./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.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_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ......................................................................................................................................................................................................................................................................................... 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_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 69b156b7cb8e47e9e9902f33725c5b7467b2d17a ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 08:54:51,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:51,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:51,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:51,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:51,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:51,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:52,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:52,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:52,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:52,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:52,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:52,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:52,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:52,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:52,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:52,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:52,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:52,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:52,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:52,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:52,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:52,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:52,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:52,040 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:52,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:52,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:52,042 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:52,043 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:52,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:52,044 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:52,045 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:52,046 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:52,047 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:52,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:52,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:52,049 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:52,049 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:52,049 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:52,050 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:52,051 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:52,052 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-25 08:54:52,077 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:52,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:52,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:52,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:52,088 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:52,088 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:52,088 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:52,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:54:52,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:52,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:52,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:52,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:52,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:52,090 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:52,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:52,090 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:52,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:52,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:52,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:52,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:52,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:52,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:52,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:52,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:52,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:52,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:54:52,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-25 08:54:52,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:52,094 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_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-25 08:54:52,263 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:52,273 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:52,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:52,277 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:52,278 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:52,278 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-25 08:54:52,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/b07a88bbc/6dddf513e9b04eabb2292a5da5d16ea3/FLAG44cc5160a [2019-11-25 08:54:52,724 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:52,725 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-25 08:54:52,730 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/b07a88bbc/6dddf513e9b04eabb2292a5da5d16ea3/FLAG44cc5160a [2019-11-25 08:54:53,134 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/b07a88bbc/6dddf513e9b04eabb2292a5da5d16ea3 [2019-11-25 08:54:53,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:53,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:53,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:53,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:53,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:53,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f972c20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53, skipping insertion in model container [2019-11-25 08:54:53,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:53,170 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:53,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:53,442 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:53,495 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:53,514 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:53,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53 WrapperNode [2019-11-25 08:54:53,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:53,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:53,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:53,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:53,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,534 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:53,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:53,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:53,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:53,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... [2019-11-25 08:54:53,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:53,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:53,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:53,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:53,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:54:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-25 08:54:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-25 08:54:53,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-25 08:54:53,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:53,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-25 08:54:53,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:53,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:53,959 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:53,959 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-25 08:54:53,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:53 BoogieIcfgContainer [2019-11-25 08:54:53,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:53,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:53,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:53,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:53,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:53" (1/3) ... [2019-11-25 08:54:53,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446f961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:53, skipping insertion in model container [2019-11-25 08:54:53,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:53" (2/3) ... [2019-11-25 08:54:53,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446f961c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:53, skipping insertion in model container [2019-11-25 08:54:53,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:53" (3/3) ... [2019-11-25 08:54:53,967 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-25 08:54:53,976 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:53,982 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:54:53,991 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:54:54,025 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:54,025 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:54,025 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:54,026 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:54,026 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:54,026 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:54,026 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:54,026 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-25 08:54:54,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:54:54,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:54,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:54,061 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-25 08:54:54,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:54,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824683286] [2019-11-25 08:54:54,072 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:54,161 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 08:54:54,162 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824683286] [2019-11-25 08:54:54,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:54,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:54:54,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994622583] [2019-11-25 08:54:54,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:54:54,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:54:54,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:54:54,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:54,179 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-25 08:54:54,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:54,196 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-25 08:54:54,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:54:54,197 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-25 08:54:54,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:54,207 INFO L225 Difference]: With dead ends: 74 [2019-11-25 08:54:54,208 INFO L226 Difference]: Without dead ends: 35 [2019-11-25 08:54:54,211 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 08:54:54,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-25 