./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-a4ecdab [2020-11-29 18:24:52,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:24:52,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:24:52,864 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:24:52,865 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:24:52,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:24:52,874 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:24:52,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:24:52,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:24:52,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:24:52,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:24:52,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:24:52,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:24:52,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:24:52,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:24:52,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:24:52,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:24:52,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:24:52,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:24:52,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:24:52,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:24:52,930 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:24:52,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:24:52,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:24:52,947 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:24:52,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:24:52,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:24:52,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:24:52,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:24:52,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:24:52,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:24:52,956 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:24:52,959 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:24:52,960 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:24:52,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:24:52,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:24:52,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:24:52,964 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:24:52,964 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:24:52,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:24:52,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:24:52,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 18:24:53,019 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:24:53,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:24:53,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:24:53,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:24:53,023 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:24:53,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:24:53,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:24:53,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 18:24:53,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:24:53,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:24:53,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:24:53,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:24:53,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:24:53,027 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:24:53,027 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:24:53,027 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:24:53,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:24:53,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:24:53,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:24:53,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:24:53,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:24:53,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:24:53,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:24:53,041 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:24:53,041 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:24:53,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 18:24:53,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 18:24:53,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:24:53,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:24:53,045 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-29 18:24:53,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:24:53,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:24:53,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:24:53,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:24:53,480 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:24:53,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-29 18:24:53,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/c5f9aff61/809e564ce7d94e2f91808f38c246ce80/FLAG6f1784c8e [2020-11-29 18:24:54,114 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:24:54,115 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-29 18:24:54,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/c5f9aff61/809e564ce7d94e2f91808f38c246ce80/FLAG6f1784c8e [2020-11-29 18:24:54,481 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/c5f9aff61/809e564ce7d94e2f91808f38c246ce80 [2020-11-29 18:24:54,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:24:54,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:24:54,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:24:54,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:24:54,499 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:24:54,500 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a202e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54, skipping insertion in model container [2020-11-29 18:24:54,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,515 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:24:54,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:24:54,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:24:54,816 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:24:54,850 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:24:54,869 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:24:54,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54 WrapperNode [2020-11-29 18:24:54,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:24:54,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:24:54,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:24:54,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:24:54,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:24:54,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:24:54,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:24:54,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:24:54,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:54,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:55,012 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:55,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:55,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... [2020-11-29 18:24:55,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:24:55,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:24:55,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:24:55,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:24:55,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:24:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 18:24:55,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:24:55,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 18:24:55,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:24:55,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:24:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 18:24:55,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:24:55,718 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:24:55,719 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 18:24:55,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:55 BoogieIcfgContainer [2020-11-29 18:24:55,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:24:55,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:24:55,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:24:55,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:24:55,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:24:54" (1/3) ... [2020-11-29 18:24:55,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d39a363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:55, skipping insertion in model container [2020-11-29 18:24:55,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:24:54" (2/3) ... [2020-11-29 18:24:55,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d39a363 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:24:55, skipping insertion in model container [2020-11-29 18:24:55,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:55" (3/3) ... [2020-11-29 18:24:55,741 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-29 18:24:55,757 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:24:55,763 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:24:55,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:24:55,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:24:55,809 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:24:55,809 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:24:55,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:24:55,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:24:55,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:24:55,810 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:24:55,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:24:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 18:24:55,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:24:55,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:55,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:55,833 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:55,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:55,854 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 18:24:55,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:55,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536839332] [2020-11-29 18:24:55,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:56,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:24:56,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536839332] [2020-11-29 18:24:56,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:24:56,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 18:24:56,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618486577] [2020-11-29 18:24:56,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:24:56,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:56,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:24:56,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:24:56,099 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 18:24:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:56,128 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 18:24:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:24:56,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 18:24:56,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:56,153 INFO L225 Difference]: With dead ends: 63 [2020-11-29 18:24:56,153 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 18:24:56,156 INFO L677 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 [2020-11-29 18:24:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 18:24:56,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 