./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b ..................................................................................................................................................................................................................................................................................................... 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_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-11-15 23:20:09,626 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:20:09,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:20:09,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:20:09,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:20:09,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:20:09,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:20:09,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:20:09,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:20:09,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:20:09,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:20:09,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:20:09,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:20:09,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:20:09,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:20:09,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:20:09,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:20:09,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:20:09,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:20:09,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:20:09,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:20:09,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:20:09,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:20:09,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:20:09,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:20:09,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:20:09,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:20:09,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:20:09,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:20:09,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:20:09,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:20:09,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:20:09,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:20:09,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:20:09,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:20:09,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:20:09,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:20:09,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:20:09,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:20:09,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:20:09,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:20:09,679 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-15 23:20:09,695 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:20:09,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:20:09,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:20:09,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:20:09,696 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:20:09,697 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:20:09,697 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:20:09,697 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 23:20:09,697 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:20:09,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:20:09,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:20:09,698 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:20:09,698 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:20:09,698 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:20:09,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:20:09,698 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:20:09,699 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:20:09,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:20:09,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:20:09,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:20:09,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:20:09,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:20:09,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:20:09,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:20:09,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:20:09,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 23:20:09,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 23:20:09,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:20:09,701 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_66778421-26cb-445f-94d8-173c5cf27a6d/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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2019-11-15 23:20:09,726 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:20:09,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:20:09,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:20:09,742 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:20:09,742 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:20:09,743 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-11-15 23:20:09,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/b69b59e9d/4d2acfb57efa4fbb92e00f3459d3f0bc/FLAG4481672aa [2019-11-15 23:20:10,262 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:20:10,263 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-11-15 23:20:10,273 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/b69b59e9d/4d2acfb57efa4fbb92e00f3459d3f0bc/FLAG4481672aa [2019-11-15 23:20:10,586 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/b69b59e9d/4d2acfb57efa4fbb92e00f3459d3f0bc [2019-11-15 23:20:10,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:20:10,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:20:10,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:20:10,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:20:10,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:20:10,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:20:10" (1/1) ... [2019-11-15 23:20:10,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a22a60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:10, skipping insertion in model container [2019-11-15 23:20:10,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:20:10" (1/1) ... [2019-11-15 23:20:10,609 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:20:10,631 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:20:10,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:20:10,947 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:20:10,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:20:11,020 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:20:11,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11 WrapperNode [2019-11-15 23:20:11,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:20:11,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:20:11,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:20:11,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:20:11,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:20:11,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:20:11,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:20:11,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:20:11,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,089 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,107 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... [2019-11-15 23:20:11,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:20:11,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:20:11,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:20:11,114 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:20:11,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:20:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:20:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2019-11-15 23:20:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-15 23:20:11,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-11-15 23:20:11,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:20:11,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:20:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-15 23:20:11,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:20:11,700 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:20:11,700 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 23:20:11,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:20:11 BoogieIcfgContainer [2019-11-15 23:20:11,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:20:11,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:20:11,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:20:11,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:20:11,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:20:10" (1/3) ... [2019-11-15 23:20:11,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2c5b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:20:11, skipping insertion in model container [2019-11-15 23:20:11,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:11" (2/3) ... [2019-11-15 23:20:11,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b2c5b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:20:11, skipping insertion in model container [2019-11-15 23:20:11,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:20:11" (3/3) ... [2019-11-15 23:20:11,709 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2019-11-15 23:20:11,722 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:20:11,732 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:20:11,744 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:20:11,779 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:20:11,781 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:20:11,781 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:20:11,781 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:20:11,781 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:20:11,781 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:20:11,782 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:20:11,782 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:20:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-15 23:20:11,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:20:11,813 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:11,814 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:11,816 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:11,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:11,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2019-11-15 23:20:11,827 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:20:11,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701435589] [2019-11-15 