08:54:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-25 08:54:54,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:54:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-25 08:54:54,244 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-25 08:54:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:54,244 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-25 08:54:54,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:54:54,245 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-25 08:54:54,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:54:54,245 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:54,246 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:54,246 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:54,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:54,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-25 08:54:54,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:54:54,247 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719982094] [2019-11-25 08:54:54,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:54:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:54,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:54:54,325 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:54:54,325 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-25 08:54:54,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:54:54 BoogieIcfgContainer [2019-11-25 08:54:54,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:54:54,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:54:54,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:54:54,351 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:54:54,352 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:53" (3/4) ... [2019-11-25 08:54:54,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-25 08:54:54,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:54:54,357 INFO L168 Benchmark]: Toolchain (without parser) took 1219.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -136.3 MB). Peak memory consumption was 5.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:54,358 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 08:54:54,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:54,359 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.60 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 08:54:54,360 INFO L168 Benchmark]: Boogie Preprocessor took 38.62 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 08:54:54,360 INFO L168 Benchmark]: RCFGBuilder took 364.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:54,361 INFO L168 Benchmark]: TraceAbstraction took 389.17 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:54,361 INFO L168 Benchmark]: Witness Printer took 4.58 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 08:54:54,364 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 377.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -190.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 41.60 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 38.62 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 364.14 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 389.17 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: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Witness Printer took 4.58 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: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L26] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 53 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=38occurred 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, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 08:54:56,153 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:54:56,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:54:56,172 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:54:56,172 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:54:56,174 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:54:56,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:54:56,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:54:56,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:54:56,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:54:56,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:54:56,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:54:56,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:54:56,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:54:56,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:54:56,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:54:56,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:54:56,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:54:56,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:54:56,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:54:56,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:54:56,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:54:56,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:54:56,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:54:56,223 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:54:56,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:54:56,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:54:56,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:54:56,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:54:56,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:54:56,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:54:56,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:54:56,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:54:56,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:54:56,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:54:56,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:54:56,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:54:56,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:54:56,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:54:56,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:54:56,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:54:56,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-25 08:54:56,260 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:54:56,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:54:56,263 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:54:56,263 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:54:56,264 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:54:56,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:54:56,264 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:54:56,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:54:56,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:54:56,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-25 08:54:56,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:54:56,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-25 08:54:56,267 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:54:56,267 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:54:56,267 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:54:56,267 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:54:56,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:54:56,268 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:54:56,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-25 08:54:56,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:54:56,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:54:56,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:54:56,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:54:56,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:54:56,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:54:56,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:54:56,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-25 08:54:56,270 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:54:56,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:54:56,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-25 08:54:56,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:54:56,271 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_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 -> 69b156b7cb8e47e9e9902f33725c5b7467b2d17a [2019-11-25 08:54:56,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:54:56,620 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:54:56,624 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:54:56,625 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:54:56,626 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:54:56,627 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-25 08:54:56,682 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/f49a731dc/8cd212759f364bc38830748b22c4fe45/FLAGc2b797603 [2019-11-25 08:54:57,077 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:54:57,078 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2019-11-25 08:54:57,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/f49a731dc/8cd212759f364bc38830748b22c4fe45/FLAGc2b797603 [2019-11-25 08:54:57,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/data/f49a731dc/8cd212759f364bc38830748b22c4fe45 [2019-11-25 08:54:57,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:54:57,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:54:57,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:57,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:54:57,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:54:57,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,444 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@456f0b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57, skipping insertion in model container [2019-11-25 08:54:57,444 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:54:57,479 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:54:57,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:57,727 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:54:57,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:54:57,882 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:54:57,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57 WrapperNode [2019-11-25 08:54:57,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:54:57,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:57,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:54:57,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:54:57,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,903 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,924 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:54:57,924 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:54:57,924 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:54:57,924 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:54:57,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,951 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,960 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... [2019-11-25 08:54:57,965 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:54:57,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:54:57,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:54:57,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:54:57,967 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:54:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-25 08:54:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-25 