./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.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/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 6f57b560c2271100a3cc213cf38aa06905e4b86e ...................................................................................................................................................................................................................................................................................................................................................................... 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/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 6f57b560c2271100a3cc213cf38aa06905e4b86e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:55:49,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:49,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:49,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:49,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:49,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:49,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:49,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:49,725 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:49,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:49,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:49,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:49,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:49,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:49,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:49,739 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:49,740 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:49,740 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:49,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:49,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:49,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:49,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:49,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:49,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:49,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:49,750 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:49,750 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:49,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:49,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:49,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:49,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:49,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:49,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:49,758 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:49,759 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:49,759 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:49,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:49,760 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:49,760 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:49,760 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:49,761 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:49,761 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-22 08:55:49,775 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:49,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:49,776 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:49,776 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:49,776 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:49,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:49,777 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:49,777 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:55:49,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:49,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:49,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:49,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:49,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:49,779 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:49,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:49,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:49,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:49,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:49,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:49,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:49,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:55:49,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:55:49,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:49,790 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/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-10-22 08:55:49,821 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:49,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:49,836 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:49,837 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:49,837 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:49,838 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-10-22 08:55:49,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/e94ef228b/68aae6e971ab491188c91dde41354627/FLAGbd8215bb9 [2019-10-22 08:55:50,300 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:50,303 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-10-22 08:55:50,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/e94ef228b/68aae6e971ab491188c91dde41354627/FLAGbd8215bb9 [2019-10-22 08:55:50,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/e94ef228b/68aae6e971ab491188c91dde41354627 [2019-10-22 08:55:50,689 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:50,690 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:50,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:50,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:50,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:50,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:50" (1/1) ... [2019-10-22 08:55:50,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60953abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:50, skipping insertion in model container [2019-10-22 08:55:50,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:50" (1/1) ... [2019-10-22 08:55:50,706 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:50,721 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:50,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:50,986 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:51,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:51,030 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:51,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51 WrapperNode [2019-10-22 08:55:51,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:51,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:51,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:51,031 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:51,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:51,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:51,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:51,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:51,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... [2019-10-22 08:55:51,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:51,095 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:51,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:51,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:51,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:51,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-10-22 08:55:51,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:51,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-22 08:55:51,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:51,399 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:51,399 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 08:55:51,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:51 BoogieIcfgContainer [2019-10-22 08:55:51,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:51,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:51,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:51,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:51,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:50" (1/3) ... [2019-10-22 08:55:51,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d30d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:51, skipping insertion in model container [2019-10-22 08:55:51,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:51" (2/3) ... [2019-10-22 08:55:51,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d30d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:51, skipping insertion in model container [2019-10-22 08:55:51,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:51" (3/3) ... [2019-10-22 08:55:51,419 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-10-22 08:55:51,436 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:51,451 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:51,469 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:51,489 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:51,490 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:51,490 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:51,490 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:51,490 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:51,490 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:51,490 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:51,490 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:51,503 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-22 08:55:51,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:55:51,508 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,509 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,510 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,515 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-10-22 08:55:51,522 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709781685] [2019-10-22 08:55:51,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,523 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,661 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709781685] [2019-10-22 08:55:51,661 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:55:51,662 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181921132] [2019-10-22 08:55:51,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:55:51,666 