./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg --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 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a ................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg --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 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:48:05,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:48:05,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:48:05,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:48:05,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:48:05,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:48:05,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:48:05,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:48:05,741 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:48:05,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:48:05,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:48:05,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:48:05,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:48:05,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:48:05,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:48:05,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:48:05,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:48:05,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:48:05,771 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:48:05,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:48:05,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:48:05,782 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:48:05,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:48:05,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:48:05,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:48:05,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:48:05,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:48:05,794 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:48:05,795 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:48:05,796 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:48:05,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:48:05,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:48:05,800 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:48:05,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:48:05,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:48:05,804 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:48:05,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:48:05,805 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:48:05,805 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:48:05,806 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:48:05,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:48:05,813 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:48:05,857 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:48:05,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:48:05,860 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:48:05,861 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:48:05,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:48:05,862 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:48:05,863 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:48:05,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:48:05,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:48:05,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:48:05,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:48:05,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:48:05,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:48:05,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:48:05,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:48:05,866 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:48:05,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:48:05,866 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:48:05,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:48:05,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:48:05,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:48:05,867 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:48:05,867 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:05,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:48:05,868 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:48:05,868 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:48:05,868 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:48:05,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:48:05,869 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:48:05,869 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:48:05,869 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:48:05,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:48:05,870 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_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-10-28 08:48:06,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:48:06,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:48:06,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:48:06,236 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:48:06,237 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:48:06,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:06,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/94fc53f26/f04dffcdba4947b7b7540cae010ed0a2/FLAGc3e14470b [2021-10-28 08:48:06,782 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:48:06,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:06,795 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/94fc53f26/f04dffcdba4947b7b7540cae010ed0a2/FLAGc3e14470b [2021-10-28 08:48:07,161 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/94fc53f26/f04dffcdba4947b7b7540cae010ed0a2 [2021-10-28 08:48:07,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:48:07,164 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:48:07,176 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:07,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:48:07,180 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:48:07,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1604b455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07, skipping insertion in model container [2021-10-28 08:48:07,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:48:07,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:07,403 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-28 08:48:07,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:07,417 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:48:07,433 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-28 08:48:07,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:07,444 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:48:07,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07 WrapperNode [2021-10-28 08:48:07,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:07,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:07,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:48:07,446 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:48:07,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:07,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:48:07,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:48:07,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:48:07,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:48:07,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:48:07,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:48:07,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:48:07,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (1/1) ... [2021-10-28 08:48:07,503 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:07,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:48:07,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:48:07,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:48:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:48:07,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:48:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:48:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:48:07,745 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:48:07,745 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 08:48:07,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:07 BoogieIcfgContainer [2021-10-28 08:48:07,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:48:07,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:48:07,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:48:07,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:48:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:48:07" (1/3) ... [2021-10-28 08:48:07,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ca3b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:07, skipping insertion in model container [2021-10-28 08:48:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:07" (2/3) ... [2021-10-28 08:48:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ca3b33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:07, skipping insertion in model container [2021-10-28 08:48:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:07" (3/3) ... [2021-10-28 