23:20:11,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:20:11,828 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:20:11,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:20:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:11,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:11,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701435589] [2019-11-15 23:20:11,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:11,952 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-15 23:20:11,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847677718] [2019-11-15 23:20:11,956 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:20:11,956 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 23:20:11,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:20:11,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:20:11,968 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-15 23:20:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:11,983 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2019-11-15 23:20:11,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:20:11,984 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:20:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:11,994 INFO L225 Difference]: With dead ends: 64 [2019-11-15 23:20:11,994 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 23:20:11,997 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:20:12,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 23:20:12,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 23:20:12,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:20:12,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2019-11-15 23:20:12,030 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2019-11-15 23:20:12,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:12,030 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2019-11-15 23:20:12,030 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:20:12,031 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2019-11-15 23:20:12,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:20:12,031 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:12,031 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:12,032 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:12,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2019-11-15 23:20:12,032 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 23:20:12,033 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877470400] [2019-11-15 23:20:12,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:20:12,033 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 23:20:12,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 23:20:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:20:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 23:20:12,124 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 23:20:12,124 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 23:20:12,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 11:20:12 BoogieIcfgContainer [2019-11-15 23:20:12,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 23:20:12,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 23:20:12,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 23:20:12,163 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 23:20:12,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:20:11" (3/4) ... [2019-11-15 23:20:12,168 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-15 23:20:12,168 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 23:20:12,170 INFO L168 Benchmark]: Toolchain (without parser) took 1579.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -128.6 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:12,171 INFO L168 Benchmark]: CDTParser took 0.20 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. [2019-11-15 23:20:12,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:12,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.30 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. [2019-11-15 23:20:12,172 INFO L168 Benchmark]: Boogie Preprocessor took 40.06 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. [2019-11-15 23:20:12,173 INFO L168 Benchmark]: RCFGBuilder took 587.41 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:12,174 INFO L168 Benchmark]: TraceAbstraction took 460.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2019-11-15 23:20:12,174 INFO L168 Benchmark]: Witness Printer took 4.81 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. [2019-11-15 23:20:12,178 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 429.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.30 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 40.06 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 587.41 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: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 460.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Witness Printer took 4.81 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: 150]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 149, overapproximation of bitwiseOr at line 59, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L144] double x = 1.0; [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L58] COND TRUE hx < 0x00100000 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L146] double res = __ieee754_log(x); [L149] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] [L149] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L150] __VERIFIER_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 44 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=33occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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-cad4683 [2019-11-15 23:20:14,683 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 23:20:14,685 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 23:20:14,702 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 23:20:14,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 23:20:14,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 23:20:14,705 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 23:20:14,707 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 23:20:14,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 23:20:14,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 23:20:14,719 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 23:20:14,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 23:20:14,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 23:20:14,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 23:20:14,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 23:20:14,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 23:20:14,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 23:20:14,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 23:20:14,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 23:20:14,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 23:20:14,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 23:20:14,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 23:20:14,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 23:20:14,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 23:20:14,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 23:20:14,748 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 23:20:14,748 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 23:20:14,749 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 23:20:14,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 23:20:14,751 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 23:20:14,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 23:20:14,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 23:20:14,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 23:20:14,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 23:20:14,755 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 23:20:14,755 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 23:20:14,756 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 23:20:14,756 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 23:20:14,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 23:20:14,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 23:20:14,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 23:20:14,759 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-15 23:20:14,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 23:20:14,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 23:20:14,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 23:20:14,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 23:20:14,778 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 23:20:14,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 23:20:14,778 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 23:20:14,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 23:20:14,779 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 23:20:14,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-15 23:20:14,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 23:20:14,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-15 23:20:14,780 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-15 23:20:14,781 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-15 23:20:14,781 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 23:20:14,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-15 23:20:14,781 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 23:20:14,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-15 23:20:14,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 23:20:14,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 23:20:14,783 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 23:20:14,783 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 23:20:14,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 23:20:14,784 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 23:20:14,784 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 23:20:14,784 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-15 23:20:14,784 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-15 23:20:14,785 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-15 23:20:14,785 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-15 23:20:14,785 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-15 23:20:14,786 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_66778421-26cb-445f-94d8-173c5cf27a6d/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 -> a2549d464b179f7f7f50962dd1fbb8e0dbdceb3b [2019-11-15 23:20:14,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 23:20:14,836 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 23:20:14,840 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 23:20:14,842 