./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ..................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/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 fb0b06f0fabe52e4995034e0b478ee6377b6d993 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:50:10,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:10,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:10,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:10,712 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:10,713 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:10,715 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:10,723 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:10,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:10,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:10,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:10,732 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:10,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:10,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:10,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:10,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:10,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:10,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:10,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:10,740 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:10,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:10,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:10,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:10,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:10,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:10,746 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:10,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:10,747 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:10,747 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:10,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:10,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:10,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:10,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:10,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:10,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:10,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:10,751 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:10,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:10,752 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:10,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:10,753 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:10,753 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:50:10,765 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:10,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:10,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:10,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:10,766 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:10,766 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:50:10,767 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:50:10,768 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:50:10,768 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:50:10,768 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:10,768 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:10,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:50:10,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:10,769 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:10,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:50:10,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:50:10,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:50:10,769 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:10,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:50:10,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:50:10,770 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:50:10,770 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:50:10,770 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:50:10,770 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_71f24801-389a-43b0-abac-1a7fbe59554b/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-25 08:50:10,921 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:10,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:10,933 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:10,934 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:10,935 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:10,935 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-25 08:50:10,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/a013e5787/3b504de5e2c243c6bdd83aedaa090bf6/FLAGcee1decc7 [2019-11-25 08:50:11,430 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:11,434 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-25 08:50:11,444 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/a013e5787/3b504de5e2c243c6bdd83aedaa090bf6/FLAGcee1decc7 [2019-11-25 08:50:11,778 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/a013e5787/3b504de5e2c243c6bdd83aedaa090bf6 [2019-11-25 08:50:11,780 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:11,781 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:11,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:11,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:11,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:11,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:11" (1/1) ... [2019-11-25 08:50:11,787 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1363e8dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:11, skipping insertion in model container [2019-11-25 08:50:11,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:11" (1/1) ... [2019-11-25 08:50:11,793 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:11,812 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:12,036 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:12,047 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:12,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:12,117 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:12,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12 WrapperNode [2019-11-25 08:50:12,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:12,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:12,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:12,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:12,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:12,172 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:12,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:12,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:12,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... [2019-11-25 08:50:12,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:12,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:12,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:12,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:12,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/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 [2019-11-25 08:50:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:50:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-25 08:50:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:50:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:50:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:12,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:50:12,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:50:12,819 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:12,819 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:50:12,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:12 BoogieIcfgContainer [2019-11-25 08:50:12,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:12,822 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:50:12,822 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:50:12,824 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:50:12,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:50:11" (1/3) ... [2019-11-25 08:50:12,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f727e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:12, skipping insertion in model container [2019-11-25 08:50:12,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:12" (2/3) ... [2019-11-25 08:50:12,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f727e2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:12, skipping insertion in model container [2019-11-25 08:50:12,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:12" (3/3) ... [2019-11-25 08:50:12,828 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-25 08:50:12,835 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:50:12,840 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:50:12,847 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:50:12,868 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:50:12,868 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:50:12,868 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:50:12,868 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:12,869 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:12,869 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:50:12,869 