./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 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3 --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 47ed977f76c934f7398d12ebfeb1101009979bf5 ........................................................................................................................................................................................................................................................ 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3 --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 47ed977f76c934f7398d12ebfeb1101009979bf5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:21:34,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:21:34,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:21:34,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:21:34,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:21:34,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:21:34,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:21:34,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:21:34,625 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:21:34,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:21:34,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:21:34,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:21:34,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:21:34,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:21:34,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:21:34,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:21:34,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:21:34,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:21:34,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:21:34,644 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:21:34,646 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:21:34,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:21:34,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:21:34,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:21:34,655 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:21:34,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:21:34,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:21:34,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:21:34,658 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:21:34,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:21:34,660 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:21:34,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:21:34,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:21:34,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:21:34,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:21:34,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:21:34,668 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:21:34,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:21:34,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:21:34,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:21:34,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:21:34,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:21:34,697 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:21:34,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:21:34,698 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:21:34,699 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:21:34,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:21:34,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:21:34,701 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:21:34,701 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:21:34,701 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:21:34,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:21:34,702 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:21:34,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:21:34,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:21:34,703 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:21:34,703 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:21:34,703 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:21:34,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:21:34,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:21:34,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:21:34,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:21:34,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:21:34,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:21:34,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:34,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:21:34,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:21:34,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:21:34,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:21:34,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:21:34,707 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:21:34,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:21:34,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:21:34,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:21:34,709 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2021-10-15 19:21:34,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:21:35,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:21:35,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:21:35,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:21:35,030 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:21:35,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:35,112 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/c80deecb1/f64945ca71454eb0b47124b7f9ee15f2/FLAG043d116e1 [2021-10-15 19:21:35,625 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:21:35,626 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:35,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/c80deecb1/f64945ca71454eb0b47124b7f9ee15f2/FLAG043d116e1 [2021-10-15 19:21:36,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/c80deecb1/f64945ca71454eb0b47124b7f9ee15f2 [2021-10-15 19:21:36,006 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:21:36,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:21:36,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:36,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:21:36,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:21:36,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2af847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36, skipping insertion in model container [2021-10-15 19:21:36,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:21:36,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:21:36,233 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-15 19:21:36,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:36,248 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:21:36,263 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-15 19:21:36,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:36,282 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:21:36,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36 WrapperNode [2021-10-15 19:21:36,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:36,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:36,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:21:36,286 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:21:36,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,307 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:36,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:21:36,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:21:36,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:21:36,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:21:36,352 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:21:36,352 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:21:36,353 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:21:36,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (1/1) ... [2021-10-15 19:21:36,366 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:36,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:36,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:21:36,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:21:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:21:36,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:21:36,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:21:36,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:21:36,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:21:36,714 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:21:36,727 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:36 BoogieIcfgContainer [2021-10-15 19:21:36,727 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:21:36,729 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:21:36,729 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:21:36,733 