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:55:51,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:55:51,682 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-22 08:55:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,698 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-10-22 08:55:51,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:51,699 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-22 08:55:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,706 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:55:51,706 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:55:51,709 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 [2019-10-22 08:55:51,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:55:51,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:55:51,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:55:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-10-22 08:55:51,741 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-10-22 08:55:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,741 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-10-22 08:55:51,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:55:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-10-22 08:55:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:51,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,742 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,742 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:51,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-10-22 08:55:51,743 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607538196] [2019-10-22 08:55:51,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,745 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,745 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,849 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607538196] [2019-10-22 08:55:51,850 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,850 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:51,850 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275320322] [2019-10-22 08:55:51,851 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:51,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:51,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:51,852 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-10-22 08:55:51,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:51,913 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-10-22 08:55:51,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:51,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 08:55:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:51,914 INFO L225 Difference]: With dead ends: 53 [2019-10-22 08:55:51,914 INFO L226 Difference]: Without dead ends: 44 [2019-10-22 08:55:51,915 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:51,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-22 08:55:51,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-10-22 08:55:51,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:55:51,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 08:55:51,921 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-10-22 08:55:51,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:51,921 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 08:55:51,921 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:51,922 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 08:55:51,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:55:51,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:51,922 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:51,923 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:51,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:51,923 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-10-22 08:55:51,923 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:51,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75060440] [2019-10-22 08:55:51,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,924 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:51,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:51,996 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75060440] [2019-10-22 08:55:51,996 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:51,997 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:55:51,997 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188170012] [2019-10-22 08:55:51,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:51,997 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:55:51,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:51,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:51,998 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-10-22 08:55:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:52,046 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-10-22 08:55:52,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:52,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-22 08:55:52,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:52,047 INFO L225 Difference]: With dead ends: 55 [2019-10-22 08:55:52,047 INFO L226 Difference]: Without dead ends: 46 [2019-10-22 08:55:52,048 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:55:52,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-22 08:55:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-10-22 08:55:52,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:55:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 08:55:52,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-10-22 08:55:52,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:52,052 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 08:55:52,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:52,053 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 08:55:52,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:55:52,053 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:52,053 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:52,053 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:52,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:52,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-10-22 08:55:52,054 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:55:52,054 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616512744] [2019-10-22 08:55:52,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,054 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:55:52,055 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:55:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:52,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:52,124 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:55:52,124 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:52,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:52 BoogieIcfgContainer [2019-10-22 08:55:52,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:52,150 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:52,150 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:52,150 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:52,151 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:51" (3/4) ... [2019-10-22 08:55:52,154 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:55:52,154 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:52,156 INFO L168 Benchmark]: Toolchain (without parser) took 1465.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.5 MB in the beginning and 1.0 GB in the end (delta: -82.7 MB). Peak memory consumption was 37.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:52,157 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:52,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:52,158 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:52,158 INFO L168 Benchmark]: Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:52,158 INFO L168 Benchmark]: RCFGBuilder took 305.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:52,159 INFO L168 Benchmark]: TraceAbstraction took 748.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:52,160 INFO L168 Benchmark]: Witness Printer took 4.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:52,162 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 340.09 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 948.5 MB in the beginning and 1.1 GB in the end (delta: -162.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.89 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.8 MB). Peak memory consumption was 1.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.77 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 305.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 29.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 748.11 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 49.0 MB). Peak memory consumption was 49.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.61 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 80. Possible FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 135 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 30 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 28 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 [2019-10-22 08:55:54,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:55:54,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:55:54,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:55:54,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:55:54,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:55:54,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:55:54,159 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:55:54,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:55:54,162 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:55:54,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:55:54,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:55:54,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:55:54,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:55:54,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:55:54,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:55:54,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:55:54,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:55:54,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:55:54,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:55:54,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:55:54,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:55:54,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:55:54,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:55:54,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:55:54,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:55:54,193 