./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --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_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 aff65fabc2d382d12545e3467825c9efd3fdd157 .................................................................................................................................................................................................................................... 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_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 aff65fabc2d382d12545e3467825c9efd3fdd157 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 22:40:34,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:40:34,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:40:34,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:40:34,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:40:34,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:40:34,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:40:34,637 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:40:34,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:40:34,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:40:34,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:40:34,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:40:34,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:40:34,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:40:34,658 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:40:34,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:40:34,661 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:40:34,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:40:34,670 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:40:34,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:40:34,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:40:34,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:40:34,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:40:34,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:40:34,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:40:34,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:40:34,690 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:40:34,692 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:40:34,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:40:34,694 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:40:34,695 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:40:34,696 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:40:34,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:40:34,700 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:40:34,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:40:34,702 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:40:34,703 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:40:34,703 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:40:34,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:40:34,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:40:34,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:40:34,707 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 22:40:34,748 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:40:34,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:40:34,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:40:34,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:40:34,753 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:40:34,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:40:34,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:40:34,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 22:40:34,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:40:34,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:40:34,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:40:34,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:40:34,756 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:40:34,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:40:34,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:40:34,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:40:34,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:40:34,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:40:34,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:40:34,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:40:34,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:40:34,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:40:34,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:40:34,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:40:34,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:40:34,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 22:40:34,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 22:40:34,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:40:34,760 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:40:34,760 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_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-11-29 22:40:35,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:40:35,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:40:35,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:40:35,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:40:35,142 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:40:35,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-11-29 22:40:35,223 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/e7eebddfb/8d706098234b4d5b8ac272c0a47823ea/FLAG55eb2e422 [2020-11-29 22:40:35,763 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:40:35,763 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-11-29 22:40:35,774 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/e7eebddfb/8d706098234b4d5b8ac272c0a47823ea/FLAG55eb2e422 [2020-11-29 22:40:36,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/e7eebddfb/8d706098234b4d5b8ac272c0a47823ea [2020-11-29 22:40:36,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:40:36,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:40:36,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:40:36,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:40:36,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:40:36,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30946557 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36, skipping insertion in model container [2020-11-29 22:40:36,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:40:36,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:40:36,400 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:40:36,413 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:40:36,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:40:36,443 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:40:36,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36 WrapperNode [2020-11-29 22:40:36,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:40:36,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:40:36,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:40:36,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:40:36,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,482 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:40:36,484 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:40:36,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:40:36,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:40:36,494 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... [2020-11-29 22:40:36,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:40:36,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:40:36,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:40:36,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:40:36,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:40:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 22:40:36,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:40:36,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:40:36,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:40:37,033 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:40:37,034 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:40:37,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:37 BoogieIcfgContainer [2020-11-29 22:40:37,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:40:37,040 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:40:37,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:40:37,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:40:37,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:40:36" (1/3) ... [2020-11-29 22:40:37,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598ab003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:40:37, skipping insertion in model container [2020-11-29 22:40:37,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:36" (2/3) ... [2020-11-29 22:40:37,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598ab003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:40:37, skipping insertion in model container [2020-11-29 22:40:37,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:37" (3/3) ... [2020-11-29 22:40:37,049 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-11-29 22:40:37,062 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:40:37,067 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:40:37,080 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:40:37,120 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:40:37,120 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:40:37,120 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:40:37,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:40:37,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:40:37,121 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:40:37,121 