./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 36a0a55241cede481b157c1ab9f348d708a5b166 .......................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 36a0a55241cede481b157c1ab9f348d708a5b166 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.25-f470102 [2019-12-07 15:44:33,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:44:33,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:44:33,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:44:33,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:44:33,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:44:33,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:44:33,843 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:44:33,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:44:33,845 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:44:33,846 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:44:33,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:44:33,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:44:33,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:44:33,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:44:33,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:44:33,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:44:33,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:44:33,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:44:33,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:44:33,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:44:33,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:44:33,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:44:33,856 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:44:33,857 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:44:33,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:44:33,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:44:33,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:44:33,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:44:33,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:44:33,859 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:44:33,860 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:44:33,860 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:44:33,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:44:33,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:44:33,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:44:33,862 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:44:33,862 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:44:33,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:44:33,863 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:44:33,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:44:33,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 15:44:33,877 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:44:33,877 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:44:33,878 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:44:33,878 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:44:33,878 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:44:33,879 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:44:33,879 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:44:33,879 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 15:44:33,879 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:44:33,879 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:44:33,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:44:33,880 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:44:33,880 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:44:33,880 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:44:33,880 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:44:33,880 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:44:33,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:44:33,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:44:33,881 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:44:33,881 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:44:33,881 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:44:33,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:44:33,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:44:33,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:44:33,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:44:33,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 15:44:33,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 15:44:33,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:44:33,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:44:33,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-12-07 15:44:33,994 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:44:34,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:44:34,004 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:44:34,005 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:44:34,005 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:44:34,006 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-12-07 15:44:34,044 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4b63cf383/ee06a71db494473fa280e5a9ccd1ee95/FLAGbdef5e7b8 [2019-12-07 15:44:34,429 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:44:34,430 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-12-07 15:44:34,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4b63cf383/ee06a71db494473fa280e5a9ccd1ee95/FLAGbdef5e7b8 [2019-12-07 15:44:34,820 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4b63cf383/ee06a71db494473fa280e5a9ccd1ee95 [2019-12-07 15:44:34,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:44:34,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:44:34,823 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:34,823 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:44:34,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:44:34,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ecae9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:34, skipping insertion in model container [2019-12-07 15:44:34,828 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:34" (1/1) ... [2019-12-07 15:44:34,832 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:44:34,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:44:34,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:34,953 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:44:35,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:35,015 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:44:35,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35 WrapperNode [2019-12-07 15:44:35,016 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:35,016 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:35,017 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:44:35,017 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:44:35,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,028 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:35,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:44:35,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:44:35,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:44:35,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... [2019-12-07 15:44:35,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:44:35,066 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:44:35,066 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:44:35,066 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:44:35,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:44:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2019-12-07 15:44:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:44:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:44:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 15:44:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:44:35,299 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:44:35,300 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:44:35,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:35 BoogieIcfgContainer [2019-12-07 15:44:35,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:44:35,301 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:44:35,301 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:44:35,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:44:35,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:44:34" (1/3) ... [2019-12-07 15:44:35,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec4195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:35, skipping insertion in model container [2019-12-07 15:44:35,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:35" (2/3) ... [2019-12-07 15:44:35,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ec4195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:35, skipping insertion in model container [2019-12-07 15:44:35,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:35" (3/3) ... [2019-12-07 15:44:35,305 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-12-07 15:44:35,311 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:44:35,316 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:44:35,323 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:44:35,337 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:44:35,337 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:44:35,337 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:44:35,337 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:44:35,337 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:44:35,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:44:35,338 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:44:35,338 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:44:35,347 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 15:44:35,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:44:35,351 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:35,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:35,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:35,355 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 15:44:35,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:35,361 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040673540] [2019-12-07 15:44:35,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:35,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:35,442 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040673540] [2019-12-07 15:44:35,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:35,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 