18:24:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:24:56,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 18:24:56,211 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 18:24:56,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:56,213 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 18:24:56,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:24:56,213 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 18:24:56,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:24:56,215 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:56,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:56,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 18:24:56,216 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:56,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:56,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 18:24:56,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:56,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464240161] [2020-11-29 18:24:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:56,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:56,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:24:56,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464240161] [2020-11-29 18:24:56,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:24:56,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:24:56,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261517348] [2020-11-29 18:24:56,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:24:56,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:56,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:24:56,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:24:56,383 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-11-29 18:24:56,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:56,482 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-11-29 18:24:56,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:24:56,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 18:24:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:56,484 INFO L225 Difference]: With dead ends: 53 [2020-11-29 18:24:56,484 INFO L226 Difference]: Without dead ends: 44 [2020-11-29 18:24:56,486 INFO L677 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 [2020-11-29 18:24:56,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-29 18:24:56,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-11-29 18:24:56,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:24:56,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 18:24:56,493 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 18:24:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:56,493 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 18:24:56,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:24:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 18:24:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 18:24:56,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:56,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:56,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 18:24:56,496 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:56,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:56,497 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-11-29 18:24:56,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:56,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845796348] [2020-11-29 18:24:56,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:24:56,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845796348] [2020-11-29 18:24:56,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:24:56,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:24:56,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854061709] [2020-11-29 18:24:56,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:24:56,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:56,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:24:56,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:24:56,601 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 18:24:56,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:56,713 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 18:24:56,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:24:56,716 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 18:24:56,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:56,717 INFO L225 Difference]: With dead ends: 55 [2020-11-29 18:24:56,717 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 18:24:56,718 INFO L677 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 [2020-11-29 18:24:56,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 18:24:56,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 18:24:56,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:24:56,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 18:24:56,739 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-11-29 18:24:56,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:56,741 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 18:24:56,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:24:56,741 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 18:24:56,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 18:24:56,744 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:56,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:56,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 18:24:56,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:56,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:56,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-11-29 18:24:56,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:56,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464160223] [2020-11-29 18:24:56,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:56,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:24:56,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464160223] [2020-11-29 18:24:56,889 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:24:56,889 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:24:56,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634944370] [2020-11-29 18:24:56,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:24:56,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:56,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:24:56,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:24:56,891 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 18:24:57,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:57,030 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-11-29 18:24:57,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:24:57,034 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-29 18:24:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:57,036 INFO L225 Difference]: With dead ends: 57 [2020-11-29 18:24:57,036 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 18:24:57,037 INFO L677 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 [2020-11-29 18:24:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 18:24:57,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-11-29 18:24:57,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:24:57,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 18:24:57,044 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-11-29 18:24:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:57,044 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 18:24:57,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:24:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 18:24:57,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:24:57,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:57,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:57,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 18:24:57,046 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-11-29 18:24:57,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:57,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909433313] [2020-11-29 18:24:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:24:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:24:57,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909433313] [2020-11-29 18:24:57,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:24:57,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 18:24:57,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256761892] [2020-11-29 18:24:57,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:24:57,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 18:24:57,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:24:57,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:24:57,118 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 18:24:57,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:24:57,185 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-11-29 18:24:57,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:24:57,188 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 18:24:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:24:57,189 INFO L225 Difference]: With dead ends: 55 [2020-11-29 18:24:57,189 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 18:24:57,190 INFO L677 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 [2020-11-29 18:24:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 18:24:57,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-11-29 18:24:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:24:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 18:24:57,196 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-11-29 18:24:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:24:57,197 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 18:24:57,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:24:57,197 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 18:24:57,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:24:57,198 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:24:57,198 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:24:57,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 18:24:57,199 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:24:57,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:24:57,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 18:24:57,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 18:24:57,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315324279] [2020-11-29 18:24:57,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 18:24:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:57,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:24:57,255 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:24:57,279 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 18:24:57,280 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:24:57,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 18:24:57,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:24:57 BoogieIcfgContainer [2020-11-29 18:24:57,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:24:57,314 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:24:57,314 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:24:57,314 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:24:57,315 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:24:55" (3/4) ... [2020-11-29 18:24:57,318 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 18:24:57,319 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:24:57,321 INFO L168 Benchmark]: Toolchain (without parser) took 2832.70 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 65.2 MB in the beginning and 69.5 MB in the end (delta: -4.