12:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2019-11-16 00:12:33,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 731. [2019-11-16 00:12:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-11-16 00:12:33,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2461 transitions. [2019-11-16 00:12:33,766 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2461 transitions. Word has length 39 [2019-11-16 00:12:33,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:33,766 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 2461 transitions. [2019-11-16 00:12:33,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-16 00:12:33,766 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2461 transitions. [2019-11-16 00:12:33,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-16 00:12:33,769 INFO L372 BasicCegarLoop]: Found error trace [2019-11-16 00:12:33,769 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] [2019-11-16 00:12:33,769 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-16 00:12:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-16 00:12:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash -237444108, now seen corresponding path program 4 times [2019-11-16 00:12:33,770 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-16 00:12:33,770 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891277402] [2019-11-16 00:12:33,770 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:33,770 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-16 00:12:33,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-16 00:12:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-16 00:12:33,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-16 00:12:33,987 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891277402] [2019-11-16 00:12:33,987 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-16 00:12:33,987 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-16 00:12:33,987 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884681636] [2019-11-16 00:12:33,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-16 00:12:33,988 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-16 00:12:33,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-16 00:12:33,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-16 00:12:33,989 INFO L87 Difference]: Start difference. First operand 731 states and 2461 transitions. Second operand 8 states. [2019-11-16 00:12:34,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-16 00:12:34,106 INFO L93 Difference]: Finished difference Result 569 states and 1867 transitions. [2019-11-16 00:12:34,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-16 00:12:34,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 39 [2019-11-16 00:12:34,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-16 00:12:34,107 INFO L225 Difference]: With dead ends: 569 [2019-11-16 00:12:34,107 INFO L226 Difference]: Without dead ends: 0 [2019-11-16 00:12:34,107 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 [2019-11-16 00:12:34,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-16 00:12:34,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-16 00:12:34,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-16 00:12:34,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-16 00:12:34,108 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2019-11-16 00:12:34,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-16 00:12:34,108 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-16 00:12:34,108 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-16 00:12:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-16 00:12:34,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-16 00:12:34,111 INFO L303 ceAbstractionStarter]: Did not count any witness invariants because Icfg is not BoogieIcfg [2019-11-16 00:12:34,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:12:34 BasicIcfg [2019-11-16 00:12:34,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-16 00:12:34,113 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-16 00:12:34,113 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-16 00:12:34,113 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-16 00:12:34,114 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:12:29" (3/4) ... [2019-11-16 00:12:34,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-16 00:12:34,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2019-11-16 00:12:34,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2019-11-16 00:12:34,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2019-11-16 00:12:34,126 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2019-11-16 00:12:34,132 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-16 00:12:34,133 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-16 00:12:34,183 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a111fc97-ecdd-44a8-b4d9-6b2080659c79/bin/uautomizer/witness.graphml [2019-11-16 00:12:34,184 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-16 00:12:34,186 INFO L168 Benchmark]: Toolchain (without parser) took 6377.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -173.1 MB). Peak memory consumption was 29.8 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,187 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-16 00:12:34,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.96 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,188 INFO L168 Benchmark]: Boogie Preprocessor took 30.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,189 INFO L168 Benchmark]: RCFGBuilder took 668.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,189 INFO L168 Benchmark]: TraceAbstraction took 4918.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -60.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,190 INFO L168 Benchmark]: Witness Printer took 70.83 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: 9.0 MB). Peak memory consumption was 9.0 MB. Max. memory is 11.5 GB. [2019-11-16 00:12:34,193 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 633.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 122.2 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 49.96 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 668.65 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4918.28 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 80.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -60.7 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. * Witness Printer took 70.83 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: 9.0 MB). Peak memory consumption was 9.0 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, 80 locations, 1 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 480 SDtfs, 713 SDslu, 1355 SDs, 0 SdLazy, 202 SolverSat, 83 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5472occurred 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: 0.6s AutomataMinimizationTime, 8 MinimizatonAttempts, 36 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 37238 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...