15:44:35,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106725214] [2019-12-07 15:44:35,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:44:35,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:35,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:44:35,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:44:35,456 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 15:44:35,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:35,469 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 15:44:35,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:44:35,470 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:44:35,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:35,476 INFO L225 Difference]: With dead ends: 62 [2019-12-07 15:44:35,476 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:44:35,478 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:44:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:44:35,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:44:35,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:44:35,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 15:44:35,501 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 15:44:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:35,501 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 15:44:35,501 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:44:35,502 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 15:44:35,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:44:35,502 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:35,502 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:35,502 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:35,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 15:44:35,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:35,503 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470630322] [2019-12-07 15:44:35,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:35,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:35,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470630322] [2019-12-07 15:44:35,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:35,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:44:35,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735096298] [2019-12-07 15:44:35,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:44:35,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:35,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:44:35,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:35,549 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2019-12-07 15:44:35,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:35,587 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2019-12-07 15:44:35,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:44:35,588 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 15:44:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:35,588 INFO L225 Difference]: With dead ends: 53 [2019-12-07 15:44:35,588 INFO L226 Difference]: Without dead ends: 44 [2019-12-07 15:44:35,589 INFO L630 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 [2019-12-07 15:44:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-12-07 15:44:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2019-12-07 15:44:35,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:44:35,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:44:35,594 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 15:44:35,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:35,594 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:44:35,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:44:35,594 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:44:35,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:44:35,595 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:35,595 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:35,595 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:35,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:35,595 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2019-12-07 15:44:35,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:35,595 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355330944] [2019-12-07 15:44:35,596 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:35,626 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355330944] [2019-12-07 15:44:35,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:35,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 15:44:35,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62375494] [2019-12-07 15:44:35,627 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:44:35,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 15:44:35,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:44:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:35,628 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 15:44:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:35,662 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2019-12-07 15:44:35,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:44:35,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 15:44:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:35,663 INFO L225 Difference]: With dead ends: 55 [2019-12-07 15:44:35,664 INFO L226 Difference]: Without dead ends: 46 [2019-12-07 15:44:35,664 INFO L630 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 [2019-12-07 15:44:35,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-12-07 15:44:35,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2019-12-07 15:44:35,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:44:35,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:44:35,669 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2019-12-07 15:44:35,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:35,669 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:44:35,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:44:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:44:35,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:44:35,670 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:35,670 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:35,670 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:35,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:35,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 15:44:35,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 15:44:35,671 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862733521] [2019-12-07 15:44:35,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 15:44:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:35,721 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 15:44:35,721 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:44:35,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:44:35 BoogieIcfgContainer [2019-12-07 15:44:35,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:44:35,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:44:35,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:44:35,739 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:44:35,739 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:35" (3/4) ... [2019-12-07 15:44:35,742 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 15:44:35,742 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:44:35,743 INFO L168 Benchmark]: Toolchain (without parser) took 920.17 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 943.5 MB in the beginning and 1.0 GB in the end (delta: -73.3 MB). Peak memory consumption was 20.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:35,744 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:35,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 193.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -144.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:35,744 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.20 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. [2019-12-07 15:44:35,745 INFO L168 Benchmark]: Boogie Preprocessor took 19.60 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:35,745 INFO L168 Benchmark]: RCFGBuilder took 235.00 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:35,746 INFO L168 Benchmark]: TraceAbstraction took 437.53 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:35,746 INFO L168 Benchmark]: Witness Printer took 2.82 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. [2019-12-07 15:44:35,748 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 958.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 193.11 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 943.5 MB in the beginning and 1.1 GB in the end (delta: -144.6 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.20 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. * Boogie Preprocessor took 19.60 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: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 235.00 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: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 437.53 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: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 11.5 GB. * Witness Printer took 2.82 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: 70]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 69, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L23-L24] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L26-L27] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L29] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L32] return 0; [L36] COND TRUE __fpclassify_float(x) == 0 [L37] return y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.3s, 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, 0.0s 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 0.1.25-f470102 [2019-12-07 15:44:37,110 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 15:44:37,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 15:44:37,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 15:44:37,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 15:44:37,121 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 15:44:37,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 15:44:37,124 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 15:44:37,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 15:44:37,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 15:44:37,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 15:44:37,128 