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:12,869 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:50:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-25 08:50:12,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:50:12,889 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:12,890 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:12,890 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:12,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-25 08:50:12,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:12,902 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294478477] [2019-11-25 08:50:12,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:13,003 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294478477] [2019-11-25 08:50:13,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:13,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:50:13,004 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346533010] [2019-11-25 08:50:13,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:50:13,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:50:13,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:50:13,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:50:13,020 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-25 08:50:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:13,040 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-25 08:50:13,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:50:13,042 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-25 08:50:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:13,051 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:50:13,051 INFO L226 Difference]: Without dead ends: 50 [2019-11-25 08:50:13,053 INFO L630 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 [2019-11-25 08:50:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-25 08:50:13,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-25 08:50:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-25 08:50:13,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-25 08:50:13,084 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-25 08:50:13,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:13,084 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-25 08:50:13,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:50:13,084 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-25 08:50:13,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:50:13,085 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:13,085 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:13,085 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:13,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-25 08:50:13,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:50:13,086 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537589639] [2019-11-25 08:50:13,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:50:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:50:13,154 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:50:13,154 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:50:13,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:50:13 BoogieIcfgContainer [2019-11-25 08:50:13,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:50:13,179 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:13,179 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:13,180 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:13,180 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:12" (3/4) ... [2019-11-25 08:50:13,183 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:50:13,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:13,185 INFO L168 Benchmark]: Toolchain (without parser) took 1403.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -115.6 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:13,186 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:13,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:13,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.04 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. [2019-11-25 08:50:13,187 INFO L168 Benchmark]: Boogie Preprocessor took 64.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:13,188 INFO L168 Benchmark]: RCFGBuilder took 583.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:13,189 INFO L168 Benchmark]: TraceAbstraction took 357.50 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:13,189 INFO L168 Benchmark]: Witness Printer took 4.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:13,192 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 336.17 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.04 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. * Boogie Preprocessor took 64.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 583.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 357.50 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: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 154]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 153, overapproximation of someBinaryArithmeticDOUBLEoperation at line 33, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L17] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L149] double x = 0.0; [L20] double z; [L21] __int32_t sign = 0x80000000; [L22] __uint32_t r, t1, s1, ix1, q1; [L23] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] ieee_double_shape_type ew_u; [L27] ew_u.value = (x) [L28] EXPR ew_u.parts.msw [L28] (ix0) = ew_u.parts.msw [L29] EXPR ew_u.parts.lsw [L29] (ix1) = ew_u.parts.lsw [L32] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L33] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L150] double res = __ieee754_sqrt(x); [L153] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L153] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L154] __VERIFIER_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:50:15,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:50:15,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:50:15,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:50:15,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:50:15,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:50:15,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:50:15,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:50:15,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:50:15,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:50:15,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:50:15,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:50:15,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:50:15,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:50:15,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:50:15,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:50:15,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:50:15,112 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:50:15,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:50:15,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:50:15,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:50:15,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:50:15,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:50:15,120 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:50:15,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:50:15,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:50:15,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:50:15,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:50:15,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:50:15,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:50:15,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:50:15,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:50:15,128 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:50:15,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:50:15,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:50:15,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:50:15,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:50:15,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:50:15,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:50:15,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:50:15,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:50:15,134 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:50:15,151 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:50:15,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:50:15,152 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:50:15,152 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:50:15,152 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:50:15,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:50:15,153 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:50:15,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:50:15,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:50:15,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:50:15,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:50:15,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:50:15,154 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:50:15,154 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:50:15,154 