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,322 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:57,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.05 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 69.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.63 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,324 INFO L168 Benchmark]: Boogie Preprocessor took 55.04 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 65.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,325 INFO L168 Benchmark]: RCFGBuilder took 688.48 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 46.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,326 INFO L168 Benchmark]: TraceAbstraction took 1589.85 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 46.3 MB in the beginning and 69.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 310.3 kB. Max. memory is 16.1 GB. [2020-11-29 18:24:57,326 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 113.2 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:24:57,330 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 92.3 MB. Free memory was 49.7 MB in the beginning and 49.7 MB in the end (delta: 44.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.05 ms. Allocated memory is still 92.3 MB. Free memory was 64.9 MB in the beginning and 69.3 MB in the end (delta: -4.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.63 ms. Allocated memory is still 92.3 MB. Free memory was 69.3 MB in the beginning and 67.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.04 ms. Allocated memory is still 92.3 MB. Free memory was 67.6 MB in the beginning and 65.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 688.48 ms. Allocated memory is still 92.3 MB. Free memory was 65.9 MB in the beginning and 46.7 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1589.85 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 46.3 MB in the beginning and 69.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 310.3 kB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 113.2 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 60 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: 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 0.2.0-a4ecdab [2020-11-29 18:25:00,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 18:25:00,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 18:25:00,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 18:25:00,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 18:25:00,405 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 18:25:00,407 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 18:25:00,410 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 18:25:00,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 18:25:00,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 18:25:00,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 18:25:00,418 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 18:25:00,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 18:25:00,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 18:25:00,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 18:25:00,424 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 18:25:00,425 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 18:25:00,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 18:25:00,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 18:25:00,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 18:25:00,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 18:25:00,437 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 18:25:00,439 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 18:25:00,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 18:25:00,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 18:25:00,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 18:25:00,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 18:25:00,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 18:25:00,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 18:25:00,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 18:25:00,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 18:25:00,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 18:25:00,453 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 18:25:00,454 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 18:25:00,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 18:25:00,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 18:25:00,458 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 18:25:00,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 18:25:00,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 18:25:00,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 18:25:00,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 18:25:00,463 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 18:25:00,494 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 18:25:00,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 18:25:00,496 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 18:25:00,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 18:25:00,498 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 18:25:00,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 18:25:00,499 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 18:25:00,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 18:25:00,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 18:25:00,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 18:25:00,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 18:25:00,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 18:25:00,502 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 18:25:00,502 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 18:25:00,502 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 18:25:00,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 18:25:00,503 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 18:25:00,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 18:25:00,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 18:25:00,505 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 18:25:00,505 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 18:25:00,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 18:25:00,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 18:25:00,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 18:25:00,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 18:25:00,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 18:25:00,508 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 18:25:00,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 18:25:00,509 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 18:25:00,510 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 18:25:00,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 18:25:00,511 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-29 18:25:01,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 18:25:01,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 18:25:01,057 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 18:25:01,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 18:25:01,061 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 18:25:01,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-29 18:25:01,150 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/277c77727/f622f296654b4c39a1d1eabc7251779b/FLAG8b8544cb0 [2020-11-29 18:25:01,807 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 18:25:01,810 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-29 18:25:01,819 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/277c77727/f622f296654b4c39a1d1eabc7251779b/FLAG8b8544cb0 [2020-11-29 18:25:02,123 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/data/277c77727/f622f296654b4c39a1d1eabc7251779b [2020-11-29 18:25:02,127 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 18:25:02,129 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 18:25:02,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:02,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 18:25:02,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 18:25:02,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5356bf91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02, skipping insertion in model container [2020-11-29 18:25:02,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,154 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 18:25:02,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 18:25:02,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:02,388 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 18:25:02,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 18:25:02,446 INFO L208 MainTranslator]: Completed translation [2020-11-29 18:25:02,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02 WrapperNode [2020-11-29 18:25:02,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 18:25:02,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:02,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 18:25:02,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 18:25:02,461 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 18:25:02,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 18:25:02,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 18:25:02,582 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 18:25:02,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... [2020-11-29 18:25:02,652 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 18:25:02,662 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 18:25:02,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 18:25:02,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 18:25:02,663 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:02,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 18:25:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 18:25:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 18:25:02,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 18:25:02,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 18:25:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-29 18:25:02,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 18:25:03,510 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 18:25:03,510 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 18:25:03,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:03 BoogieIcfgContainer [2020-11-29 18:25:03,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 18:25:03,514 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 18:25:03,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 18:25:03,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 18:25:03,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 06:25:02" (1/3) ... [2020-11-29 18:25:03,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a72c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:03, skipping insertion in model container [2020-11-29 18:25:03,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 06:25:02" (2/3) ... [2020-11-29 18:25:03,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a72c17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 06:25:03, skipping insertion in model container [2020-11-29 18:25:03,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:03" (3/3) ... [2020-11-29 18:25:03,522 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-29 18:25:03,535 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 