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 15:44:37,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 15:44:37,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 15:44:37,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 15:44:37,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 15:44:37,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 15:44:37,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 15:44:37,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 15:44:37,137 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 15:44:37,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 15:44:37,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 15:44:37,140 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 15:44:37,141 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 15:44:37,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 15:44:37,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 15:44:37,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 15:44:37,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 15:44:37,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 15:44:37,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 15:44:37,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 15:44:37,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 15:44:37,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 15:44:37,147 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 15:44:37,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 15:44:37,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 15:44:37,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 15:44:37,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 15:44:37,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 15:44:37,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 15:44:37,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 15:44:37,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 15:44:37,162 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 15:44:37,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 15:44:37,163 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 15:44:37,163 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 15:44:37,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 15:44:37,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 15:44:37,165 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 15:44:37,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 15:44:37,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 15:44:37,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 15:44:37,166 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 15:44:37,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 15:44:37,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 15:44:37,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 15:44:37,167 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 -> 36a0a55241cede481b157c1ab9f348d708a5b166 [2019-12-07 15:44:37,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 15:44:37,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 15:44:37,352 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 15:44:37,353 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 15:44:37,353 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 15:44:37,354 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-12-07 15:44:37,390 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4a413a8c2/c4ac993466d64948ae775283831f8bdc/FLAGdeb2e184b [2019-12-07 15:44:37,726 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 15:44:37,726 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2019-12-07 15:44:37,731 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4a413a8c2/c4ac993466d64948ae775283831f8bdc/FLAGdeb2e184b [2019-12-07 15:44:37,739 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/data/4a413a8c2/c4ac993466d64948ae775283831f8bdc [2019-12-07 15:44:37,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 15:44:37,742 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 15:44:37,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:37,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 15:44:37,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 15:44:37,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41944eff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37, skipping insertion in model container [2019-12-07 15:44:37,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 15:44:37,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 15:44:37,873 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:37,877 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 15:44:37,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 15:44:37,910 INFO L208 MainTranslator]: Completed translation [2019-12-07 15:44:37,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37 WrapperNode [2019-12-07 15:44:37,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 15:44:37,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:37,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 15:44:37,912 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 15:44:37,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,924 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 15:44:37,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 15:44:37,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 15:44:37,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 15:44:37,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,978 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,987 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... [2019-12-07 15:44:37,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 15:44:37,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 15:44:37,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 15:44:37,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 15:44:37,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 15:44:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 15:44:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 15:44:38,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 15:44:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2019-12-07 15:44:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 15:44:38,246 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 15:44:38,246 INFO L287 CfgBuilder]: Removed 18 assume(true) statements. [2019-12-07 15:44:38,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:38 BoogieIcfgContainer [2019-12-07 15:44:38,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 15:44:38,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 15:44:38,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 15:44:38,250 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 15:44:38,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 03:44:37" (1/3) ... [2019-12-07 15:44:38,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f27a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:38, skipping insertion in model container [2019-12-07 15:44:38,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 03:44:37" (2/3) ... [2019-12-07 15:44:38,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f27a7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 03:44:38, skipping insertion in model container [2019-12-07 15:44:38,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:38" (3/3) ... [2019-12-07 15:44:38,253 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2019-12-07 15:44:38,260 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 15:44:38,264 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 15:44:38,271 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 15:44:38,286 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 15:44:38,286 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 15:44:38,286 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 15:44:38,286 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 15:44:38,287 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 15:44:38,287 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 15:44:38,287 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 15:44:38,287 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 15:44:38,296 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2019-12-07 15:44:38,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 15:44:38,300 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:38,301 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:38,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:38,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:38,305 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2019-12-07 15:44:38,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:38,312 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599852501] [2019-12-07 15:44:38,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:38,362 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2019-12-07 15:44:38,366 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:38,376 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:38,379 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599852501] [2019-12-07 15:44:38,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:38,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 15:44:38,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056730089] [2019-12-07 15:44:38,383 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 15:44:38,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:38,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 15:44:38,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 15:44:38,393 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2019-12-07 15:44:38,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:38,406 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2019-12-07 15:44:38,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 15:44:38,407 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-12-07 15:44:38,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:38,415 INFO L225 Difference]: With dead ends: 62 [2019-12-07 15:44:38,415 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 15:44:38,417 INFO L630 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 [2019-12-07 15:44:38,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 15:44:38,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 15:44:38,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 15:44:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2019-12-07 15:44:38,442 