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:55:54,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:55:54,194 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:55:54,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:55:54,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:55:54,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:55:54,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:55:54,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:55:54,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:55:54,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:55:54,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:55:54,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:55:54,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:55:54,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:55:54,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:55:54,201 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-10-22 08:55:54,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:55:54,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:55:54,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:55:54,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:55:54,225 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:55:54,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:55:54,225 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 08:55:54,226 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 08:55:54,227 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:55:54,227 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:55:54,227 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:55:54,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 08:55:54,228 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:55:54,228 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:55:54,228 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:55:54,228 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:55:54,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:55:54,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:55:54,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:55:54,229 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 08:55:54,229 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-10-22 08:55:54,229 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 08:55:54,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 08:55:54,230 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 08:55:54,230 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/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 -> 6f57b560c2271100a3cc213cf38aa06905e4b86e [2019-10-22 08:55:54,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:55:54,278 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:55:54,281 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:55:54,283 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:55:54,283 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:55:54,284 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-10-22 08:55:54,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/80381a6ba/caa05697235348a4920bbbefd6c113c8/FLAG2cf56ef57 [2019-10-22 08:55:54,719 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:55:54,723 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/sv-benchmarks/c/float-newlib/double_req_bl_1252b.c [2019-10-22 08:55:54,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/80381a6ba/caa05697235348a4920bbbefd6c113c8/FLAG2cf56ef57 [2019-10-22 08:55:54,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/data/80381a6ba/caa05697235348a4920bbbefd6c113c8 [2019-10-22 08:55:54,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:55:54,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:55:54,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:54,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:55:54,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:55:54,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:54,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b4998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54, skipping insertion in model container [2019-10-22 08:55:54,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:54,756 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:55:54,771 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:55:54,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:54,935 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:55:54,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:55:54,992 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:55:54,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54 WrapperNode [2019-10-22 08:55:54,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:55:54,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:54,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:55:54,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:55:55,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,067 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:55:55,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:55:55,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:55:55,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:55:55,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,125 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... [2019-10-22 08:55:55,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:55:55,128 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:55:55,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:55:55,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:55:55,129 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2019-10-22 08:55:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 08:55:55,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-10-22 08:55:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:55:55,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:55:55,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:55:55,556 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:55:55,556 INFO L284 CfgBuilder]: Removed 18 assume(true) statements. [2019-10-22 08:55:55,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:55 BoogieIcfgContainer [2019-10-22 08:55:55,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:55:55,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:55:55,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:55:55,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:55:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:55:54" (1/3) ... [2019-10-22 08:55:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19691d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:55, skipping insertion in model container [2019-10-22 08:55:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:55:54" (2/3) ... [2019-10-22 08:55:55,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19691d10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:55:55, skipping insertion in model container [2019-10-22 08:55:55,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:55" (3/3) ... [2019-10-22 08:55:55,568 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2019-10-22 08:55:55,576 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:55:55,583 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 08:55:55,593 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 08:55:55,615 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:55:55,615 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 08:55:55,616 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:55:55,616 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:55:55,616 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:55:55,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:55:55,616 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:55:55,616 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:55:55,626 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-10-22 08:55:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-22 08:55:55,632 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:55,633 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:55,635 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:55,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:55,639 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-10-22 08:55:55,645 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:55,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [795728332] [2019-10-22 08:55:55,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:55,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:55,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 08:55:55,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:55,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:55,746 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:55,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:55,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [795728332] [2019-10-22 08:55:55,752 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:55,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 08:55:55,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068280788] [2019-10-22 08:55:55,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 08:55:55,759 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:55,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 08:55:55,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 08:55:55,769 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-10-22 08:55:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:55,783 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-10-22 08:55:55,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:55:55,785 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-22 08:55:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:55,793 INFO L225 Difference]: With dead ends: 62 [2019-10-22 08:55:55,794 INFO L226 Difference]: Without dead ends: 29 [2019-10-22 08:55:55,796 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 [2019-10-22 08:55:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-22 