08:54:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:54:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:54:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:54:58,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:54:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:54:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:54:59,131 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:54:59,131 INFO L284 CfgBuilder]: Removed 14 assume(true) statements. [2019-11-25 08:54:59,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:59 BoogieIcfgContainer [2019-11-25 08:54:59,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:54:59,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:54:59,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:54:59,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:54:59,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:54:57" (1/3) ... [2019-11-25 08:54:59,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e41019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:59, skipping insertion in model container [2019-11-25 08:54:59,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:54:57" (2/3) ... [2019-11-25 08:54:59,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e41019c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:54:59, skipping insertion in model container [2019-11-25 08:54:59,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:59" (3/3) ... [2019-11-25 08:54:59,139 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2019-11-25 08:54:59,148 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:54:59,154 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-25 08:54:59,164 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-25 08:54:59,182 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:54:59,183 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-25 08:54:59,183 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:54:59,183 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:54:59,183 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:54:59,183 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:54:59,183 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:54:59,184 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:54:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-11-25 08:54:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-25 08:54:59,201 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:59,202 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:59,203 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:59,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:59,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2019-11-25 08:54:59,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:59,217 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955488517] [2019-11-25 08:54:59,217 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:54:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:59,296 INFO L255 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-25 08:54:59,301 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:59,312 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 08:54:59,313 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:59,316 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 08:54:59,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955488517] [2019-11-25 08:54:59,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:59,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:54:59,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044649528] [2019-11-25 08:54:59,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-25 08:54:59,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:59,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-25 08:54:59,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-25 08:54:59,336 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2019-11-25 08:54:59,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:54:59,352 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2019-11-25 08:54:59,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:54:59,353 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-11-25 08:54:59,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:54:59,364 INFO L225 Difference]: With dead ends: 74 [2019-11-25 08:54:59,364 INFO L226 Difference]: Without dead ends: 35 [2019-11-25 08:54:59,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 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 08:54:59,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-25 08:54:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2019-11-25 08:54:59,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-25 08:54:59,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-11-25 08:54:59,396 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2019-11-25 08:54:59,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:54:59,396 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-11-25 08:54:59,396 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-25 08:54:59,396 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2019-11-25 08:54:59,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-25 08:54:59,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:54:59,397 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:54:59,599 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-25 08:54:59,599 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:54:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:54:59,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2019-11-25 08:54:59,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:54:59,600 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692136412] [2019-11-25 08:54:59,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:54:59,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:54:59,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-25 08:54:59,703 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:54:59,801 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 08:54:59,801 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:59,872 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 08:54:59,872 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692136412] [2019-11-25 08:54:59,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:54:59,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-25 08:54:59,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463446342] [2019-11-25 08:54:59,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-25 08:54:59,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:54:59,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-25 08:54:59,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:54:59,875 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2019-11-25 08:55:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:00,342 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2019-11-25 08:55:00,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:55:00,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-25 08:55:00,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:00,346 INFO L225 Difference]: With dead ends: 59 [2019-11-25 08:55:00,346 INFO L226 Difference]: Without dead ends: 34 [2019-11-25 08:55:00,347 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-25 08:55:00,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-11-25 08:55:00,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2019-11-25 08:55:00,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:55:00,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-11-25 08:55:00,357 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2019-11-25 08:55:00,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:00,357 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-11-25 08:55:00,357 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-25 08:55:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-11-25 08:55:00,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-25 08:55:00,362 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:00,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:00,567 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-25 08:55:00,567 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:00,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:00,568 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2019-11-25 08:55:00,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:00,569 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [368946250] [2019-11-25 08:55:00,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:55:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:00,717 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-25 08:55:00,718 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:00,789 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 08:55:00,790 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:01,595 WARN L192 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2019-11-25 08:55:01,845 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 08:55:01,846 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [368946250] [2019-11-25 08:55:01,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:01,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-25 08:55:01,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96634949] [2019-11-25 08:55:01,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:55:01,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:01,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:55:01,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:55:01,848 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2019-11-25 08:55:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:02,470 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2019-11-25 08:55:02,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-25 08:55:02,480 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2019-11-25 08:55:02,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:02,481 INFO L225 Difference]: With dead ends: 34 [2019-11-25 08:55:02,481 INFO L226 Difference]: Without dead ends: 22 [2019-11-25 08:55:02,481 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:55:02,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-25 08:55:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-25 08:55:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-25 08:55:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2019-11-25 08:55:02,486 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2019-11-25 08:55:02,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:02,486 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2019-11-25 08:55:02,487 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:55:02,487 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2019-11-25 08:55:02,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-25 08:55:02,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:55:02,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:55:02,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-25 08:55:02,688 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-25 08:55:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:55:02,689 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2019-11-25 08:55:02,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:55:02,690 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693208254] [2019-11-25 08:55:02,690 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/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 