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2019-12-07 15:44:38,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:38,443 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2019-12-07 15:44:38,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 15:44:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2019-12-07 15:44:38,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 15:44:38,444 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:38,444 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:38,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 15:44:38,645 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:38,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:38,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2019-12-07 15:44:38,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:38,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102031144] [2019-12-07 15:44:38,647 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:38,727 INFO L264 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:44:38,729 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:38,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:38,763 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:38,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:38,777 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102031144] [2019-12-07 15:44:38,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:38,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:44:38,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267865755] [2019-12-07 15:44:38,778 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:44:38,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:38,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:44:38,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:44:38,779 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2019-12-07 15:44:38,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:38,854 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2019-12-07 15:44:38,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:44:38,855 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 15:44:38,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:38,856 INFO L225 Difference]: With dead ends: 68 [2019-12-07 15:44:38,856 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 15:44:38,857 INFO L630 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 [2019-12-07 15:44:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 15:44:38,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2019-12-07 15:44:38,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 15:44:38,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2019-12-07 15:44:38,864 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2019-12-07 15:44:38,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:38,864 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2019-12-07 15:44:38,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:44:38,865 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2019-12-07 15:44:38,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 15:44:38,866 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:38,866 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:39,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 15:44:39,068 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:39,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:39,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2019-12-07 15:44:39,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:39,070 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973571780] [2019-12-07 15:44:39,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:39,148 INFO L264 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:44:39,151 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,177 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,204 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973571780] [2019-12-07 15:44:39,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:39,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 15:44:39,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143972908] [2019-12-07 15:44:39,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:44:39,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:39,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:44:39,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:39,205 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2019-12-07 15:44:39,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:39,249 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2019-12-07 15:44:39,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 15:44:39,249 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-12-07 15:44:39,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:39,250 INFO L225 Difference]: With dead ends: 52 [2019-12-07 15:44:39,250 INFO L226 Difference]: Without dead ends: 26 [2019-12-07 15:44:39,251 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:44:39,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-12-07 15:44:39,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-12-07 15:44:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-12-07 15:44:39,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2019-12-07 15:44:39,255 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2019-12-07 15:44:39,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:39,255 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2019-12-07 15:44:39,255 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:44:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2019-12-07 15:44:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 15:44:39,256 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:39,256 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:39,457 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 15:44:39,457 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2019-12-07 15:44:39,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:39,459 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42996159] [2019-12-07 15:44:39,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:39,546 INFO L264 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 15:44:39,547 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:39,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,557 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [42996159] [2019-12-07 15:44:39,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:39,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-12-07 15:44:39,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909394] [2019-12-07 15:44:39,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 15:44:39,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:39,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 15:44:39,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 15:44:39,570 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2019-12-07 15:44:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:39,618 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-12-07 15:44:39,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 15:44:39,619 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 15:44:39,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:39,620 INFO L225 Difference]: With dead ends: 61 [2019-12-07 15:44:39,620 INFO L226 Difference]: Without dead ends: 52 [2019-12-07 15:44:39,621 INFO L630 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 [2019-12-07 15:44:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-12-07 15:44:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2019-12-07 15:44:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 15:44:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2019-12-07 15:44:39,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2019-12-07 15:44:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:39,626 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2019-12-07 15:44:39,626 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 15:44:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2019-12-07 15:44:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:44:39,627 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:39,627 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:39,828 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 15:44:39,828 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:39,828 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2019-12-07 15:44:39,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:39,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1909852796] [2019-12-07 15:44:39,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:39,873 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 15:44:39,874 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,884 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:39,900 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1909852796] [2019-12-07 15:44:39,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:39,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 15:44:39,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404955141] [2019-12-07 15:44:39,901 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 15:44:39,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:39,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 15:44:39,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 15:44:39,901 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2019-12-07 15:44:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:39,909 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-12-07 15:44:39,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 15:44:39,910 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-12-07 15:44:39,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:39,910 INFO L225 Difference]: With dead ends: 38 [2019-12-07 15:44:39,910 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 15:44:39,911 INFO L630 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 [2019-12-07 15:44:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 15:44:39,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 15:44:39,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 15:44:39,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2019-12-07 15:44:39,914 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2019-12-07 15:44:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:39,914 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2019-12-07 