18:25:03,540 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 18:25:03,555 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 18:25:03,583 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 18:25:03,583 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 18:25:03,583 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 18:25:03,584 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 18:25:03,584 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 18:25:03,584 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 18:25:03,584 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 18:25:03,584 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 18:25:03,599 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-29 18:25:03,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 18:25:03,606 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:03,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:03,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:03,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:03,614 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-29 18:25:03,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:03,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797907603] [2020-11-29 18:25:03,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:03,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 18:25:03,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:03,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:03,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:03,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:03,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797907603] [2020-11-29 18:25:03,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:03,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 18:25:03,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278046336] [2020-11-29 18:25:03,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 18:25:03,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:03,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 18:25:03,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 18:25:03,823 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-29 18:25:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:03,845 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-29 18:25:03,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 18:25:03,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 18:25:03,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:03,858 INFO L225 Difference]: With dead ends: 63 [2020-11-29 18:25:03,859 INFO L226 Difference]: Without dead ends: 29 [2020-11-29 18:25:03,862 INFO L677 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 [2020-11-29 18:25:03,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-29 18:25:03,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-29 18:25:03,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-29 18:25:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-29 18:25:03,902 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-29 18:25:03,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:03,903 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-29 18:25:03,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 18:25:03,903 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-29 18:25:03,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 18:25:03,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:03,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:04,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 18:25:04,129 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:04,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:04,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-29 18:25:04,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:04,133 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033578731] [2020-11-29 18:25:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:04,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 18:25:04,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:04,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:04,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033578731] [2020-11-29 18:25:04,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:04,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 18:25:04,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867637226] [2020-11-29 18:25:04,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:04,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:04,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:04,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:04,510 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-29 18:25:04,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:04,721 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-29 18:25:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:04,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 18:25:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:04,727 INFO L225 Difference]: With dead ends: 68 [2020-11-29 18:25:04,727 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 18:25:04,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 18:25:04,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 18:25:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-29 18:25:04,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 18:25:04,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-29 18:25:04,750 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-29 18:25:04,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:04,751 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-29 18:25:04,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:04,752 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-29 18:25:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 18:25:04,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:04,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:04,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 18:25:04,981 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-29 18:25:04,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:04,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177293320] [2020-11-29 18:25:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:05,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:25:05,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:05,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:05,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177293320] [2020-11-29 18:25:05,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:05,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-29 18:25:05,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551943999] [2020-11-29 18:25:05,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:25:05,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:05,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:25:05,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:25:05,181 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-29 18:25:05,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:05,289 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-29 18:25:05,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 18:25:05,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-29 18:25:05,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:05,291 INFO L225 Difference]: With dead ends: 52 [2020-11-29 18:25:05,291 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 18:25:05,292 INFO L677 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 [2020-11-29 18:25:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 18:25:05,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-29 18:25:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-29 18:25:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-29 18:25:05,298 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-29 18:25:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:05,298 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-29 18:25:05,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:25:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-29 18:25:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 18:25:05,300 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:05,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:05,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 18:25:05,504 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:05,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:05,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-29 18:25:05,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:05,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867846533] [2020-11-29 18:25:05,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:05,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 18:25:05,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:05,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:05,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867846533] [2020-11-29 18:25:05,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:05,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-29 18:25:05,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621275252] [2020-11-29 18:25:05,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 18:25:05,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:05,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 18:25:05,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 18:25:05,686 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-29 18:25:05,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:05,850 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-29 18:25:05,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 18:25:05,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-29 18:25:05,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:05,855 INFO L225 Difference]: With dead ends: 61 [2020-11-29 18:25:05,857 INFO L226 Difference]: Without dead ends: 52 [2020-11-29 18:25:05,858 INFO L677 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 [2020-11-29 18:25:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-29 18:25:05,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-29 18:25:05,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 18:25:05,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-29 18:25:05,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-29 18:25:05,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:05,871 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-29 18:25:05,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 18:25:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-29 18:25:05,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:25:05,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:05,875 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:06,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 18:25:06,097 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:06,098 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-29 18:25:06,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:06,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693512988] [2020-11-29 18:25:06,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:06,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 18:25:06,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:06,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:06,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693512988] [2020-11-29 