08:48:07,755 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:07,761 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:48:07,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:48:07,803 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:48:07,809 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:48:07,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:48:07,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:07,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:48:07,825 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:07,826 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:48:07,826 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:07,832 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-28 08:48:07,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:48:07,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800035154] [2021-10-28 08:48:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:07,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:48:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:48:07,926 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:48:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:48:07,964 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:48:07,966 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:48:07,967 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:48:07,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:48:07,973 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-28 08:48:07,976 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:48:07,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:48:07 BoogieIcfgContainer [2021-10-28 08:48:07,995 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:48:07,996 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:48:07,996 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:48:07,996 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:48:07,997 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:07" (3/4) ... [2021-10-28 08:48:08,000 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:48:08,000 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:48:08,002 INFO L168 Benchmark]: Toolchain (without parser) took 836.40 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 43.2 MB in the beginning and 52.4 MB in the end (delta: -9.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:08,003 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:08,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.92 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 43.0 MB in the beginning and 77.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:08,004 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 75.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:08,005 INFO L168 Benchmark]: Boogie Preprocessor took 18.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 784.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:08,005 INFO L168 Benchmark]: RCFGBuilder took 253.40 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 66.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:08,006 INFO L168 Benchmark]: TraceAbstraction took 246.33 ms. Allocated memory is still 102.8 MB. Free memory was 65.3 MB in the beginning and 52.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:48:08,007 INFO L168 Benchmark]: Witness Printer took 3.95 ms. Allocated memory is still 102.8 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:48:08,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 81.8 MB. Free memory is still 59.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.92 ms. Allocated memory was 81.8 MB in the beginning and 102.8 MB in the end (delta: 21.0 MB). Free memory was 43.0 MB in the beginning and 77.2 MB in the end (delta: -34.2 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.49 ms. Allocated memory is still 102.8 MB. Free memory was 77.2 MB in the beginning and 75.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.85 ms. Allocated memory is still 102.8 MB. Free memory was 75.8 MB in the beginning and 75.0 MB in the end (delta: 784.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 253.40 ms. Allocated memory is still 102.8 MB. Free memory was 75.0 MB in the beginning and 66.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 246.33 ms. Allocated memory is still 102.8 MB. Free memory was 65.3 MB in the beginning and 52.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.95 ms. Allocated memory is still 102.8 MB. Free memory is still 52.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 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, 5 NumberOfCodeBlocks, 5 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 [2021-10-28 08:48:08,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:48:10,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:48:10,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:48:10,459 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:48:10,460 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:48:10,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:48:10,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:48:10,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:48:10,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:48:10,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:48:10,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:48:10,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:48:10,473 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:48:10,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:48:10,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:48:10,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:48:10,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:48:10,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:48:10,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:48:10,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:48:10,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:48:10,510 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:48:10,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:48:10,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:48:10,516 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:48:10,516 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:48:10,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:48:10,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:48:10,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:48:10,520 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:48:10,520 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:48:10,521 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:48:10,522 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:48:10,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:48:10,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:48:10,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:48:10,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:48:10,526 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:48:10,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:48:10,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:48:10,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:48:10,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:48:10,576 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:48:10,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:48:10,577 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:48:10,577 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:48:10,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:48:10,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:48:10,579 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:48:10,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:48:10,580 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:48:10,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:48:10,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:48:10,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:48:10,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:48:10,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:48:10,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:48:10,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:48:10,582 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:48:10,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:48:10,583 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:48:10,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:48:10,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:48:10,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:48:10,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:48:10,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:10,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:48:10,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:48:10,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:48:10,585 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:48:10,585 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:48:10,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:48:10,585 