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:21:36,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:21:36" (1/3) ... [2021-10-15 19:21:36,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b09dfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:36, skipping insertion in model container [2021-10-15 19:21:36,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:36" (2/3) ... [2021-10-15 19:21:36,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b09dfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:36, skipping insertion in model container [2021-10-15 19:21:36,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:36" (3/3) ... [2021-10-15 19:21:36,737 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:36,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:21:36,749 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:21:36,813 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:21:36,824 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, mConcurrency=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 [2021-10-15 19:21:36,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:21:36,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 10 transitions, 20 flow [2021-10-15 19:21:36,859 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-10-15 19:21:36,859 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:36,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 10 events. 2/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:21:36,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 10 transitions, 20 flow [2021-10-15 19:21:36,867 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2021-10-15 19:21:36,872 INFO L129 PetriNetUnfolder]: 1/5 cut-off events. [2021-10-15 19:21:36,872 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:36,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:36,873 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 19:21:36,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:36,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:36,888 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-15 19:21:36,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:21:36,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451445866] [2021-10-15 19:21:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:36,902 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:21:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:37,005 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:21:37,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:21:37,052 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:21:37,053 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:21:37,055 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:21:37,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:21:37,062 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:21:37,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:21:37 BoogieIcfgContainer [2021-10-15 19:21:37,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:21:37,082 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:21:37,082 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:21:37,083 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:21:37,083 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:36" (3/4) ... [2021-10-15 19:21:37,086 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:21:37,087 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:21:37,089 INFO L168 Benchmark]: Toolchain (without parser) took 1080.17 ms. Allocated memory is still 98.6 MB. Free memory was 61.7 MB in the beginning and 48.5 MB in the end (delta: 13.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:37,089 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 98.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:37,090 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.70 ms. Allocated memory is still 98.6 MB. Free memory was 61.5 MB in the beginning and 74.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:37,091 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.10 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:37,092 INFO L168 Benchmark]: Boogie Preprocessor took 24.21 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 72.2 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:37,093 INFO L168 Benchmark]: RCFGBuilder took 375.65 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 63.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:37,093 INFO L168 Benchmark]: TraceAbstraction took 352.62 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 49.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:21:37,094 INFO L168 Benchmark]: Witness Printer took 4.40 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 48.5 MB in the end (delta: 321.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:21:37,099 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 98.6 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.70 ms. Allocated memory is still 98.6 MB. Free memory was 61.5 MB in the beginning and 74.6 MB in the end (delta: -13.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.10 ms. Allocated memory is still 98.6 MB. Free memory was 74.6 MB in the beginning and 73.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.21 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 72.2 MB in the end (delta: 990.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 375.65 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 63.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 352.62 ms. Allocated memory is still 98.6 MB. Free memory was 62.7 MB in the beginning and 49.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.40 ms. Allocated memory is still 98.6 MB. Free memory was 48.8 MB in the beginning and 48.5 MB in the end (delta: 321.3 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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. EmptinessCheckTime: 4.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 253.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 6.5ms SsaConstructionTime, 36.2ms SatisfiabilityAnalysisTime, 0.0ms 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 [2021-10-15 19:21:37,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:21:39,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:21:39,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:21:39,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:21:39,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:21:39,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:21:39,674 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:21:39,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:21:39,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:21:39,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:21:39,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:21:39,700 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:21:39,702 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:21:39,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:21:39,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:21:39,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:21:39,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:21:39,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:21:39,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:21:39,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:21:39,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:21:39,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:21:39,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:21:39,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:21:39,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:21:39,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:21:39,743 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:21:39,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:21:39,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:21:39,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:21:39,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:21:39,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:21:39,754 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:21:39,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:21:39,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:21:39,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:21:39,759 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:21:39,759 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:21:39,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:21:39,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:21:39,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:21:39,763 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:21:39,813 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:21:39,813 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:21:39,814 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:21:39,814 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:21:39,816 