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:50:15,155 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:50:15,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:50:15,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:50:15,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:50:15,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:50:15,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:50:15,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:50:15,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:50:15,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:50:15,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:50:15,160 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:50:15,160 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:50:15,160 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:50:15,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:50:15,161 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:50:15,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:50:15,162 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_71f24801-389a-43b0-abac-1a7fbe59554b/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 -> fb0b06f0fabe52e4995034e0b478ee6377b6d993 [2019-11-25 08:50:15,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:50:15,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:50:15,436 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:50:15,438 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:50:15,439 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:50:15,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-25 08:50:15,497 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/392a8dec4/7d9435f9da004be3b7df314546ae62cd/FLAGc9aef4249 [2019-11-25 08:50:15,895 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:50:15,896 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2019-11-25 08:50:15,906 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/392a8dec4/7d9435f9da004be3b7df314546ae62cd/FLAGc9aef4249 [2019-11-25 08:50:16,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/data/392a8dec4/7d9435f9da004be3b7df314546ae62cd [2019-11-25 08:50:16,261 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:50:16,262 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:50:16,264 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:16,264 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:50:16,267 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:50:16,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24f5dc4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16, skipping insertion in model container [2019-11-25 08:50:16,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:50:16,310 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:50:16,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:16,570 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:50:16,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:50:16,736 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:50:16,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16 WrapperNode [2019-11-25 08:50:16,736 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:50:16,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:16,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:50:16,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:50:16,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:50:16,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:50:16,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:50:16,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:50:16,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,804 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,804 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,824 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... [2019-11-25 08:50:16,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:50:16,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:50:16,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:50:16,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:50:16,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/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 [2019-11-25 08:50:16,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-25 08:50:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-25 08:50:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:50:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:50:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:50:16,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:50:16,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:50:16,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:50:20,262 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:50:20,262 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-11-25 08:50:20,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:20 BoogieIcfgContainer [2019-11-25 08:50:20,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:50:20,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:50:20,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:50:20,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:50:20,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:50:16" (1/3) ... [2019-11-25 08:50:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dd6f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:20, skipping insertion in model container [2019-11-25 08:50:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:50:16" (2/3) ... [2019-11-25 08:50:20,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dd6f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:50:20, skipping insertion in model container [2019-11-25 08:50:20,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:20" (3/3) ... [2019-11-25 08:50:20,270 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2019-11-25 08:50:20,278 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:50:20,283 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:50:20,293 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:50:20,313 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:50:20,313 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:50:20,314 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:50:20,314 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:50:20,314 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:50:20,314 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:50:20,314 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:50:20,315 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:50:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2019-11-25 08:50:20,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-25 08:50:20,333 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:20,334 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:20,335 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:20,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:20,340 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2019-11-25 08:50:20,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:20,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1708391986] [2019-11-25 08:50:20,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:20,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:50:20,682 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:20,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:20,691 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:20,701 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1708391986] [2019-11-25 08:50:20,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:20,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:50:20,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962131365] [2019-11-25 08:50:20,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:50:20,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:20,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:50:20,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:50:20,720 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2019-11-25 08:50:20,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:20,742 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2019-11-25 08:50:20,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:50:20,743 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2019-11-25 08:50:20,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:20,753 INFO L225 Difference]: With dead ends: 104 [2019-11-25 08:50:20,753 INFO L226 Difference]: Without dead ends: 50 [2019-11-25 08:50:20,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:50:20,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-25 08:50:20,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-11-25 08:50:20,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-11-25 08:50:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2019-11-25 08:50:20,792 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2019-11-25 08:50:20,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:20,792 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2019-11-25 08:50:20,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:50:20,792 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2019-11-25 08:50:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-25 