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:48:10,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:48:10,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:48:10,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:48:10,586 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_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dd2b259de573dae381590d9c9a53c821e05ecea3ef79b47acb4a28edd56bf9a [2021-10-28 08:48:10,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:48:11,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:48:11,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:48:11,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:48:11,020 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:48:11,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:11,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/a4dbf4cd5/5e017ef1bc264b719f018d73fa92de41/FLAG8fb6c9096 [2021-10-28 08:48:11,635 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:48:11,635 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:11,642 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/a4dbf4cd5/5e017ef1bc264b719f018d73fa92de41/FLAG8fb6c9096 [2021-10-28 08:48:12,003 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/data/a4dbf4cd5/5e017ef1bc264b719f018d73fa92de41 [2021-10-28 08:48:12,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:48:12,015 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:48:12,018 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:12,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:48:12,022 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:48:12,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233afd0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12, skipping insertion in model container [2021-10-28 08:48:12,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:48:12,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:48:12,181 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-28 08:48:12,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:12,199 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:48:12,212 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-28 08:48:12,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:48:12,228 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:48:12,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12 WrapperNode [2021-10-28 08:48:12,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:48:12,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:12,230 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:48:12,230 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:48:12,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,269 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:48:12,270 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:48:12,270 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:48:12,270 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:48:12,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:48:12,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:48:12,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:48:12,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:48:12,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (1/1) ... [2021-10-28 08:48:12,304 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:48:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:48:12,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:48:12,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:48:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:48:12,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:48:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:48:12,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:48:16,574 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:48:16,575 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 08:48:16,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:16 BoogieIcfgContainer [2021-10-28 08:48:16,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:48:16,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:48:16,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:48:16,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:48:16,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:48:12" (1/3) ... [2021-10-28 08:48:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec3290c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:16, skipping insertion in model container [2021-10-28 08:48:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:48:12" (2/3) ... [2021-10-28 08:48:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ec3290c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:48:16, skipping insertion in model container [2021-10-28 08:48:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:16" (3/3) ... [2021-10-28 08:48:16,585 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-28 08:48:16,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:48:16,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:48:16,636 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:48:16,643 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:48:16,643 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:48:16,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:16,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-28 08:48:16,661 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:16,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-28 08:48:16,662 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:16,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-28 08:48:16,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:16,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519299976] [2021-10-28 08:48:16,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:16,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:16,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:16,684 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:16,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:48:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:17,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 08:48:17,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:26,603 WARN L207 SmtUtils]: Spent 5.04 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 08:48:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:26,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:29,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:29,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:48:29,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519299976] [2021-10-28 08:48:29,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519299976] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:48:29,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:48:29,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 08:48:29,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894691227] [2021-10-28 08:48:29,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 08:48:29,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:48:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 08:48:29,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-10-28 08:48:29,049 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:32,116 WARN L860 $PredicateComparison]: unable to prove that (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0) (= ((_ to_fp 11 53) roundNearestTiesToEven 1.0) c_ULTIMATE.start_main_~main__x~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:48:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:48:36,686 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-10-28 08:48:36,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:48:36,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-28 08:48:36,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:48:36,695 INFO L225 Difference]: With dead ends: 16 [2021-10-28 08:48:36,695 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 08:48:36,697 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2021-10-28 08:48:36,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 08:48:36,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 08:48:36,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:36,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-28 08:48:36,768 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-28 08:48:36,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:48:36,769 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-28 08:48:36,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:48:36,769 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-28 08:48:36,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:48:36,770 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:48:36,770 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:48:36,800 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:48:36,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:48:36,985 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:48:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:48:36,986 INFO L85 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2021-10-28 08:48:36,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:48:36,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545270467] [2021-10-28 