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 23:20:14,842 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 23:20:14,843 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-11-15 23:20:14,906 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/3e1c1a845/2164da4aeec74c8e888f376d387592d4/FLAG115938376 [2019-11-15 23:20:15,375 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 23:20:15,376 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2019-11-15 23:20:15,382 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/3e1c1a845/2164da4aeec74c8e888f376d387592d4/FLAG115938376 [2019-11-15 23:20:15,771 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/data/3e1c1a845/2164da4aeec74c8e888f376d387592d4 [2019-11-15 23:20:15,773 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 23:20:15,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-15 23:20:15,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 23:20:15,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 23:20:15,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 23:20:15,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:20:15" (1/1) ... [2019-11-15 23:20:15,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23d47f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:15, skipping insertion in model container [2019-11-15 23:20:15,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 11:20:15" (1/1) ... [2019-11-15 23:20:15,791 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 23:20:15,815 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 23:20:16,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:20:16,096 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 23:20:16,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 23:20:16,282 INFO L192 MainTranslator]: Completed translation [2019-11-15 23:20:16,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16 WrapperNode [2019-11-15 23:20:16,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 23:20:16,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-15 23:20:16,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-15 23:20:16,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-15 23:20:16,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-15 23:20:16,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 23:20:16,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 23:20:16,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 23:20:16,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... [2019-11-15 23:20:16,392 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 23:20:16,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 23:20:16,393 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 23:20:16,393 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 23:20:16,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:20:16,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2019-11-15 23:20:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-11-15 23:20:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-15 23:20:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-15 23:20:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 23:20:16,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 23:20:16,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-15 23:20:16,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 23:20:39,011 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 23:20:39,011 INFO L284 CfgBuilder]: Removed 16 assume(true) statements. [2019-11-15 23:20:39,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:20:39 BoogieIcfgContainer [2019-11-15 23:20:39,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 23:20:39,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 23:20:39,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 23:20:39,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 23:20:39,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 11:20:15" (1/3) ... [2019-11-15 23:20:39,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179079f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:20:39, skipping insertion in model container [2019-11-15 23:20:39,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 11:20:16" (2/3) ... [2019-11-15 23:20:39,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@179079f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 11:20:39, skipping insertion in model container [2019-11-15 23:20:39,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 11:20:39" (3/3) ... [2019-11-15 23:20:39,019 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2019-11-15 23:20:39,028 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 23:20:39,035 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-15 23:20:39,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-15 23:20:39,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 23:20:39,067 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-15 23:20:39,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 23:20:39,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 23:20:39,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 23:20:39,068 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 23:20:39,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 23:20:39,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 23:20:39,079 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-11-15 23:20:39,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-15 23:20:39,084 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:39,084 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:39,086 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:39,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:39,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2019-11-15 23:20:39,098 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:39,098 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546245060] [2019-11-15 23:20:39,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:20:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:39,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-15 23:20:39,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:39,992 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:39,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:39,997 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546245060] [2019-11-15 23:20:39,998 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:39,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-15 23:20:39,998 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757820044] [2019-11-15 23:20:40,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-15 23:20:40,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:40,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-15 23:20:40,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:20:40,019 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-11-15 23:20:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:40,038 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2019-11-15 23:20:40,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-15 23:20:40,040 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-15 23:20:40,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:40,049 INFO L225 Difference]: With dead ends: 64 [2019-11-15 23:20:40,050 INFO L226 Difference]: Without dead ends: 30 [2019-11-15 23:20:40,052 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-15 23:20:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-15 23:20:40,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-15 23:20:40,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-15 23:20:40,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2019-11-15 23:20:40,084 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2019-11-15 23:20:40,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:40,084 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2019-11-15 23:20:40,084 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-15 23:20:40,084 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2019-11-15 23:20:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 23:20:40,085 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:40,085 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:40,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-15 23:20:40,302 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:40,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2019-11-15 23:20:40,303 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:40,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229266438] [2019-11-15 23:20:40,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:20:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:41,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-15 23:20:41,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:41,287 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:41,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:41,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229266438] [2019-11-15 23:20:41,347 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:41,347 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:20:41,347 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210472259] [2019-11-15 23:20:41,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-15 23:20:41,349 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:41,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-15 23:20:41,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-15 23:20:41,349 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand 6 states. [2019-11-15 23:20:45,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:20:45,086 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2019-11-15 23:20:45,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 23:20:45,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-11-15 23:20:45,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:20:45,756 INFO L225 Difference]: With dead ends: 50 [2019-11-15 23:20:45,756 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 23:20:45,757 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:20:45,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 23:20:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 23:20:45,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 23:20:45,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2019-11-15 23:20:45,762 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2019-11-15 23:20:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:20:45,762 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2019-11-15 23:20:45,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-15 23:20:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2019-11-15 23:20:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:20:45,764 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:20:45,764 