15:44:39,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 15:44:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2019-12-07 15:44:39,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 15:44:39,915 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:39,915 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:40,115 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 15:44:40,116 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:40,117 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2019-12-07 15:44:40,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:40,118 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910601104] [2019-12-07 15:44:40,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:40,207 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2019-12-07 15:44:40,208 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:40,233 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:40,234 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 15:44:40,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:40,269 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910601104] [2019-12-07 15:44:40,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:40,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-12-07 15:44:40,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502822463] [2019-12-07 15:44:40,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 15:44:40,271 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:40,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 15:44:40,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-12-07 15:44:40,272 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2019-12-07 15:44:40,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:40,348 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2019-12-07 15:44:40,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 15:44:40,348 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2019-12-07 15:44:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:40,349 INFO L225 Difference]: With dead ends: 40 [2019-12-07 15:44:40,349 INFO L226 Difference]: Without dead ends: 37 [2019-12-07 15:44:40,350 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2019-12-07 15:44:40,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-12-07 15:44:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2019-12-07 15:44:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 15:44:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 15:44:40,354 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2019-12-07 15:44:40,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:40,355 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 15:44:40,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 15:44:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 15:44:40,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 15:44:40,356 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:40,356 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:40,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 15:44:40,557 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:40,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:40,558 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2019-12-07 15:44:40,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:40,558 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279571788] [2019-12-07 15:44:40,559 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 15:44:40,638 INFO L264 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2019-12-07 15:44:40,639 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 15:44:40,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:40,657 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 15:44:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 15:44:40,674 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279571788] [2019-12-07 15:44:40,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 15:44:40,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-12-07 15:44:40,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022540634] [2019-12-07 15:44:40,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 15:44:40,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 15:44:40,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 15:44:40,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 15:44:40,675 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2019-12-07 15:44:40,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 15:44:40,717 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2019-12-07 15:44:40,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 15:44:40,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 15:44:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 15:44:40,719 INFO L225 Difference]: With dead ends: 43 [2019-12-07 15:44:40,719 INFO L226 Difference]: Without dead ends: 23 [2019-12-07 15:44:40,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 15:44:40,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-12-07 15:44:40,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-12-07 15:44:40,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-12-07 15:44:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-12-07 15:44:40,723 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2019-12-07 15:44:40,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 15:44:40,723 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-12-07 15:44:40,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 15:44:40,723 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-12-07 15:44:40,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 15:44:40,724 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 15:44:40,724 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 15:44:40,924 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 15:44:40,925 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 15:44:40,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 15:44:40,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2019-12-07 15:44:40,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 15:44:40,926 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624154347] [2019-12-07 15:44:40,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/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 [2019-12-07 15:44:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 15:44:41,112 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-12-07 15:44:41,112 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 15:44:41,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 15:44:41,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 03:44:41 BoogieIcfgContainer [2019-12-07 15:44:41,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 15:44:41,347 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 15:44:41,347 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 15:44:41,347 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 15:44:41,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 03:44:38" (3/4) ... [2019-12-07 15:44:41,349 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 15:44:41,391 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_62b4c791-f774-4a3b-b1e7-88c521b61f81/bin/uautomizer/witness.graphml [2019-12-07 15:44:41,391 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 15:44:41,393 INFO L168 Benchmark]: Toolchain (without parser) took 3650.62 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 953.7 MB in the beginning and 878.2 MB in the end (delta: 75.5 MB). Peak memory consumption was 196.1 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:41,394 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:41,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:41,394 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -166.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:41,395 INFO L168 Benchmark]: Boogie Preprocessor took 21.89 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. [2019-12-07 15:44:41,395 INFO L168 Benchmark]: RCFGBuilder took 255.98 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:41,396 INFO L168 Benchmark]: TraceAbstraction took 3098.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.2 MB in the end (delta: 205.8 MB). Peak memory consumption was 205.8 MB. Max. memory is 11.5 GB. [2019-12-07 15:44:41,396 INFO L168 Benchmark]: Witness Printer took 44.81 ms. Allocated memory is still 1.1 GB. Free memory is still 878.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 15:44:41,398 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.71 ms. Allocated memory is still 1.0 GB. Free memory was 953.7 MB in the beginning and 943.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 57.68 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 943.0 MB in the beginning and 1.1 GB in the end (delta: -166.3 MB). Peak memory consumption was 15.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.89 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 255.98 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: 25.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3098.56 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 878.2 MB in the end (delta: 205.8 MB). Peak memory consumption was 205.8 MB. Max. memory is 11.5 GB. * Witness Printer took 44.81 ms. Allocated memory is still 1.1 GB. Free memory is still 878.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 70]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L64] float x = -0.0f; [L65] float y = 0.0f; [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L36] COND FALSE !(__fpclassify_float(x) == 0) [L13] __uint32_t w; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L21] COND TRUE w == 0x00000000 || w == 0x80000000 [L22] return 2; [L38] COND FALSE !(__fpclassify_float(y) == 0) [L41] EXPR x < y ? x : y [L41] return x < y ? x : y; [L66] float res = fmin_float(x, y); [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L45] __uint32_t w; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (w) = gf_u.word [L53] return (w & 0x80000000) != 0; [L69] EXPR res == -0.0f && __signbit_float(res) == 1 [L69] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L70] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Result: UNSAFE, OverallTime: 3.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 191 SDslu, 324 SDs, 0 SdLazy, 100 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s 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, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 328 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...