08:48:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:48:36,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:48:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:48:36,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:48:36,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:48:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:48:38,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 08:48:38,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:48:50,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:48:50,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:48:58,434 WARN L838 $PredicateComparison]: unable to prove that (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) is different from false [2021-10-28 08:49:05,851 WARN L838 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-28 08:49:08,099 WARN L860 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-28 08:49:08,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-10-28 08:49:08,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:49:08,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545270467] [2021-10-28 08:49:08,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545270467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:49:08,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:49:08,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-28 08:49:08,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123333943] [2021-10-28 08:49:08,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 08:49:08,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:49:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 08:49:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=20, Unknown=3, NotChecked=18, Total=56 [2021-10-28 08:49:08,104 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:49:10,385 WARN L860 $PredicateComparison]: unable to prove that (and (not (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:49:12,634 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)))) is different from false [2021-10-28 08:49:15,118 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0)))) is different from true [2021-10-28 08:49:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:49:22,977 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-10-28 08:49:22,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:49:22,978 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 08:49:22,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:49:22,979 INFO L225 Difference]: With dead ends: 12 [2021-10-28 08:49:22,979 INFO L226 Difference]: Without dead ends: 9 [2021-10-28 08:49:22,980 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=19, Invalid=21, Unknown=6, NotChecked=44, Total=90 [2021-10-28 08:49:22,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-28 08:49:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-28 08:49:22,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:49:22,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-28 08:49:22,983 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-10-28 08:49:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:49:22,984 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-28 08:49:22,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:49:22,985 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-28 08:49:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:49:22,985 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:49:22,986 INFO L513 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-28 08:49:23,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:49:23,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:49:23,193 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:49:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:49:23,193 INFO L85 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 2 times [2021-10-28 08:49:23,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:49:23,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [541920705] [2021-10-28 08:49:23,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 08:49:23,195 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:49:23,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:49:23,197 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:49:23,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:49:26,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 08:49:26,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:49:26,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-28 08:49:26,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:49:35,624 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:49:37,916 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~main__x1~0 (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:49:43,650 WARN L207 SmtUtils]: Spent 5.69 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:49:56,706 WARN L207 SmtUtils]: Spent 8.92 s on a formula simplification that was a NOOP. DAG size: 13 [2021-10-28 08:50:04,725 WARN L207 SmtUtils]: Spent 6.19 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:50:07,338 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x~0 .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~main__x~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 08:50:07,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 5 not checked. [2021-10-28 08:50:07,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:50:17,201 WARN L838 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from false [2021-10-28 08:50:19,325 WARN L860 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) is different from true [2021-10-28 08:50:29,140 WARN L207 SmtUtils]: Spent 5.05 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-28 08:50:31,390 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-10-28 08:50:33,641 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2021-10-28 08:50:39,276 WARN L207 SmtUtils]: Spent 5.63 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 08:50:44,637 WARN L207 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-28 08:50:47,022 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-28 08:50:49,394 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-28 08:50:55,580 WARN L207 SmtUtils]: Spent 6.18 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 08:51:01,475 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-28 08:51:04,015 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2021-10-28 08:51:06,567 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2021-10-28 08:51:06,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-28 08:51:06,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:51:06,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [541920705] [2021-10-28 08:51:06,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [541920705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-28 08:51:06,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 08:51:06,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-28 08:51:06,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33588479] [2021-10-28 08:51:06,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 08:51:06,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:51:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 08:51:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=30, Unknown=11, NotChecked=90, Total=156 [2021-10-28 08:51:06,581 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:51:09,181 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:51:11,657 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from false [2021-10-28 08:51:14,545 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)))) is different from true [2021-10-28 08:51:17,105 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0)) (let ((.cse1 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 08:51:19,317 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse0) c_ULTIMATE.start_main_~main__x1~0)) (fp.eq c_ULTIMATE.start_main_~main__x1~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-10-28 08:51:45,081 WARN L207 SmtUtils]: Spent 20.82 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-10-28 08:51:54,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:51:54,849 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-28 08:51:54,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 08:51:54,850 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 08:51:54,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:51:54,850 INFO L225 Difference]: With dead ends: 15 [2021-10-28 08:51:54,850 INFO L226 Difference]: Without dead ends: 11 [2021-10-28 08:51:54,852 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 82.8s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=20, NotChecked=250, Total=380 [2021-10-28 08:51:54,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-28 08:51:54,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-28 08:51:54,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:51:54,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-28 08:51:54,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8 [2021-10-28 08:51:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:51:54,858 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-28 