08:50:20,793 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:20,793 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:21,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:50:21,010 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:21,010 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2019-11-25 08:50:21,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:21,011 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249223065] [2019-11-25 08:50:21,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:21,375 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:50:21,377 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:21,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:21,426 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:21,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:21,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249223065] [2019-11-25 08:50:21,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:21,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:50:21,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133552901] [2019-11-25 08:50:21,473 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:50:21,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:21,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:50:21,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:50:21,474 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand 6 states. [2019-11-25 08:50:22,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:22,712 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2019-11-25 08:50:22,713 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:50:22,714 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2019-11-25 08:50:22,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:22,715 INFO L225 Difference]: With dead ends: 105 [2019-11-25 08:50:22,715 INFO L226 Difference]: Without dead ends: 63 [2019-11-25 08:50:22,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:50:22,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-25 08:50:22,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2019-11-25 08:50:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:50:22,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2019-11-25 08:50:22,728 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2019-11-25 08:50:22,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:22,729 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2019-11-25 08:50:22,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:50:22,730 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2019-11-25 08:50:22,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:50:22,730 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:22,730 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:22,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:50:22,952 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:22,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:22,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2019-11-25 08:50:22,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:22,953 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216001020] [2019-11-25 08:50:22,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:23,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:50:23,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:23,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:23,082 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:23,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:23,121 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216001020] [2019-11-25 08:50:23,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:23,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-25 08:50:23,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634883428] [2019-11-25 08:50:23,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:50:23,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:23,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:50:23,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:50:23,123 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand 7 states. [2019-11-25 08:50:23,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:23,279 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2019-11-25 08:50:23,282 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:50:23,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2019-11-25 08:50:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:23,283 INFO L225 Difference]: With dead ends: 63 [2019-11-25 08:50:23,283 INFO L226 Difference]: Without dead ends: 60 [2019-11-25 08:50:23,284 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:50:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-11-25 08:50:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2019-11-25 08:50:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-11-25 08:50:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2019-11-25 08:50:23,291 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2019-11-25 08:50:23,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:23,291 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2019-11-25 08:50:23,292 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:50:23,292 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2019-11-25 08:50:23,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:50:23,292 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:23,293 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:23,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:50:23,513 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2019-11-25 08:50:23,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:23,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938075073] [2019-11-25 08:50:23,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:23,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-25 08:50:23,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:23,685 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:23,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:23,714 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:23,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-25 08:50:23,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:23,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938075073] [2019-11-25 08:50:23,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:23,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2019-11-25 08:50:23,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181656887] [2019-11-25 08:50:23,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-25 08:50:23,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:23,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-25 08:50:23,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-11-25 08:50:23,937 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand 14 states. [2019-11-25 08:50:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:24,290 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2019-11-25 08:50:24,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-25 08:50:24,291 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 15 [2019-11-25 08:50:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:24,292 INFO L225 Difference]: With dead ends: 60 [2019-11-25 08:50:24,292 INFO L226 Difference]: Without dead ends: 51 [2019-11-25 08:50:24,293 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2019-11-25 08:50:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-25 08:50:24,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-25 08:50:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:50:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2019-11-25 08:50:24,298 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2019-11-25 08:50:24,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:24,299 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2019-11-25 08:50:24,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-25 08:50:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2019-11-25 08:50:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-25 08:50:24,300 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:24,300 INFO L410 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] [2019-11-25 08:50:24,505 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:50:24,505 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:24,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:24,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2019-11-25 08:50:24,506 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:24,506 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812402519] [2019-11-25 08:50:24,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:24,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:50:24,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:24,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:24,645 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:24,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:50:24,699 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812402519] [2019-11-25 08:50:24,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:24,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:50:24,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812416578] [2019-11-25 