./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 c87f23af740954e6de1a94dd09957e85cd60c58b ....................................................................................................................................................................................................................... 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_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 c87f23af740954e6de1a94dd09957e85cd60c58b ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 04:26:57,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:26:57,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:26:57,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:26:57,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:26:57,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:26:57,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:26:57,057 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:26:57,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:26:57,061 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:26:57,062 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:26:57,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:26:57,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:26:57,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:26:57,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:26:57,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:26:57,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:26:57,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:26:57,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:26:57,076 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:26:57,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:26:57,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:26:57,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:26:57,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:26:57,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:26:57,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:26:57,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:26:57,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:26:57,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:26:57,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:26:57,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:26:57,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:26:57,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:26:57,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:26:57,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:26:57,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:26:57,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:26:57,111 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:26:57,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:26:57,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:26:57,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:26:57,115 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 04:26:57,137 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:26:57,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:26:57,139 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:26:57,139 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:26:57,139 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:26:57,140 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:26:57,140 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:26:57,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 04:26:57,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:26:57,141 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:26:57,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:26:57,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:26:57,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:26:57,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:26:57,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:26:57,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:26:57,144 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:26:57,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:26:57,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:26:57,145 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:26:57,145 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:26:57,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:26:57,145 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:26:57,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:26:57,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:26:57,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 04:26:57,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 04:26:57,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:26:57,147 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_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-20 04:26:57,354 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:26:57,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:26:57,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:26:57,373 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:26:57,373 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:26:57,374 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-20 04:26:57,437 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/69feb00e9/7b5c06b6df6141aa9ff617f064b5fc7b/FLAG6822935c8 [2019-11-20 04:26:57,819 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:26:57,820 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-20 04:26:57,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/69feb00e9/7b5c06b6df6141aa9ff617f064b5fc7b/FLAG6822935c8 [2019-11-20 04:26:58,189 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/69feb00e9/7b5c06b6df6141aa9ff617f064b5fc7b [2019-11-20 04:26:58,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:26:58,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:26:58,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:26:58,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:26:58,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:26:58,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff6a41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58, skipping insertion in model container [2019-11-20 04:26:58,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,217 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:26:58,235 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:26:58,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:26:58,438 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:26:58,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:26:58,572 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:26:58,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58 WrapperNode [2019-11-20 04:26:58,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:26:58,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:26:58,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:26:58,574 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:26:58,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:26:58,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:26:58,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:26:58,608 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:26:58,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,624 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... [2019-11-20 04:26:58,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:26:58,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:26:58,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:26:58,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:26:58,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 [2019-11-20 04:26:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:26:58,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:26:58,944 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:26:58,944 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 04:26:58,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:58 BoogieIcfgContainer [2019-11-20 04:26:58,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:26:58,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:26:58,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:26:58,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:26:58,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:26:58" (1/3) ... [2019-11-20 04:26:58,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff1d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:26:58, skipping insertion in model container [2019-11-20 04:26:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:26:58" (2/3) ... [2019-11-20 04:26:58,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dff1d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:26:58, skipping insertion in model container [2019-11-20 04:26:58,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:58" (3/3) ... [2019-11-20 04:26:58,958 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-20 04:26:58,969 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:26:58,976 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 04:26:58,992 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 04:26:59,017 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:26:59,017 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:26:59,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:26:59,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:26:59,018 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:26:59,018 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:26:59,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:26:59,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:26:59,034 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 04:26:59,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 04:26:59,042 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:26:59,043 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 04:26:59,044 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:26:59,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:26:59,052 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 04:26:59,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 04:26:59,062 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506169466] [2019-11-20 04:26:59,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 04:26:59,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:26:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 04:26:59,158 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 04:26:59,159 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 04:26:59,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:26:59 BoogieIcfgContainer [2019-11-20 04:26:59,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:26:59,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:26:59,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:26:59,178 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:26:59,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:26:58" (3/4) ... [2019-11-20 04:26:59,182 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 04:26:59,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:26:59,186 INFO L168 Benchmark]: Toolchain (without parser) took 990.25 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -149.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:59,186 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:26:59,188 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:59,188 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.48 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. [2019-11-20 04:26:59,189 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 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. [2019-11-20 04:26:59,190 INFO L168 Benchmark]: RCFGBuilder took 317.38 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:59,191 INFO L168 Benchmark]: TraceAbstraction took 229.57 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 04:26:59,191 INFO L168 Benchmark]: Witness Printer took 5.59 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. [2019-11-20 04:26:59,195 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 377.