08:51:54,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:51:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-28 08:51:54,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 08:51:54,860 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:51:54,860 INFO L513 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1] [2021-10-28 08:51:54,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:51:55,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:51:55,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:51:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:51:55,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1957592038, now seen corresponding path program 3 times [2021-10-28 08:51:55,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:51:55,086 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161489943] [2021-10-28 08:51:55,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:51:55,086 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:51:55,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:51:55,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:51:55,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 08:52:00,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:52:00,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:52:01,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:52:01,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:06,297 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_main_~main__x1~0 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0))))) is different from true [2021-10-28 08:52:11,432 WARN L207 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:52:20,125 WARN L207 SmtUtils]: Spent 7.42 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-28 08:52:25,846 WARN L207 SmtUtils]: Spent 5.68 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:52:29,846 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:52:36,139 WARN L207 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:52:40,910 WARN L860 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) c_ULTIMATE.start_main_~main__x1~0) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-28 08:52:47,807 WARN L207 SmtUtils]: Spent 6.86 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-28 08:52:49,954 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 08:52:49,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:52:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161489943] [2021-10-28 08:52:49,955 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-28 08:52:49,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [19921821] [2021-10-28 08:52:49,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:52:49,955 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-28 08:52:49,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/cvc4 [2021-10-28 08:52:49,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 08:52:49,958 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-28 08:52:49,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-28 08:52:58,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:52:58,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:52:58,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-28 08:52:58,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:52:58,604 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 08:52:58,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268425332] [2021-10-28 08:52:58,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 08:52:58,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:52:58,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:58,607 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 08:52:58,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 08:57:48,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-28 08:57:48,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 08:57:49,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-28 08:57:49,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:57:49,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-28 08:57:49,519 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:57:49,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-28 08:57:49,520 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-28 08:57:49,520 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-10-28 08:57:49,533 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:57:49,601 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-28 08:57:49,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-28 08:57:50,135 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2021-10-28 08:57:50,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2021-10-28 08:57:50,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d76c27aa-0b56-4ecb-8440-053caf8a98aa/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 08:57:50,199 INFO L731 BasicCegarLoop]: Path program histogram: [3, 1] [2021-10-28 08:57:50,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:57:50,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:57:50 BoogieIcfgContainer [2021-10-28 08:57:50,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:57:50,211 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:57:50,211 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:57:50,212 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:57:50,212 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:48:16" (3/4) ... [2021-10-28 08:57:50,216 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:57:50,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:57:50,217 INFO L168 Benchmark]: Toolchain (without parser) took 578202.01 ms. Allocated memory is still 77.6 MB. Free memory was 59.4 MB in the beginning and 35.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:50,218 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 57.7 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:57:50,218 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.14 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 49.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:50,219 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 77.6 MB. Free memory was 49.2 MB in the beginning and 60.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:50,220 INFO L168 Benchmark]: Boogie Preprocessor took 23.90 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 59.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:57:50,220 INFO L168 Benchmark]: RCFGBuilder took 4281.87 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 50.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:50,221 INFO L168 Benchmark]: TraceAbstraction took 573632.69 ms. Allocated memory is still 77.6 MB. Free memory was 49.6 MB in the beginning and 35.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:57:50,222 INFO L168 Benchmark]: Witness Printer took 4.83 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.3 MB in the end (delta: 448.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:57:50,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 77.6 MB. Free memory was 57.8 MB in the beginning and 57.7 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 211.14 ms. Allocated memory is still 77.6 MB. Free memory was 59.2 MB in the beginning and 49.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.87 ms. Allocated memory is still 77.6 MB. Free memory was 49.2 MB in the beginning and 60.8 MB in the end (delta: -11.6 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.90 ms. Allocated memory is still 77.6 MB. Free memory was 60.8 MB in the beginning and 59.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4281.87 ms. Allocated memory is still 77.6 MB. Free memory was 59.5 MB in the beginning and 50.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 573632.69 ms. Allocated memory is still 77.6 MB. Free memory was 49.6 MB in the beginning and 35.8 MB in the end (delta: 13.9 MB). Peak memory consumption was 17.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.83 ms. Allocated memory is still 77.6 MB. Free memory was 35.8 MB in the beginning and 35.3 MB in the end (delta: 448.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 27]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L1] int __return_main; [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 1.6; [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND TRUE main__x1 != main__x [L14] main__x = main__x1 [L15] main__x1 = main__x / 1.6 [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 [L25] COND TRUE __VERIFIER_assert__cond == 0 [L27] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 573.5s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 70.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 7 SDslu, 26 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 17.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 15 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 116.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=3, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 10.7s SatisfiabilityAnalysisTime, 190.7s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 367 SizeOfPredicates, 14 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/14 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...