08:50:24,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:50:24,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:24,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:50:24,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:50:24,701 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand 8 states. [2019-11-25 08:50:25,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:25,102 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2019-11-25 08:50:25,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:50:25,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2019-11-25 08:50:25,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:25,104 INFO L225 Difference]: With dead ends: 87 [2019-11-25 08:50:25,104 INFO L226 Difference]: Without dead ends: 52 [2019-11-25 08:50:25,105 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:50:25,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-11-25 08:50:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2019-11-25 08:50:25,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-25 08:50:25,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2019-11-25 08:50:25,110 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2019-11-25 08:50:25,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:25,111 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2019-11-25 08:50:25,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:50:25,111 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2019-11-25 08:50:25,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-25 08:50:25,112 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:25,112 INFO L410 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] [2019-11-25 08:50:25,327 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-25 08:50:25,327 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:25,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2019-11-25 08:50:25,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:25,328 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921101762] [2019-11-25 08:50:25,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:25,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,433 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,435 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:50:25,449 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:25,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:50:25,458 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1921101762] [2019-11-25 08:50:25,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:25,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-11-25 08:50:25,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073417134] [2019-11-25 08:50:25,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:50:25,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:25,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:50:25,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:50:25,460 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand 4 states. [2019-11-25 08:50:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:25,526 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2019-11-25 08:50:25,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:50:25,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-11-25 08:50:25,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:25,529 INFO L225 Difference]: With dead ends: 84 [2019-11-25 08:50:25,529 INFO L226 Difference]: Without dead ends: 55 [2019-11-25 08:50:25,529 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:50:25,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-11-25 08:50:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-11-25 08:50:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-11-25 08:50:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2019-11-25 08:50:25,535 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2019-11-25 08:50:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:25,535 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2019-11-25 08:50:25,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:50:25,536 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2019-11-25 08:50:25,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:50:25,540 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:25,541 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:25,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-11-25 08:50:25,743 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:25,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:25,744 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2019-11-25 08:50:25,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:25,745 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291194924] [2019-11-25 08:50:25,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:25,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:50:25,876 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:25,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:50:25,894 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:25,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-25 08:50:25,937 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291194924] [2019-11-25 08:50:25,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:25,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-11-25 08:50:25,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498227542] [2019-11-25 08:50:25,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:50:25,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:25,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:50:25,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:50:25,938 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand 8 states. [2019-11-25 08:50:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,065 INFO L93 Difference]: Finished difference Result 96 states and 130 transitions. [2019-11-25 08:50:26,067 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:50:26,068 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-11-25 08:50:26,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,069 INFO L225 Difference]: With dead ends: 96 [2019-11-25 08:50:26,069 INFO L226 Difference]: Without dead ends: 67 [2019-11-25 08:50:26,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:50:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-11-25 08:50:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2019-11-25 08:50:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2019-11-25 08:50:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2019-11-25 08:50:26,076 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 38 [2019-11-25 08:50:26,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,079 INFO L462 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2019-11-25 08:50:26,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:50:26,079 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2019-11-25 08:50:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-25 08:50:26,086 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:26,086 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:26,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-11-25 08:50:26,305 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:26,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1788073277, now seen corresponding path program 2 times [2019-11-25 08:50:26,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:26,306 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [430225844] [2019-11-25 08:50:26,306 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:26,405 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-25 08:50:26,405 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:26,414 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,416 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-25 08:50:26,459 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-25 08:50:26,486 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [430225844] [2019-11-25 08:50:26,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:26,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:50:26,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426004730] [2019-11-25 08:50:26,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:50:26,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:50:26,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:50:26,488 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand 6 states. [2019-11-25 08:50:26,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:26,592 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2019-11-25 08:50:26,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-25 08:50:26,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2019-11-25 08:50:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:26,594 INFO L225 Difference]: With dead ends: 96 [2019-11-25 08:50:26,594 INFO L226 Difference]: Without dead ends: 75 [2019-11-25 08:50:26,595 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:50:26,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2019-11-25 08:50:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2019-11-25 08:50:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-11-25 