08:55:02,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:55:02,846 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:55:02,848 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:55:02,891 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 08:55:02,905 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-25 08:55:02,919 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 2 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 08:55:02,920 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:02,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:02,959 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 35 treesize of output 19 [2019-11-25 08:55:02,960 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:02,978 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:02,991 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:02,991 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 08:55:02,992 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:03,011 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,011 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 08:55:03,032 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,033 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 08:55:03,034 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:72, output treesize:29 [2019-11-25 08:55:03,098 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 08:55:03,098 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:55:03,207 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,208 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49 treesize of output 54 [2019-11-25 08:55:03,224 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 19 treesize of output 11 [2019-11-25 08:55:03,225 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:03,240 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,248 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,248 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 28 treesize of output 16 [2019-11-25 08:55:03,249 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-25 08:55:03,252 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,252 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:55:03,265 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:55:03,266 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 08:55:03,266 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:68, output treesize:26 [2019-11-25 08:55:03,733 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 08:55:03,733 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693208254] [2019-11-25 08:55:03,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:55:03,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 2] imperfect sequences [] total 5 [2019-11-25 08:55:03,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431655658] [2019-11-25 08:55:03,734 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-25 08:55:03,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:55:03,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-25 08:55:03,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:55:03,735 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 5 states. [2019-11-25 08:55:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:55:03,737 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-11-25 08:55:03,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-25 08:55:03,737 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2019-11-25 08:55:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:55:03,738 INFO L225 Difference]: With dead ends: 22 [2019-11-25 08:55:03,738 INFO L226 Difference]: Without dead ends: 0 [2019-11-25 08:55:03,738 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-25 08:55:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-25 08:55:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-25 08:55:03,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-25 08:55:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-25 08:55:03,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2019-11-25 08:55:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:55:03,740 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-25 08:55:03,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-25 08:55:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-25 08:55:03,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-25 08:55:03,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-25 08:55:03,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-25 08:55:04,011 INFO L444 ceAbstractionStarter]: For program point L27(lines 27 46) no Hoare annotation was computed. [2019-11-25 08:55:04,011 INFO L444 ceAbstractionStarter]: For program point L19-1(lines 19 24) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L440 ceAbstractionStarter]: At program point L19-2(lines 19 24) the Hoare annotation is: false [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point L19-3(lines 19 24) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point L102(line 102) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point L102-2(lines 102 105) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-25 08:55:04,012 INFO L444 ceAbstractionStarter]: For program point L28(lines 28 35) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L103(line 103) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L70(lines 70 75) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L70-1(lines 16 77) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L70-2(lines 70 75) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L62(lines 62 63) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L29(lines 29 34) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L62-2(lines 62 63) no Hoare annotation was computed. [2019-11-25 08:55:04,013 INFO L444 ceAbstractionStarter]: For program point L54(lines 54 55) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L38(lines 38 39) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L440 ceAbstractionStarter]: At program point L88(lines 79 89) the Hoare annotation is: false [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L47(lines 47 69) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L31(lines 31 34) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L56(lines 56 68) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L48(lines 48 51) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L40(lines 40 45) no Hoare annotation was computed. [2019-11-25 08:55:04,014 INFO L444 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2019-11-25 08:55:04,015 INFO L444 ceAbstractionStarter]: For program point L57(lines 57 66) no Hoare annotation was computed. [2019-11-25 08:55:04,015 INFO L444 ceAbstractionStarter]: For program point L57-1(lines 57 66) no Hoare annotation was computed. [2019-11-25 08:55:04,016 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 103) no Hoare annotation was computed. [2019-11-25 08:55:04,016 INFO L444 ceAbstractionStarter]: For program point L82-1(lines 82 86) no Hoare annotation was computed. [2019-11-25 08:55:04,016 INFO L440 ceAbstractionStarter]: At program point L82-2(lines 82 86) the Hoare annotation is: false [2019-11-25 08:55:04,016 INFO L444 ceAbstractionStarter]: For program point L82-3(lines 82 86) no Hoare annotation was computed. [2019-11-25 08:55:04,016 INFO L447 ceAbstractionStarter]: At program point L107(lines 91 108) the Hoare annotation is: true [2019-11-25 08:55:04,017 INFO L444 ceAbstractionStarter]: For program point L41(lines 41 42) no Hoare annotation was computed. [2019-11-25 08:55:04,017 INFO L444 ceAbstractionStarter]: For program point L41-2(lines 41 42) no Hoare annotation was computed. [2019-11-25 08:55:04,017 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-25 08:55:04,017 INFO L444 ceAbstractionStarter]: For program point L58(lines 58 65) no Hoare annotation was computed. [2019-11-25 08:55:04,017 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 69) no Hoare annotation was computed. [2019-11-25 08:55:04,018 INFO L440 ceAbstractionStarter]: At program point L76(lines 16 77) the Hoare annotation is: false [2019-11-25 08:55:04,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:55:04 BoogieIcfgContainer [2019-11-25 08:55:04,028 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-25 08:55:04,028 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:55:04,028 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:55:04,028 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:55:04,029 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:54:59" (3/4) ... [2019-11-25 08:55:04,032 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-25 08:55:04,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2019-11-25 08:55:04,048 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-11-25 08:55:04,049 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-25 08:55:04,115 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d59bc1c2-c6e7-4da7-a85a-cfb942d454a2/bin/uautomizer/witness.graphml [2019-11-25 08:55:04,116 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:55:04,117 INFO L168 Benchmark]: Toolchain (without parser) took 6685.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 960.4 MB in the beginning and 906.6 MB in the end (delta: 53.8 MB). Peak memory consumption was 149.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:04,117 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:04,118 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:04,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:04,119 INFO L168 Benchmark]: Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:04,119 INFO L168 Benchmark]: RCFGBuilder took 1167.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:04,119 INFO L168 Benchmark]: TraceAbstraction took 4894.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 906.6 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. [2019-11-25 08:55:04,120 INFO L168 Benchmark]: Witness Printer took 87.74 ms. Allocated memory is still 1.1 GB. Free memory is still 906.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:55:04,122 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 446.08 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 95.4 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -130.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.67 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.27 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1167.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.8 MB). Peak memory consumption was 33.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4894.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 906.6 MB in the end (delta: 143.6 MB). Peak memory consumption was 143.6 MB. Max. memory is 11.5 GB. * Witness Printer took 87.74 ms. Allocated memory is still 1.1 GB. Free memory is still 906.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 103]: 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: 82]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 79]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 123 SDslu, 47 SDs, 0 SdLazy, 27 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 4 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 5 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 102 ConstructedInterpolants, 12 QuantifiedInterpolants, 8214 SizeOfPredicates, 15 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...