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:21:39,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:21:39,817 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:21:39,817 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:21:39,817 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:21:39,818 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:21:39,819 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:21:39,819 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:21:39,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:21:39,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:21:39,819 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:21:39,820 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:21:39,820 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:21:39,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:21:39,820 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:21:39,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:21:39,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:21:39,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:21:39,821 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:21:39,821 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:39,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:21:39,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:21:39,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:21:39,822 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:21:39,822 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:21:39,822 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:21:39,823 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:21:39,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:21:39,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:21:39,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:21:39,824 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 47ed977f76c934f7398d12ebfeb1101009979bf5 [2021-10-15 19:21:40,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:21:40,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:21:40,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:21:40,253 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:21:40,254 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:21:40,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:40,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/589645550/95899eae408b41a7b59aac3a8d881633/FLAG58327a7b4 [2021-10-15 19:21:40,849 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:21:40,850 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:40,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/589645550/95899eae408b41a7b59aac3a8d881633/FLAG58327a7b4 [2021-10-15 19:21:41,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/data/589645550/95899eae408b41a7b59aac3a8d881633 [2021-10-15 19:21:41,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:21:41,204 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:21:41,205 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:41,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:21:41,210 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:21:41,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a854aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41, skipping insertion in model container [2021-10-15 19:21:41,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:21:41,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:21:41,399 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-15 19:21:41,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:41,427 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:21:41,454 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_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/sv-benchmarks/c/floats-esbmc-regression/Double_div_bad.i.p+cfa-reducer.c[674,687] [2021-10-15 19:21:41,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:21:41,476 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:21:41,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41 WrapperNode [2021-10-15 19:21:41,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:21:41,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:41,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:21:41,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:21:41,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:21:41,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:21:41,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:21:41,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:21:41,580 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:21:41,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:21:41,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:21:41,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:21:41,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (1/1) ... [2021-10-15 19:21:41,623 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:21:41,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:21:41,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:21:41,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:21:41,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:21:41,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:21:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:21:41,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:21:46,225 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:21:46,226 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-15 19:21:46,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:46 BoogieIcfgContainer [2021-10-15 19:21:46,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:21:46,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:21:46,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:21:46,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:21:46,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:21:41" (1/3) ... [2021-10-15 19:21:46,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:46, skipping insertion in model container [2021-10-15 19:21:46,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:21:41" (2/3) ... [2021-10-15 19:21:46,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5474dc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:21:46, skipping insertion in model container [2021-10-15 19:21:46,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:46" (3/3) ... [2021-10-15 19:21:46,238 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div_bad.i.p+cfa-reducer.c [2021-10-15 19:21:46,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:21:46,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:21:46,289 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:21:46,297 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, mConcurrency=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 [2021-10-15 19:21:46,297 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:21:46,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 10 transitions, 20 flow [2021-10-15 19:21:46,327 INFO L129 PetriNetUnfolder]: 2/10 cut-off events. [2021-10-15 19:21:46,327 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:46,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11 conditions, 10 events. 2/10 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-10-15 19:21:46,329 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 10 transitions, 20 flow [2021-10-15 19:21:46,334 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 6 places, 6 transitions, 12 flow [2021-10-15 19:21:46,336 INFO L129 PetriNetUnfolder]: 1/5 cut-off events. [2021-10-15 19:21:46,336 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:21:46,337 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:21:46,337 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2021-10-15 19:21:46,338 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:21:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:21:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2021-10-15 19:21:46,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:21:46,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612974023] [2021-10-15 19:21:46,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:21:46,359 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:21:46,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:21:46,364 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:21:46,366 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:21:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:21:47,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:21:47,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:21:57,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:21:57,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:22:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:22:00,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:22:00,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612974023] [2021-10-15 19:22:00,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612974023] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:22:00,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:22:00,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-15 19:22:00,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854031185] [2021-10-15 19:22:00,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:22:00,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:22:00,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:22:00,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=11, Unknown=1, NotChecked=0, Total=20 [2021-10-15 19:22:00,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 10 [2021-10-15 19:22:00,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 6 places, 6 transitions, 12 flow. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-10-15 19:22:00,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:22:00,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 10 [2021-10-15 19:22:00,705 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:22:10,009 INFO L129 PetriNetUnfolder]: 1/8 cut-off events. [2021-10-15 19:22:10,009 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:22:10,010 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16 conditions, 8 events. 1/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 0/7 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 19:22:10,011 INFO L132 encePairwiseOnDemand]: 6/10 looper letters, 2 selfloop transitions, 4 changer transitions 0/8 dead transitions. [2021-10-15 19:22:10,012 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 8 transitions, 28 flow [2021-10-15 19:22:10,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:22:10,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:22:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 33 transitions. [2021-10-15 19:22:10,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.66 [2021-10-15 19:22:10,028 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 33 transitions. [2021-10-15 19:22:10,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 33 transitions. [2021-10-15 19:22:10,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:22:10,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 33 transitions. [2021-10-15 19:22:10,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2021-10-15 19:22:10,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2021-10-15 19:22:10,037 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 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) [2021-10-15 19:22:10,039 INFO L186 Difference]: Start difference. First operand has 6 places, 6 transitions, 12 flow. Second operand 5 states and 33 transitions. [2021-10-15 19:22:10,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 8 transitions, 28 flow [2021-10-15 19:22:10,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 10 places, 8 transitions, 28 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:22:10,044 INFO L242 Difference]: Finished difference. Result has 12 places, 8 transitions, 34 flow [2021-10-15 19:22:10,046 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=10, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=6, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=34, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2021-10-15 19:22:10,047 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 6 predicate places. [2021-10-15 19:22:10,047 INFO L470 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 34 flow [2021-10-15 19:22:10,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-10-15 19:22:10,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:22:10,048 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-15 19:22:10,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:22:10,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:22:10,259 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:22:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:22:10,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1805796550, now seen corresponding path program 1 times [2021-10-15 19:22:10,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:22:10,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346067086] [2021-10-15 19:22:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:22:10,261 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:22:10,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:22:10,262 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:22:10,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:22:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:22:12,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-15 19:22:12,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:22:23,164 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:22:34,673 WARN L207 SmtUtils]: Spent 7.81 s on a formula simplification that was a NOOP. DAG size: 12 [2021-10-15 19:22:41,446 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 8.0 5.0)))) (and (= (fp.div roundNearestTiesToEven c_ULTIMATE.start_main_~main__x~0 .cse0) c_ULTIMATE.start_main_~main__x1~0) (= c_ULTIMATE.start_main_~main__x~0 (fp.div roundNearestTiesToEven (fp.div roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0) .cse0) .cse0)))) is different from true [2021-10-15 19:22:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 2 not checked. [2021-10-15 19:22:41,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:22:48,090 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 [2021-10-15 19:22:50,255 WARN L860 $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 true [2021-10-15 19:22:57,220 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 c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-15 19:22:59,531 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 c_ULTIMATE.start_main_~main__x1~0 .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-15 19:23:06,869 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2021-10-15 19:23:09,311 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2021-10-15 19:23:09,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-10-15 19:23:09,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:23:09,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346067086] [2021-10-15 19:23:09,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346067086] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:23:09,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:23:09,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-15 19:23:09,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121228775] [2021-10-15 19:23:09,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:23:09,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:23:09,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:23:09,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=19, Unknown=8, NotChecked=44, Total=90 [2021-10-15 19:23:09,317 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 10 [2021-10-15 19:23:09,317 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 12 places, 8 transitions, 34 flow. Second operand has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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) [2021-10-15 19:23:09,317 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:23:09,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 10 [2021-10-15 19:23:09,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:23:11,811 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 (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:23:14,273 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (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 [2021-10-15 19:23:16,565 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 8.0 5.0)))) (and (not (let ((.cse0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~main__x1~0 .cse1))) (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 [2021-10-15 19:23:18,732 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)) (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))) is different from true [2021-10-15 19:23:28,867 WARN L207 SmtUtils]: Spent 10.08 s on a formula simplification. DAG size of input: 15 DAG size of output: 13 [2021-10-15 19:23:41,805 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 19:23:41,806 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:23:41,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 9 events. 