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:20:45,971 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-11-15 23:20:45,972 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:20:45,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:20:45,972 INFO L82 PathProgramCache]: Analyzing trace with hash 464469069, now seen corresponding path program 1 times [2019-11-15 23:20:45,974 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:20:45,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096691991] [2019-11-15 23:20:45,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:20:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:20:46,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-15 23:20:46,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:20:46,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:46,215 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:20:46,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-15 23:20:46,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:20:46,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096691991] [2019-11-15 23:20:46,251 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:20:46,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-11-15 23:20:46,251 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148964784] [2019-11-15 23:20:46,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 23:20:46,252 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:20:46,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 23:20:46,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-15 23:20:46,253 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 7 states. [2019-11-15 23:21:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:21:13,217 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-11-15 23:21:13,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-15 23:21:13,218 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2019-11-15 23:21:13,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:21:13,220 INFO L225 Difference]: With dead ends: 47 [2019-11-15 23:21:13,220 INFO L226 Difference]: Without dead ends: 44 [2019-11-15 23:21:13,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2019-11-15 23:21:13,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-15 23:21:13,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 28. [2019-11-15 23:21:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:21:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-11-15 23:21:13,233 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 17 [2019-11-15 23:21:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:21:13,235 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-11-15 23:21:13,235 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 23:21:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-11-15 23:21:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:21:13,236 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:21:13,237 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:21:13,458 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-11-15 23:21:13,459 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:21:13,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:21:13,459 INFO L82 PathProgramCache]: Analyzing trace with hash 466316111, now seen corresponding path program 1 times [2019-11-15 23:21:13,460 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:21:13,460 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111745053] [2019-11-15 23:21:13,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/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 [2019-11-15 23:21:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:21:14,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-15 23:21:14,328 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:21:14,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:21:14,549 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:21:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:21:14,822 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111745053] [2019-11-15 23:21:14,822 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-15 23:21:14,822 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2019-11-15 23:21:14,822 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661534479] [2019-11-15 23:21:14,823 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-15 23:21:14,823 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-15 23:21:14,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-15 23:21:14,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-11-15 23:21:14,824 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 12 states. [2019-11-15 23:21:43,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 23:21:43,399 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2019-11-15 23:21:43,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-15 23:21:43,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2019-11-15 23:21:43,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 23:21:43,461 INFO L225 Difference]: With dead ends: 55 [2019-11-15 23:21:43,461 INFO L226 Difference]: Without dead ends: 46 [2019-11-15 23:21:43,462 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2019-11-15 23:21:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-15 23:21:43,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 28. [2019-11-15 23:21:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-11-15 23:21:43,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-11-15 23:21:43,469 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2019-11-15 23:21:43,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 23:21:43,470 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-11-15 23:21:43,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-15 23:21:43,470 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-11-15 23:21:43,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-15 23:21:43,471 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 23:21:43,471 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 23:21:43,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-11-15 23:21:43,695 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-15 23:21:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 23:21:43,695 INFO L82 PathProgramCache]: Analyzing trace with hash 671337773, now seen corresponding path program 1 times [2019-11-15 23:21:43,696 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-11-15 23:21:43,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980319169] [2019-11-15 23:21:43,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_66778421-26cb-445f-94d8-173c5cf27a6d/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-11-15 23:21:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 23:21:44,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-15 23:21:44,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-15 23:21:44,869 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 126 [2019-11-15 23:21:44,879 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:21:44,885 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:21:44,885 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:21:44,903 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:21:44,904 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. [2019-11-15 23:21:44,904 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:158, output treesize:86 [2019-11-15 23:21:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 23:21:44,954 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-15 23:21:46,051 WARN L191 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2019-11-15 23:21:46,064 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 71 [2019-11-15 23:21:46,074 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-15 23:21:46,213 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-11-15 23:21:46,213 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:21:46,213 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-15 23:21:46,851 WARN L191 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2019-11-15 23:21:46,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-15 23:21:46,852 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-15 23:21:46,853 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:88, output treesize:46 [2019-11-15 23:22:05,201 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-11-15 23:22:23,654 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-15 23:22:23,855 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-11-15 23:22:23,856 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.checkSat(ManagedScript.java:140) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:84) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:899) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:580) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:335) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.checkFeasibility(TraceAbstractionRefinementEngine.java:244) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 42 more [2019-11-15 23:22:23,862 INFO L168 Benchmark]: Toolchain (without parser) took 128086.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 945.6 MB in the beginning and 927.1 MB in the end (delta: 18.6 MB). Peak memory consumption was 177.4 MB. Max. memory is 11.5 GB. [2019-11-15 23:22:23,863 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-15 23:22:23,864 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. [2019-11-15 23:22:23,865 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.25 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. [2019-11-15 23:22:23,865 INFO L168 Benchmark]: Boogie Preprocessor took 50.07 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-15 23:22:23,866 INFO L168 Benchmark]: RCFGBuilder took 22620.10 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. [2019-11-15 23:22:23,867 INFO L168 Benchmark]: TraceAbstraction took 104846.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.1 MB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. [2019-11-15 23:22:23,871 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 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 507.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 158.9 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -200.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.25 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 50.07 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: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 22620.10 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: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 104846.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 927.1 MB in the end (delta: 175.5 MB). Peak memory consumption was 175.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...