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:40:37,121 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:40:37,140 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 22:40:37,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:40:37,145 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:40:37,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:40:37,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:40:37,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:40:37,154 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-11-29 22:40:37,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 22:40:37,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066811760] [2020-11-29 22:40:37,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 22:40:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:40:37,291 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:40:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 22:40:37,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 22:40:37,360 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 22:40:37,360 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 22:40:37,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 22:40:37,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:40:37 BoogieIcfgContainer [2020-11-29 22:40:37,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:40:37,389 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:40:37,390 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:40:37,390 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:40:37,391 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:37" (3/4) ... [2020-11-29 22:40:37,394 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 22:40:37,395 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:40:37,399 INFO L168 Benchmark]: Toolchain (without parser) took 1249.81 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 48.8 MB in the beginning and 56.7 MB in the end (delta: -8.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:40:37,400 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:40:37,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.91 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 48.5 MB in the beginning and 82.9 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:40:37,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.66 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 81.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:40:37,404 INFO L168 Benchmark]: Boogie Preprocessor took 36.06 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 80.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:40:37,405 INFO L168 Benchmark]: RCFGBuilder took 515.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 69.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:40:37,406 INFO L168 Benchmark]: TraceAbstraction took 347.20 ms. Allocated memory is still 104.9 MB. Free memory was 69.3 MB in the beginning and 57.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:40:37,408 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 104.9 MB. Free memory was 57.2 MB in the beginning and 56.7 MB in the end (delta: 508.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:40:37,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 26.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 293.91 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 48.5 MB in the beginning and 82.9 MB in the end (delta: -34.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.66 ms. Allocated memory is still 104.9 MB. Free memory was 82.4 MB in the beginning and 81.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.06 ms. Allocated memory is still 104.9 MB. Free memory was 81.3 MB in the beginning and 80.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 515.88 ms. Allocated memory is still 104.9 MB. Free memory was 80.3 MB in the beginning and 69.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 347.20 ms. Allocated memory is still 104.9 MB. Free memory was 69.3 MB in the beginning and 57.2 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.79 ms. Allocated memory is still 104.9 MB. Free memory was 57.2 MB in the beginning and 56.7 MB in the end (delta: 508.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; [L23] COND FALSE !(x1 != x) [L13] COND TRUE !(cond) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Float_div.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 22:40:40,050 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 22:40:40,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 22:40:40,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 22:40:40,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 22:40:40,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 22:40:40,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 22:40:40,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 22:40:40,126 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 22:40:40,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 22:40:40,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 22:40:40,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 22:40:40,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 22:40:40,145 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 22:40:40,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 22:40:40,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 22:40:40,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 22:40:40,152 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 22:40:40,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 22:40:40,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 22:40:40,169 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 22:40:40,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 22:40:40,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 22:40:40,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 22:40:40,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 22:40:40,179 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 22:40:40,179 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 22:40:40,180 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 22:40:40,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 22:40:40,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 22:40:40,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 22:40:40,183 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 22:40:40,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 22:40:40,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 22:40:40,190 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 22:40:40,191 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 22:40:40,191 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 22:40:40,192 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 22:40:40,192 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 22:40:40,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 22:40:40,194 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 22:40:40,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 22:40:40,245 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 22:40:40,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 22:40:40,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 22:40:40,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 22:40:40,250 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 22:40:40,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 22:40:40,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 22:40:40,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 22:40:40,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 22:40:40,251 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 22:40:40,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 22:40:40,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 22:40:40,252 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 22:40:40,252 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 22:40:40,252 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 22:40:40,253 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 22:40:40,253 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 22:40:40,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 22:40:40,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 22:40:40,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 22:40:40,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 22:40:40,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 22:40:40,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 22:40:40,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 22:40:40,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 22:40:40,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 22:40:40,256 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_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aff65fabc2d382d12545e3467825c9efd3fdd157 [2020-11-29 22:40:40,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 22:40:40,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 22:40:40,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 22:40:40,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 22:40:40,667 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 22:40:40,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-11-29 22:40:40,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/8ff3a296d/af6288d643a44a4a926b4595bf62c8c3/FLAG7ad8da376 [2020-11-29 22:40:41,357 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 22:40:41,357 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2020-11-29 22:40:41,364 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/8ff3a296d/af6288d643a44a4a926b4595bf62c8c3/FLAG7ad8da376 [2020-11-29 22:40:41,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/data/8ff3a296d/af6288d643a44a4a926b4595bf62c8c3 [2020-11-29 22:40:41,736 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 22:40:41,739 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 22:40:41,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 22:40:41,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 22:40:41,756 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 22:40:41,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:41,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5da2ee26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41, skipping insertion in model container [2020-11-29 22:40:41,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:41,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 22:40:41,780 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 22:40:41,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:40:41,946 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 22:40:41,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 22:40:41,999 INFO L208 MainTranslator]: Completed translation [2020-11-29 22:40:42,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41 WrapperNode [2020-11-29 22:40:42,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 22:40:42,005 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 22:40:42,005 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 22:40:42,007 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 22:40:42,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 22:40:42,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 22:40:42,058 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 22:40:42,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 22:40:42,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... [2020-11-29 22:40:42,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 22:40:42,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 22:40:42,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 22:40:42,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 22:40:42,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:40:42,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 22:40:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 22:40:42,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 22:40:42,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 22:40:43,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 22:40:43,107 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 22:40:43,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:43 BoogieIcfgContainer [2020-11-29 22:40:43,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 22:40:43,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 22:40:43,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 22:40:43,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 22:40:43,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 10:40:41" (1/3) ... [2020-11-29 22:40:43,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c12c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:40:43, skipping insertion in model container [2020-11-29 22:40:43,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 10:40:41" (2/3) ... [2020-11-29 22:40:43,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c12c574 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 10:40:43, skipping insertion in model container [2020-11-29 22:40:43,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:43" (3/3) ... [2020-11-29 22:40:43,116 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i [2020-11-29 22:40:43,127 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 22:40:43,131 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 22:40:43,143 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 22:40:43,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 22:40:43,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 22:40:43,167 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 22:40:43,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 22:40:43,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 22:40:43,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 22:40:43,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 22:40:43,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 22:40:43,180 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 22:40:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 22:40:43,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:40:43,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:40:43,186 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:40:43,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:40:43,192 INFO L82 PathProgramCache]: Analyzing trace with hash 239624332, now seen corresponding path program 1 times [2020-11-29 22:40:43,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:40:43,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958504324] [2020-11-29 22:40:43,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:40:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:40:43,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 22:40:43,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:40:43,709 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 22:40:43,718 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 22:40:43,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:40:44,042 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 22:40:44,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958504324] [2020-11-29 22:40:44,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 22:40:44,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 22:40:44,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410843672] [2020-11-29 22:40:44,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 22:40:44,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:40:44,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 22:40:44,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 22:40:44,063 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 5 states. [2020-11-29 22:40:45,261 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:40:46,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:40:46,015 INFO L93 Difference]: Finished difference Result 26 states and 34 transitions. [2020-11-29 22:40:46,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 22:40:46,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-29 22:40:46,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:40:46,025 INFO L225 Difference]: With dead ends: 26 [2020-11-29 22:40:46,025 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 22:40:46,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-29 22:40:46,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 22:40:46,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 22:40:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 22:40:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 22:40:46,060 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2020-11-29 22:40:46,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:40:46,060 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 22:40:46,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 22:40:46,061 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 22:40:46,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 22:40:46,061 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:40:46,061 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:40:46,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 22:40:46,278 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:40:46,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:40:46,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1976138452, now seen corresponding path program 1 times [2020-11-29 22:40:46,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:40:46,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778775072] [2020-11-29 22:40:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:40:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 22:40:46,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 22:40:46,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:40:47,152 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 22:40:48,235 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:40:48,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 22:40:48,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:40:51,663 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-11-29 22:40:53,734 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2020-11-29 22:40:55,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-11-29 22:40:55,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778775072] [2020-11-29 22:40:55,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:40:55,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-11-29 22:40:55,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3882847] [2020-11-29 22:40:55,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 22:40:55,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:40:55,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 22:40:55,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=38, Unknown=1, NotChecked=12, Total=72 [2020-11-29 22:40:55,875 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 9 states. [2020-11-29 22:41:07,315 WARN L193 SmtUtils]: Spent 4.73 s on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2020-11-29 22:41:07,864 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 22:41:10,687 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 22:41:18,445 WARN L193 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:41:21,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:41:21,886 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-11-29 22:41:21,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 22:41:21,920 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 