08:50:26,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2019-11-25 08:50:26,603 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 50 [2019-11-25 08:50:26,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:26,604 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2019-11-25 08:50:26,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:50:26,604 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2019-11-25 08:50:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-11-25 08:50:26,605 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:26,605 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:26,818 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-11-25 08:50:26,818 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:26,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 1 times [2019-11-25 08:50:26,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:26,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108991818] [2019-11-25 08:50:26,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:26,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:50:26,946 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:50:26,948 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,029 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:50:27,030 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:27,141 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-25 08:50:27,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108991818] [2019-11-25 08:50:27,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:50:27,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-25 08:50:27,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206120644] [2019-11-25 08:50:27,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-25 08:50:27,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-25 08:50:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:50:27,143 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 16 states. [2019-11-25 08:50:27,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:27,450 INFO L93 Difference]: Finished difference Result 136 states and 188 transitions. [2019-11-25 08:50:27,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-25 08:50:27,451 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 56 [2019-11-25 08:50:27,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:27,452 INFO L225 Difference]: With dead ends: 136 [2019-11-25 08:50:27,453 INFO L226 Difference]: Without dead ends: 99 [2019-11-25 08:50:27,453 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2019-11-25 08:50:27,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-11-25 08:50:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2019-11-25 08:50:27,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-25 08:50:27,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2019-11-25 08:50:27,475 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 56 [2019-11-25 08:50:27,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:27,475 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2019-11-25 08:50:27,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-25 08:50:27,476 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2019-11-25 08:50:27,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-11-25 08:50:27,478 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:50:27,478 INFO L410 BasicCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:50:27,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-11-25 08:50:27,689 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:50:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:50:27,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1054865405, now seen corresponding path program 2 times [2019-11-25 08:50:27,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:50:27,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589381066] [2019-11-25 08:50:27,690 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-11-25 08:50:27,815 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-25 08:50:27,816 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:50:27,823 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-25 08:50:27,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:50:27,881 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 56 [2019-11-25 08:50:27,897 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-25 08:50:27,902 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 58 [2019-11-25 08:50:27,903 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:27,925 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:27,937 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2019-11-25 08:50:27,938 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:27,963 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:27,969 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:27,970 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 20 [2019-11-25 08:50:27,971 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:27,978 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:27,978 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:50:27,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:27,993 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:50:27,993 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:32 [2019-11-25 08:50:28,026 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-11-25 08:50:28,027 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:50:28,087 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,087 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 66 treesize of output 68 [2019-11-25 08:50:28,141 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,141 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 9 case distinctions, treesize of input 56 treesize of output 71 [2019-11-25 08:50:28,142 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:28,177 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,188 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 24 [2019-11-25 08:50:28,188 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:28,215 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,223 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,223 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 25 [2019-11-25 08:50:28,224 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-25 08:50:28,239 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,239 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:50:28,261 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:50:28,262 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:50:28,262 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:76, output treesize:33 [2019-11-25 08:50:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 293 trivial. 0 not checked. [2019-11-25 08:50:28,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589381066] [2019-11-25 08:50:28,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:50:28,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-25 08:50:28,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689577055] [2019-11-25 08:50:28,300 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:50:28,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:50:28,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:50:28,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:50:28,301 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand 6 states. [2019-11-25 08:50:28,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:50:28,350 INFO L93 Difference]: Finished difference Result 99 states and 130 transitions. [2019-11-25 08:50:28,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:50:28,351 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 80 [2019-11-25 08:50:28,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:50:28,352 INFO L225 Difference]: With dead ends: 99 [2019-11-25 08:50:28,352 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:50:28,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:50:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:50:28,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:50:28,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:50:28,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:50:28,353 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2019-11-25 08:50:28,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:50:28,353 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:50:28,353 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:50:28,354 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:50:28,354 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:50:28,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-11-25 08:50:28,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:50:28,752 INFO L440 ceAbstractionStarter]: At program point L126(lines 19 127) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L85(lines 85 94) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L85-2(lines 85 94) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L44(lines 44 55) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L44-2(lines 44 55) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L102(lines 102 113) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 41) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L440 