18:25:06,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:06,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 18:25:06,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566926342] [2020-11-29 18:25:06,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 18:25:06,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:06,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 18:25:06,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 18:25:06,301 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-29 18:25:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:06,318 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-29 18:25:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 18:25:06,319 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-29 18:25:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:06,320 INFO L225 Difference]: With dead ends: 38 [2020-11-29 18:25:06,320 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 18:25:06,321 INFO L677 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 [2020-11-29 18:25:06,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 18:25:06,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 18:25:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 18:25:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-29 18:25:06,327 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-29 18:25:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:06,327 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-29 18:25:06,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 18:25:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-29 18:25:06,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 18:25:06,328 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:06,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:06,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 18:25:06,541 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:06,542 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-29 18:25:06,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:06,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519157222] [2020-11-29 18:25:06,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:06,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 18:25:06,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:06,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:06,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:06,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519157222] [2020-11-29 18:25:06,840 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:06,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-29 18:25:06,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653475010] [2020-11-29 18:25:06,841 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 18:25:06,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:06,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 18:25:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-29 18:25:06,843 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-29 18:25:07,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:07,004 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-29 18:25:07,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 18:25:07,005 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-29 18:25:07,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:07,006 INFO L225 Difference]: With dead ends: 40 [2020-11-29 18:25:07,006 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 18:25:07,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-29 18:25:07,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 18:25:07,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-29 18:25:07,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 18:25:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-29 18:25:07,013 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-29 18:25:07,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:07,014 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-29 18:25:07,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 18:25:07,014 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-29 18:25:07,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-29 18:25:07,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:07,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 18:25:07,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-29 18:25:07,228 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:07,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:07,229 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-29 18:25:07,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:07,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133771341] [2020-11-29 18:25:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 18:25:07,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 18:25:07,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 18:25:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:07,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 18:25:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 18:25:07,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133771341] [2020-11-29 18:25:07,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 18:25:07,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-29 18:25:07,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881978325] [2020-11-29 18:25:07,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 18:25:07,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 18:25:07,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 18:25:07,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 18:25:07,465 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-29 18:25:07,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 18:25:07,554 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-29 18:25:07,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 18:25:07,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-29 18:25:07,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 18:25:07,556 INFO L225 Difference]: With dead ends: 43 [2020-11-29 18:25:07,556 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 18:25:07,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 18:25:07,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 18:25:07,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-29 18:25:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-29 18:25:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-29 18:25:07,561 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-29 18:25:07,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 18:25:07,561 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-29 18:25:07,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 18:25:07,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-29 18:25:07,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-29 18:25:07,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 18:25:07,562 INFO L422 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] [2020-11-29 18:25:07,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-29 18:25:07,779 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 18:25:07,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 18:25:07,780 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-29 18:25:07,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 18:25:07,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838390036] [2020-11-29 18:25:07,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/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 [2020-11-29 18:25:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:25:07,949 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:25:08,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 18:25:08,108 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 18:25:08,170 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 18:25:08,171 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 18:25:08,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-29 18:25:08,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 06:25:08 BoogieIcfgContainer [2020-11-29 18:25:08,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 18:25:08,440 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 18:25:08,440 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 18:25:08,441 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 18:25:08,441 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 06:25:03" (3/4) ... [2020-11-29 18:25:08,444 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 18:25:08,503 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_850cf9ea-087f-4648-85cd-b0efc0be430e/bin/uautomizer/witness.graphml [2020-11-29 18:25:08,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 18:25:08,506 INFO L168 Benchmark]: Toolchain (without parser) took 6376.01 ms. Allocated memory was 54.5 MB in the beginning and 83.9 MB in the end (delta: 29.4 MB). Free memory was 32.2 MB in the beginning and 36.9 MB in the end (delta: -4.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,507 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:25:08,508 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.69 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,509 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.12 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 53.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,509 INFO L168 Benchmark]: Boogie Preprocessor took 79.36 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 18:25:08,510 INFO L168 Benchmark]: RCFGBuilder took 851.01 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 47.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,511 INFO L168 Benchmark]: TraceAbstraction took 4925.07 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 46.7 MB in the beginning and 39.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,511 INFO L168 Benchmark]: Witness Printer took 63.95 ms. Allocated memory is still 83.9 MB. Free memory was 39.5 MB in the beginning and 36.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 18:25:08,515 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 54.5 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.69 ms. Allocated memory is still 54.5 MB. Free memory was 32.1 MB in the beginning and 35.1 MB in the end (delta: -3.0 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 131.12 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 35.1 MB in the beginning and 53.2 MB in the end (delta: -18.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.36 ms. Allocated memory is still 69.2 MB. Free memory was 53.2 MB in the beginning and 51.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 851.01 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 47.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4925.07 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 46.7 MB in the beginning and 39.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. * Witness Printer took 63.95 ms. Allocated memory is still 83.9 MB. Free memory was 39.5 MB in the beginning and 36.9 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L46] COND FALSE !(__fpclassify_float(x) == 0) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] EXPR x > y ? x : y [L53] return x > y ? x : y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L57] __uint32_t w; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 175 SDslu, 301 SDs, 0 SdLazy, 100 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7973 SizeOfPredicates, 27 NumberOfNonLiveVariables, 433 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...