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -178.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.48 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.27 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 317.38 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 229.57 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: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 5.59 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: 23]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L18] float f1=0x1.000000p-1f; [L19] float f2=0x1.fffffep-126f; [L21] float res = f1 * f2; [L23] COND TRUE !(res == 0x1.0p-126f) [L23] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.1.24-678e011 [2019-11-20 04:27:01,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 04:27:01,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 04:27:01,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 04:27:01,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 04:27:01,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 04:27:01,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 04:27:01,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 04:27:01,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 04:27:01,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 04:27:01,606 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 04:27:01,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 04:27:01,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 04:27:01,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 04:27:01,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 04:27:01,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 04:27:01,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 04:27:01,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 04:27:01,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 04:27:01,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 04:27:01,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 04:27:01,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 04:27:01,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 04:27:01,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 04:27:01,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 04:27:01,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 04:27:01,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 04:27:01,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 04:27:01,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 04:27:01,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 04:27:01,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 04:27:01,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 04:27:01,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 04:27:01,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 04:27:01,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 04:27:01,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 04:27:01,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 04:27:01,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 04:27:01,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 04:27:01,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 04:27:01,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 04:27:01,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 04:27:01,654 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 04:27:01,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 04:27:01,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 04:27:01,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 04:27:01,657 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 04:27:01,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 04:27:01,657 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 04:27:01,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 04:27:01,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 04:27:01,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 04:27:01,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 04:27:01,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 04:27:01,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 04:27:01,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 04:27:01,659 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 04:27:01,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 04:27:01,660 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 04:27:01,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 04:27:01,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 04:27:01,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 04:27:01,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 04:27:01,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 04:27:01,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 04:27:01,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 04:27:01,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 04:27:01,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 04:27:01,663 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 04:27:01,663 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 04:27:01,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 04:27:01,664 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 04:27:01,664 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_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 -> c87f23af740954e6de1a94dd09957e85cd60c58b [2019-11-20 04:27:02,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 04:27:02,026 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 04:27:02,030 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 04:27:02,031 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 04:27:02,032 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 04:27:02,033 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-20 04:27:02,115 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/1ac71849d/1584703807c1436aa1dff9faec0aa992/FLAG879d2de1d [2019-11-20 04:27:02,602 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 04:27:02,602 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2019-11-20 04:27:02,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/1ac71849d/1584703807c1436aa1dff9faec0aa992/FLAG879d2de1d [2019-11-20 04:27:02,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/data/1ac71849d/1584703807c1436aa1dff9faec0aa992 [2019-11-20 04:27:02,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 04:27:02,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 04:27:02,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 04:27:02,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 04:27:02,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 04:27:02,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:27:02" (1/1) ... [2019-11-20 04:27:02,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5aa7575 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:02, skipping insertion in model container [2019-11-20 04:27:02,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 04:27:02" (1/1) ... [2019-11-20 04:27:03,000 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 04:27:03,019 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 04:27:03,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:27:03,246 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 04:27:03,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 04:27:03,300 INFO L192 MainTranslator]: Completed translation [2019-11-20 04:27:03,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03 WrapperNode [2019-11-20 04:27:03,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 04:27:03,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 04:27:03,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 04:27:03,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 04:27:03,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 04:27:03,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 04:27:03,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 04:27:03,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 04:27:03,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... [2019-11-20 04:27:03,421 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 04:27:03,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 04:27:03,422 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 04:27:03,422 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 04:27:03,423 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 [2019-11-20 04:27:03,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 04:27:03,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 04:27:03,645 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 04:27:03,645 INFO L285 CfgBuilder]: Removed 10 assume(true) statements. [2019-11-20 04:27:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:27:03 BoogieIcfgContainer [2019-11-20 04:27:03,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 04:27:03,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 04:27:03,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 04:27:03,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 04:27:03,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 04:27:02" (1/3) ... [2019-11-20 04:27:03,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b479fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:27:03, skipping insertion in model container [2019-11-20 04:27:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 04:27:03" (2/3) ... [2019-11-20 04:27:03,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26b479fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 04:27:03, skipping insertion in model container [2019-11-20 04:27:03,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:27:03" (3/3) ... [2019-11-20 04:27:03,655 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2019-11-20 04:27:03,667 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 04:27:03,674 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-20 04:27:03,687 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-20 04:27:03,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 04:27:03,721 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 04:27:03,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 04:27:03,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 04:27:03,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 04:27:03,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 04:27:03,723 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 04:27:03,723 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 04:27:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-20 04:27:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 04:27:03,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:27:03,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 04:27:03,749 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:27:03,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:27:03,756 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 04:27:03,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:27:03,768 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1931773434] [2019-11-20 04:27:03,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 [2019-11-20 04:27:03,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:27:03,905 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:27:03,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:27:03,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:03,953 