10 [2020-11-29 22:41:21,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:41:21,921 INFO L225 Difference]: With dead ends: 20 [2020-11-29 22:41:21,921 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 22:41:21,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=55, Invalid=104, Unknown=1, NotChecked=22, Total=182 [2020-11-29 22:41:21,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 22:41:21,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 22:41:21,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 22:41:21,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-11-29 22:41:21,928 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2020-11-29 22:41:21,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:41:21,929 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-11-29 22:41:21,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 22:41:21,929 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-11-29 22:41:21,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 22:41:21,930 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:41:21,930 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:41:22,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 22:41:22,150 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:41:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:41:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash 32921713, now seen corresponding path program 2 times [2020-11-29 22:41:22,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:41:22,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111873055] [2020-11-29 22:41:22,152 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:41:22,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 22:41:22,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:41:22,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 22:41:22,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:41:23,256 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 22:41:28,804 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:41:30,867 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~x1~0)) is different from true [2020-11-29 22:41:32,958 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)))) is different from true [2020-11-29 22:41:35,050 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2020-11-29 22:41:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2020-11-29 22:41:35,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:41:42,369 WARN L193 SmtUtils]: Spent 2.36 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 22:41:46,317 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 22:41:48,402 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 22:41:50,490 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 22:41:52,606 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 22:41:54,714 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 22:41:56,858 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2020-11-29 22:41:58,998 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2020-11-29 22:42:01,144 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2020-11-29 22:42:03,262 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2020-11-29 22:42:03,263 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2020-11-29 22:42:03,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111873055] [2020-11-29 22:42:03,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 22:42:03,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 17 [2020-11-29 22:42:03,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580872690] [2020-11-29 22:42:03,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 22:42:03,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:42:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 22:42:03,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=12, NotChecked=184, Total=306 [2020-11-29 22:42:03,267 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 18 states. [2020-11-29 22:42:06,437 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 22:42:08,578 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from false [2020-11-29 22:42:10,722 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0) .cse0))) (or (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)))))) is different from true [2020-11-29 22:42:12,873 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2020-11-29 22:42:14,952 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2020-11-29 22:42:55,992 WARN L193 SmtUtils]: Spent 21.01 s on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 22:42:59,220 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) (.cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~x1~0 .cse0) (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x1~0 .cse1) c_ULTIMATE.start_main_~x1~0))) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1) .cse1)) (or (fp.eq c_ULTIMATE.start_main_~x~0 .cse0) (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0))))) is different from true [2020-11-29 22:43:01,343 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.eq c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq c_ULTIMATE.start_main_~x1~0 c_ULTIMATE.start_main_~x~0))) (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0)) (= c_ULTIMATE.start_main_~x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 .cse0)))) is different from true [2020-11-29 22:43:04,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:43:04,602 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-11-29 22:43:04,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 22:43:04,605 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 13 [2020-11-29 22:43:04,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:43:04,605 INFO L225 Difference]: With dead ends: 21 [2020-11-29 22:43:04,605 INFO L226 Difference]: Without dead ends: 15 [2020-11-29 22:43:04,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 96.6s TimeCoverageRelationStatistics Valid=56, Invalid=87, Unknown=23, NotChecked=434, Total=600 [2020-11-29 22:43:04,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-29 22:43:04,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-29 22:43:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 22:43:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 22:43:04,610 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-11-29 22:43:04,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:43:04,610 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 22:43:04,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 22:43:04,610 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 22:43:04,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-29 22:43:04,611 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 22:43:04,611 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 22:43:04,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 22:43:04,812 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 22:43:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 22:43:04,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1673996692, now seen corresponding path program 3 times [2020-11-29 22:43:04,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 22:43:04,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529896508] [2020-11-29 22:43:04,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/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 22:43:05,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 22:43:05,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 22:43:05,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 22:43:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 22:43:07,912 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 22:43:19,599 WARN L193 SmtUtils]: Spent 8.10 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 22:43:21,664 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (= c_ULTIMATE.start_main_~x~0 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) c_ULTIMATE.start_main_~x~0)) is different from false [2020-11-29 22:43:22,711 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 22:43:32,587 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)))))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse2 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse3))) (and (fp.eq (fp.div roundNearestTiesToEven .cse2 .cse3) .cse2) (not (fp.eq .cse2 v_ULTIMATE.start_main_~x~0_18)) (fp.eq .cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2020-11-29 22:43:38,784 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)))))) is different from false [2020-11-29 22:43:40,836 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven v_ULTIMATE.start_main_~x~0_18 .