08:55:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-22 08:55:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 08:55:55,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-10-22 08:55:55,824 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-10-22 08:55:55,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:55,824 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-10-22 08:55:55,824 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 08:55:55,825 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-10-22 08:55:55,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:55:55,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:55,825 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:56,032 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-10-22 08:55:56,033 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:56,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:56,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-10-22 08:55:56,034 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:56,034 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964201659] [2019-10-22 08:55:56,034 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:56,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:55:56,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:56,150 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:56,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:56,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964201659] [2019-10-22 08:55:56,181 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:56,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 08:55:56,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126688414] [2019-10-22 08:55:56,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:56,183 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:56,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:56,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:56,187 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-10-22 08:55:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:56,316 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-10-22 08:55:56,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:56,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-10-22 08:55:56,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:56,321 INFO L225 Difference]: With dead ends: 68 [2019-10-22 08:55:56,321 INFO L226 Difference]: Without dead ends: 59 [2019-10-22 08:55:56,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:56,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-22 08:55:56,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-10-22 08:55:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-22 08:55:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-10-22 08:55:56,327 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-10-22 08:55:56,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:56,328 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-10-22 08:55:56,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:56,328 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-10-22 08:55:56,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:55:56,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:56,329 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:56,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-10-22 08:55:56,529 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:56,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:56,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-10-22 08:55:56,530 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:56,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621373118] [2019-10-22 08:55:56,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:56,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:55:56,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:56,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:56,651 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:56,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:56,686 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621373118] [2019-10-22 08:55:56,686 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:56,686 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 08:55:56,686 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370780812] [2019-10-22 08:55:56,687 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:56,687 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:56,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:56,688 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2019-10-22 08:55:56,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:56,788 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-10-22 08:55:56,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:55:56,789 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-10-22 08:55:56,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:56,790 INFO L225 Difference]: With dead ends: 52 [2019-10-22 08:55:56,790 INFO L226 Difference]: Without dead ends: 28 [2019-10-22 08:55:56,790 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:55:56,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-22 08:55:56,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-10-22 08:55:56,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 08:55:56,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2019-10-22 08:55:56,796 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2019-10-22 08:55:56,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:56,796 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2019-10-22 08:55:56,796 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:56,796 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2019-10-22 08:55:56,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:55:56,797 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:56,798 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:56,998 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-10-22 08:55:56,998 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-10-22 08:55:57,000 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:57,007 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027991740] [2019-10-22 08:55:57,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:57,107 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 08:55:57,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:57,122 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:57,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027991740] [2019-10-22 08:55:57,145 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:57,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 08:55:57,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431132226] [2019-10-22 08:55:57,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 08:55:57,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:57,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 08:55:57,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 08:55:57,146 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2019-10-22 08:55:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:57,247 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2019-10-22 08:55:57,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:55:57,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-22 08:55:57,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:57,250 INFO L225 Difference]: With dead ends: 65 [2019-10-22 08:55:57,250 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 08:55:57,250 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 08:55:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2019-10-22 08:55:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:55:57,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2019-10-22 08:55:57,259 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2019-10-22 08:55:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:57,260 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2019-10-22 08:55:57,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 08:55:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2019-10-22 08:55:57,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:55:57,261 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:57,262 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:57,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-10-22 08:55:57,468 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:57,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:57,468 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-10-22 08:55:57,468 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:57,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224897448] [2019-10-22 08:55:57,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/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 [2019-10-22 08:55:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:57,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 08:55:57,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:57,597 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:57,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:57,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224897448] [2019-10-22 08:55:57,638 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:57,638 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 08:55:57,638 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046181817] [2019-10-22 08:55:57,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:55:57,639 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:57,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:55:57,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:57,639 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2019-10-22 08:55:57,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:57,650 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2019-10-22 08:55:57,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:55:57,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-10-22 08:55:57,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:57,652 INFO L225 Difference]: With dead ends: 40 [2019-10-22 08:55:57,652 INFO L226 Difference]: Without dead ends: 30 [2019-10-22 08:55:57,652 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:55:57,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-22 08:55:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-22 