ceAbstractionStarter]: At program point L69-2(lines 69 79) the Hoare annotation is: false [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L36-2(lines 36 41) no Hoare annotation was computed. [2019-11-25 08:50:28,752 INFO L444 ceAbstractionStarter]: For program point L69-3(lines 69 79) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L440 ceAbstractionStarter]: At program point L45-2(lines 45 49) the Hoare annotation is: false [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L45-3(lines 45 49) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L37(lines 37 40) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L153(line 153) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L87(lines 87 88) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L120-1(lines 120 125) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L153-2(lines 153 156) no Hoare annotation was computed. [2019-11-25 08:50:28,753 INFO L440 ceAbstractionStarter]: At program point L120-2(lines 120 125) the Hoare annotation is: false [2019-11-25 08:50:28,753 INFO L444 ceAbstractionStarter]: For program point L87-2(lines 87 88) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L120-3(lines 120 125) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L104(lines 104 112) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L71(lines 71 75) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L71-2(lines 71 75) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L154(line 154) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L440 ceAbstractionStarter]: At program point L138(lines 129 139) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)) (= ULTIMATE.start___signbit_double_~msw~0 ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L39(lines 39 40) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L90(lines 90 91) no Hoare annotation was computed. [2019-11-25 08:50:28,754 INFO L444 ceAbstractionStarter]: For program point L90-2(lines 90 91) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 154) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 98) the Hoare annotation is: false [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 19 127) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L107(lines 107 112) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L132-1(lines 132 136) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L440 ceAbstractionStarter]: At program point L132-2(lines 132 136) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= ULTIMATE.start_main_~res~0 (_ +zero 11 53)) |ULTIMATE.start_main_#t~short11| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= |ULTIMATE.start___ieee754_sqrt_#res| (_ +zero 11 53))) [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L132-3(lines 132 136) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 61) no Hoare annotation was computed. [2019-11-25 08:50:28,755 INFO L444 ceAbstractionStarter]: For program point L25-1(lines 25 30) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L58-2(lines 58 61) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L440 ceAbstractionStarter]: At program point L25-2(lines 25 30) the Hoare annotation is: (and (= (bvadd ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (_ bv0 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L25-3(lines 19 127) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L50-2(lines 50 51) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L440 ceAbstractionStarter]: At program point L50-3(lines 50 51) the Hoare annotation is: false [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L50-4(lines 50 51) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L108(lines 108 109) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L108-2(lines 108 109) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L100(lines 100 114) no Hoare annotation was computed. [2019-11-25 08:50:28,756 INFO L447 ceAbstractionStarter]: At program point L158(lines 141 159) the Hoare annotation is: true [2019-11-25 08:50:28,756 INFO L444 ceAbstractionStarter]: For program point L117(lines 117 118) no Hoare annotation was computed. [2019-11-25 08:50:28,757 INFO L444 ceAbstractionStarter]: For program point L117-2(lines 117 118) no Hoare annotation was computed. [2019-11-25 08:50:28,763 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,765 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,765 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,765 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,772 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,773 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:50:28 BoogieIcfgContainer [2019-11-25 08:50:28,781 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:50:28,781 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:50:28,781 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:50:28,781 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:50:28,782 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:50:20" (3/4) ... [2019-11-25 08:50:28,785 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:50:28,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-25 08:50:28,799 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:50:28,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:50:28,823 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() [2019-11-25 08:50:28,824 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-25 08:50:28,825 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() [2019-11-25 08:50:28,862 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_71f24801-389a-43b0-abac-1a7fbe59554b/bin/uautomizer/witness.graphml [2019-11-25 08:50:28,862 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:50:28,863 INFO L168 Benchmark]: Toolchain (without parser) took 12600.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.9 MB). Free memory was 956.4 MB in the beginning and 1.0 GB in the end (delta: -47.2 MB). Peak memory consumption was 166.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:28,863 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:28,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:28,864 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:28,864 INFO L168 Benchmark]: Boogie Preprocessor took 36.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:50:28,865 INFO L168 Benchmark]: RCFGBuilder took 3435.53 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:28,865 INFO L168 Benchmark]: TraceAbstraction took 8516.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.7 MB). Peak memory consumption was 156.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:28,866 INFO L168 Benchmark]: Witness Printer took 80.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:50:28,867 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 473.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.3 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -191.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 54.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.36 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 3435.53 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8516.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 55.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 100.7 MB). Peak memory consumption was 156.2 MB. Max. memory is 11.5 GB. * Witness Printer took 80.80 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 154]: 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 - InvariantResult [Line: 50]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 129]: Loop Invariant [2019-11-25 08:50:28,873 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,874 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,875 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,875 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,875 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2019-11-25 08:50:28,876 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE() && msw == v_skolemized_q#valueAsBitvector_6[63:32]) && \result == 0bv32) && ~Pluszero~LONGDOUBLE() == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 120]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ~bvadd64(sign, 2147483648bv32) == 0bv32 && ~Pluszero~LONGDOUBLE() == x - InvariantResult [Line: 132]: Loop Invariant Derived loop invariant: (((~Pluszero~LONGDOUBLE() == x && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 69]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && \result == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 141]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 1 error locations. Result: SAFE, OverallTime: 8.4s, OverallIterations: 10, TraceHistogramMax: 14, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, HoareTripleCheckerStatistics: 545 SDtfs, 695 SDslu, 1361 SDs, 0 SdLazy, 499 SolverSat, 58 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 648 GetRequests, 574 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 68 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 326 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 632 ConstructedInterpolants, 26 QuantifiedInterpolants, 82481 SizeOfPredicates, 39 NumberOfNonLiveVariables, 716 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 706/818 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...