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:27:03,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:03,972 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1931773434] [2019-11-20 04:27:03,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:27:03,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 04:27:03,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646117080] [2019-11-20 04:27:03,978 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:27:03,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:27:03,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:27:03,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:03,992 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 3 states. [2019-11-20 04:27:04,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:27:04,010 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-20 04:27:04,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:27:04,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-20 04:27:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:27:04,025 INFO L225 Difference]: With dead ends: 26 [2019-11-20 04:27:04,026 INFO L226 Difference]: Without dead ends: 10 [2019-11-20 04:27:04,031 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:04,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-11-20 04:27:04,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-11-20 04:27:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-11-20 04:27:04,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2019-11-20 04:27:04,075 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 3 [2019-11-20 04:27:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:27:04,076 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2019-11-20 04:27:04,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:27:04,076 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2019-11-20 04:27:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-20 04:27:04,077 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:27:04,077 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-20 04:27:04,282 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 04:27:04,290 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:27:04,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:27:04,291 INFO L82 PathProgramCache]: Analyzing trace with hash 29801027, now seen corresponding path program 1 times [2019-11-20 04:27:04,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:27:04,292 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80268719] [2019-11-20 04:27:04,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 [2019-11-20 04:27:04,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:27:04,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 04:27:04,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:27:04,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:04,620 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:27:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:04,634 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80268719] [2019-11-20 04:27:04,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:27:04,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 04:27:04,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307783053] [2019-11-20 04:27:04,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:27:04,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:27:04,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:27:04,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:04,636 INFO L87 Difference]: Start difference. First operand 10 states and 9 transitions. Second operand 3 states. [2019-11-20 04:27:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:27:04,643 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-20 04:27:04,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:27:04,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-20 04:27:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:27:04,645 INFO L225 Difference]: With dead ends: 10 [2019-11-20 04:27:04,645 INFO L226 Difference]: Without dead ends: 8 [2019-11-20 04:27:04,646 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-20 04:27:04,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-20 04:27:04,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-20 04:27:04,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2019-11-20 04:27:04,649 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 5 [2019-11-20 04:27:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:27:04,649 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2019-11-20 04:27:04,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:27:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2019-11-20 04:27:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 04:27:04,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 04:27:04,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 04:27:04,868 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-20 04:27:04,868 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 04:27:04,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 04:27:04,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1425859451, now seen corresponding path program 1 times [2019-11-20 04:27:04,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 04:27:04,869 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027851977] [2019-11-20 04:27:04,870 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/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 [2019-11-20 04:27:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 04:27:05,208 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 04:27:05,209 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 04:27:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:05,218 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 04:27:05,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 04:27:05,228 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027851977] [2019-11-20 04:27:05,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 04:27:05,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 04:27:05,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498190622] [2019-11-20 04:27:05,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 04:27:05,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 04:27:05,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 04:27:05,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:05,230 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand 3 states. [2019-11-20 04:27:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 04:27:05,231 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2019-11-20 04:27:05,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 04:27:05,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 04:27:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 04:27:05,232 INFO L225 Difference]: With dead ends: 8 [2019-11-20 04:27:05,232 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 04:27:05,233 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 04:27:05,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 04:27:05,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 04:27:05,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 04:27:05,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 04:27:05,234 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2019-11-20 04:27:05,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 04:27:05,234 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 04:27:05,234 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 04:27:05,234 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 04:27:05,235 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 04:27:05,435 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-20 04:27:05,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 04:27:05,443 INFO L444 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2019-11-20 04:27:05,443 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 04:27:05,444 INFO L444 ceAbstractionStarter]: For program point L33-1(line 33) no Hoare annotation was computed. [2019-11-20 04:27:05,444 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2019-11-20 04:27:05,444 INFO L444 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2019-11-20 04:27:05,444 INFO L444 ceAbstractionStarter]: For program point L23-1(line 23) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point L36(lines 1 50) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point L3(lines 3 24) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 04:27:05,445 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 04:27:05,446 INFO L444 ceAbstractionStarter]: For program point L26(lines 26 34) no Hoare annotation was computed. [2019-11-20 04:27:05,446 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2019-11-20 04:27:05,446 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2019-11-20 04:27:05,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 04:27:05 BoogieIcfgContainer [2019-11-20 04:27:05,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 04:27:05,450 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 04:27:05,450 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 04:27:05,451 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 04:27:05,451 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 04:27:03" (3/4) ... [2019-11-20 04:27:05,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 04:27:05,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:27:05,467 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 04:27:05,510 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_87bf9c26-7e47-40ce-9ba7-bca8615a01ed/bin/uautomizer/witness.graphml [2019-11-20 04:27:05,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 04:27:05,513 INFO L168 Benchmark]: Toolchain (without parser) took 2531.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -129.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,514 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 04:27:05,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.84 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 943.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -211.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,516 INFO L168 Benchmark]: Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,517 INFO L168 Benchmark]: RCFGBuilder took 225.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,518 INFO L168 Benchmark]: TraceAbstraction took 1801.74 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. [2019-11-20 04:27:05,518 INFO L168 Benchmark]: Witness Printer took 60.88 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. [2019-11-20 04:27:05,522 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.84 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 943.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 94.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 943.0 MB in the beginning and 1.2 GB in the end (delta: -211.6 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 225.50 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1801.74 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: 46.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 11.5 GB. * Witness Printer took 60.88 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: - PositiveResult [Line: 33]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 23]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 3 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 15 SDslu, 6 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 6 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 8 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...