08:55:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-22 08:55:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2019-10-22 08:55:57,656 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2019-10-22 08:55:57,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:57,656 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2019-10-22 08:55:57,657 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:55:57,657 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2019-10-22 08:55:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 08:55:57,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:57,657 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:57,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-10-22 08:55:57,858 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:57,858 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-10-22 08:55:57,859 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:57,859 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235616915] [2019-10-22 08:55:57,859 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-10-22 08:55:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:57,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 08:55:57,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:57,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:57,995 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:57,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:58,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235616915] [2019-10-22 08:55:58,048 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:58,049 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-22 08:55:58,049 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193268779] [2019-10-22 08:55:58,049 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 08:55:58,049 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:58,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 08:55:58,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-22 08:55:58,050 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2019-10-22 08:55:58,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:58,171 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2019-10-22 08:55:58,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 08:55:58,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-10-22 08:55:58,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:58,173 INFO L225 Difference]: With dead ends: 42 [2019-10-22 08:55:58,173 INFO L226 Difference]: Without dead ends: 39 [2019-10-22 08:55:58,173 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-10-22 08:55:58,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-22 08:55:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-10-22 08:55:58,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-10-22 08:55:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2019-10-22 08:55:58,178 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2019-10-22 08:55:58,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:58,178 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2019-10-22 08:55:58,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 08:55:58,178 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2019-10-22 08:55:58,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 08:55:58,179 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:58,179 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:58,379 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-10-22 08:55:58,380 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:58,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-10-22 08:55:58,381 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:58,381 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [113869679] [2019-10-22 08:55:58,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-10-22 08:55:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:55:58,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-22 08:55:58,473 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:55:58,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:58,512 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 08:55:58,532 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-22 08:55:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:55:58,615 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [113869679] [2019-10-22 08:55:58,615 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:55:58,616 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-22 08:55:58,616 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992399222] [2019-10-22 08:55:58,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 08:55:58,616 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-10-22 08:55:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 08:55:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 08:55:58,617 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2019-10-22 08:55:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:55:58,713 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2019-10-22 08:55:58,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:55:58,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-22 08:55:58,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:55:58,717 INFO L225 Difference]: With dead ends: 45 [2019-10-22 08:55:58,717 INFO L226 Difference]: Without dead ends: 27 [2019-10-22 08:55:58,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2019-10-22 08:55:58,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-22 08:55:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-22 08:55:58,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-22 08:55:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-22 08:55:58,722 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2019-10-22 08:55:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:55:58,722 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-22 08:55:58,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 08:55:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-22 08:55:58,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 08:55:58,723 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:55:58,723 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:55:58,923 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-10-22 08:55:58,924 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 08:55:58,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:55:58,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-10-22 08:55:58,924 INFO L157 tionRefinementEngine]: Executing refinement strategy WOLF [2019-10-22 08:55:58,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159010563] [2019-10-22 08:55:58,925 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-10-22 08:55:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:55:59,309 INFO L168 tionRefinementEngine]: Strategy WOLF found a feasible trace [2019-10-22 08:55:59,309 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:55:59,509 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-10-22 08:55:59,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:55:59 BoogieIcfgContainer [2019-10-22 08:55:59,550 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:55:59,551 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:55:59,551 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:55:59,551 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:55:59,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:55:55" (3/4) ... [2019-10-22 08:55:59,553 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:55:59,623 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_14d29fcb-4b2a-49e9-a8aa-8618e1a18a21/bin/uautomizer/witness.graphml [2019-10-22 08:55:59,626 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:55:59,628 INFO L168 Benchmark]: Toolchain (without parser) took 4885.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 951.0 MB in the beginning and 909.7 MB in the end (delta: 41.3 MB). Peak memory consumption was 202.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,628 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:59,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,630 INFO L168 Benchmark]: Boogie Preprocessor took 36.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,631 INFO L168 Benchmark]: RCFGBuilder took 429.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,631 INFO L168 Benchmark]: TraceAbstraction took 3992.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.7 MB in the end (delta: 214.2 MB). Peak memory consumption was 214.2 MB. Max. memory is 11.5 GB. [2019-10-22 08:55:59,631 INFO L168 Benchmark]: Witness Printer took 75.19 ms. Allocated memory is still 1.2 GB. Free memory is still 909.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:55:59,633 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 250.81 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 934.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 97.65 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -222.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 429.13 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3992.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 909.7 MB in the end (delta: 214.2 MB). Peak memory consumption was 214.2 MB. Max. memory is 11.5 GB. * Witness Printer took 75.19 ms. Allocated memory is still 1.2 GB. Free memory is still 909.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 85]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L79] double x = 0.0; [L80] double y = -0.0; [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L52] COND FALSE !(__fpclassify_double(x) == 0) [L24] __uint32_t msw, lsw; [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L35] return 2; [L54] COND FALSE !(__fpclassify_double(y) == 0) [L57] EXPR x > y ? x : y [L57] return x > y ? x : y; [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L61] __uint32_t msw; [L64] ieee_double_shape_type gh_u; [L65] gh_u.value = (x) [L66] EXPR gh_u.parts.msw [L66] (msw) = gh_u.parts.msw [L69] return (msw & 0x80000000) != 0; [L84] EXPR res == 0.0 && __signbit_double(res) == 0 [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.9s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 290 SDslu, 362 SDs, 0 SdLazy, 112 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 12524 SizeOfPredicates, 27 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...