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)))))) is different from true [2020-11-29 22:43:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 22:43:49,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 22:44:07,091 WARN L193 SmtUtils]: Spent 2.58 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 22:44:09,149 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from false [2020-11-29 22:44:11,215 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~x~0_20 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~x~0_20 .cse1))) (or (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_20) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))))) is different from true [2020-11-29 22:44:11,227 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 10 not checked. [2020-11-29 22:44:11,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529896508] [2020-11-29 22:44:11,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 22:44:11,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-11-29 22:44:11,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143219581] [2020-11-29 22:44:11,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 22:44:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 22:44:11,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 22:44:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=51, Unknown=10, NotChecked=68, Total=156 [2020-11-29 22:44:11,230 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 8 states. [2020-11-29 22:44:18,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 22:44:18,420 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 22:44:18,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 22:44:18,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-11-29 22:44:18,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 22:44:18,486 INFO L225 Difference]: With dead ends: 15 [2020-11-29 22:44:18,486 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 22:44:18,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 45.9s TimeCoverageRelationStatistics Valid=27, Invalid=51, Unknown=10, NotChecked=68, Total=156 [2020-11-29 22:44:18,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 22:44:18,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 22:44:18,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 22:44:18,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 22:44:18,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-29 22:44:18,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 22:44:18,488 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 22:44:18,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 22:44:18,488 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 22:44:18,488 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 22:44:18,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 22:44:18,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 22:44:28,840 WARN L193 SmtUtils]: Spent 10.06 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 22:44:28,844 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 22:44:28,845 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (exists ((v_ULTIMATE.start_main_~x~0_18 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div currentRoundingMode v_ULTIMATE.start_main_~x~0_18 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) (and (not (fp.eq .cse0 v_ULTIMATE.start_main_~x~0_18)) (= ULTIMATE.start_main_~x~0 .cse0)))) (= currentRoundingMode roundNearestTiesToEven) (= ULTIMATE.start_main_~x1~0 (fp.div currentRoundingMode ULTIMATE.start_main_~x~0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))))) [2020-11-29 22:44:28,845 INFO L274 CegarLoopResult]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2020-11-29 22:44:28,845 INFO L274 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-11-29 22:44:28,845 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-11-29 22:44:28,845 INFO L270 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-29 22:44:28,845 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 22:44:28,845 INFO L270 CegarLoopResult]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-29 22:44:28,846 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-29 22:44:28,854 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,855 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,857 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,857 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,860 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,860 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,861 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,862 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,863 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,864 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,865 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,866 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,866 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,867 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,867 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,868 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,868 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 10:44:28 BoogieIcfgContainer [2020-11-29 22:44:28,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 22:44:28,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 22:44:28,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 22:44:28,881 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 22:44:28,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 10:40:43" (3/4) ... [2020-11-29 22:44:28,889 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 22:44:28,897 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-29 22:44:28,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 22:44:28,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:44:28,898 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 22:44:28,923 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_18) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) [2020-11-29 22:44:28,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c9707cc-f949-4dc0-8c6e-a0004e88ac43/bin/uautomizer/witness.graphml [2020-11-29 22:44:28,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 22:44:28,935 INFO L168 Benchmark]: Toolchain (without parser) took 227196.18 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 40.1 MB in the beginning and 54.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 26.0 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,936 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 22:44:28,937 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.34 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 30.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 60.8 MB. Free memory was 30.2 MB in the beginning and 45.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,938 INFO L168 Benchmark]: Boogie Preprocessor took 49.48 ms. Allocated memory is still 60.8 MB. Free memory was 45.5 MB in the beginning and 44.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,938 INFO L168 Benchmark]: RCFGBuilder took 999.80 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 33.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,939 INFO L168 Benchmark]: TraceAbstraction took 225770.41 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 27.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,939 INFO L168 Benchmark]: Witness Printer took 53.15 ms. Allocated memory is still 73.4 MB. Free memory was 27.3 MB in the beginning and 54.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 22:44:28,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory was 43.3 MB in the beginning and 43.3 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 248.34 ms. Allocated memory is still 60.8 MB. Free memory was 40.0 MB in the beginning and 30.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.62 ms. Allocated memory is still 60.8 MB. Free memory was 30.2 MB in the beginning and 45.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.48 ms. Allocated memory is still 60.8 MB. Free memory was 45.5 MB in the beginning and 44.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 999.80 ms. Allocated memory is still 60.8 MB. Free memory was 44.2 MB in the beginning and 33.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 225770.41 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 27.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * Witness Printer took 53.15 ms. Allocated memory is still 73.4 MB. Free memory was 27.3 MB in the beginning and 54.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode - GenericResult: Unfinished Backtranslation unknown boogie variable currentRoundingMode * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2020-11-29 22:44:28,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,954 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,954 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,954 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2020-11-29 22:44:28,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,955 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,955 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,957 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,957 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,958 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0_18,QUANTIFIED] [2020-11-29 22:44:28,958 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0_18 : C_FLOAT :: !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0_18) && x == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0_18, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && x1 == ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) - InvariantResult [Line: 18]: Loop Invariant [2020-11-29 22:44:28,960 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode [2020-11-29 22:44:28,960 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2020-11-29 22:44:28,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable currentRoundingMode Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 215.5s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 96.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 20 SDslu, 59 SDs, 0 SdLazy, 58 SolverSat, 13 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 21.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 96 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 19 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 170.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 623 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 10.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 116.8s InterpolantComputationTime, 45 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 12 QuantifiedInterpolants, 14795 SizeOfPredicates, 19 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 31/78 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 correct! Received shutdown request...