1/9 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 1 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 10. Up to 5 conditions per place. [2021-10-15 19:23:41,807 INFO L132 encePairwiseOnDemand]: 6/10 looper letters, 2 selfloop transitions, 5 changer transitions 0/9 dead transitions. [2021-10-15 19:23:41,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 9 transitions, 52 flow [2021-10-15 19:23:41,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:23:41,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:23:41,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 38 transitions. [2021-10-15 19:23:41,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2021-10-15 19:23:41,971 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 38 transitions. [2021-10-15 19:23:41,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 38 transitions. [2021-10-15 19:23:41,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:23:41,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 38 transitions. [2021-10-15 19:23:41,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-10-15 19:23:41,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-10-15 19:23:41,974 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 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) [2021-10-15 19:23:41,974 INFO L186 Difference]: Start difference. First operand has 12 places, 8 transitions, 34 flow. Second operand 6 states and 38 transitions. [2021-10-15 19:23:41,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 9 transitions, 52 flow [2021-10-15 19:23:41,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 9 transitions, 47 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-15 19:23:41,978 INFO L242 Difference]: Finished difference. Result has 17 places, 9 transitions, 49 flow [2021-10-15 19:23:41,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=10, PETRI_DIFFERENCE_MINUEND_FLOW=29, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=9} [2021-10-15 19:23:41,979 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 11 predicate places. [2021-10-15 19:23:41,979 INFO L470 AbstractCegarLoop]: Abstraction has has 17 places, 9 transitions, 49 flow [2021-10-15 19:23:41,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.0) internal successors, (60), 10 states have internal predecessors, (60), 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) [2021-10-15 19:23:41,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:23:41,980 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1] [2021-10-15 19:23:42,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:23:42,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:23:42,181 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:23:42,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:23:42,181 INFO L82 PathProgramCache]: Analyzing trace with hash 145055718, now seen corresponding path program 2 times [2021-10-15 19:23:42,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:23:42,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914638516] [2021-10-15 19:23:42,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-15 19:23:42,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:23:42,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:23:42,184 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:23:42,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:23:45,812 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-15 19:23:45,812 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:23:45,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-15 19:23:45,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:23:57,025 WARN L207 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:23:59,935 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 [2021-10-15 19:24:05,870 WARN L207 SmtUtils]: Spent 5.90 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:24:09,612 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 [2021-10-15 19:24:18,593 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:24:20,759 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 [2021-10-15 19:24:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-15 19:24:20,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:24:30,636 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 [2021-10-15 19:24:32,778 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 [2021-10-15 19:24:42,965 WARN L207 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 8 [2021-10-15 19:24:45,302 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 [2021-10-15 19:24:47,598 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 [2021-10-15 19:24:53,563 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-15 19:24:59,210 WARN L207 SmtUtils]: Spent 5.65 s on a formula simplification that was a NOOP. DAG size: 9 [2021-10-15 19:25:01,660 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 [2021-10-15 19:25:04,093 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 [2021-10-15 19:25:10,639 WARN L207 SmtUtils]: Spent 6.54 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-15 19:25:16,866 WARN L207 SmtUtils]: Spent 6.23 s on a formula simplification that was a NOOP. DAG size: 11 [2021-10-15 19:25:19,470 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 [2021-10-15 19:25:22,076 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 [2021-10-15 19:25:22,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-10-15 19:25:22,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:25:22,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914638516] [2021-10-15 19:25:22,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914638516] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-15 19:25:22,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-15 19:25:22,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2021-10-15 19:25:22,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795585337] [2021-10-15 19:25:22,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-15 19:25:22,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:25:22,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-15 19:25:22,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=23, Unknown=11, NotChecked=98, Total=156 [2021-10-15 19:25:22,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 10 [2021-10-15 19:25:22,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 9 transitions, 49 flow. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2021-10-15 19:25:22,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:25:22,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 10 [2021-10-15 19:25:22,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:25:24,795 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 [2021-10-15 19:25:27,494 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 [2021-10-15 19:25:29,948 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 [2021-10-15 19:25:32,646 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 [2021-10-15 19:25:34,809 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 [2021-10-15 19:26:03,652 WARN L207 SmtUtils]: Spent 23.94 s on a formula simplification. DAG size of input: 22 DAG size of output: 16 [2021-10-15 19:26:14,003 INFO L129 PetriNetUnfolder]: 1/12 cut-off events. [2021-10-15 19:26:14,003 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-15 19:26:14,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 12 events. 1/12 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 3 event pairs, 0 based on Foata normal form. 2/14 useless extension candidates. Maximal degree in co-relation 25. Up to 7 conditions per place. [2021-10-15 19:26:14,004 INFO L132 encePairwiseOnDemand]: 5/10 looper letters, 3 selfloop transitions, 7 changer transitions 1/12 dead transitions. [2021-10-15 19:26:14,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 12 transitions, 91 flow [2021-10-15 19:26:14,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:26:14,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:26:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 43 transitions. [2021-10-15 19:26:14,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43 [2021-10-15 19:26:14,015 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 43 transitions. [2021-10-15 19:26:14,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 43 transitions. [2021-10-15 19:26:14,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:26:14,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 43 transitions. [2021-10-15 19:26:14,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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) [2021-10-15 19:26:14,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 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) [2021-10-15 19:26:14,018 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 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) [2021-10-15 19:26:14,019 INFO L186 Difference]: Start difference. First operand has 17 places, 9 transitions, 49 flow. Second operand 10 states and 43 transitions. [2021-10-15 19:26:14,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 12 transitions, 91 flow [2021-10-15 19:26:14,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 12 transitions, 79 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-10-15 19:26:14,022 INFO L242 Difference]: Finished difference. Result has 25 places, 11 transitions, 75 flow [2021-10-15 19:26:14,022 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=10, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=11} [2021-10-15 19:26:14,022 INFO L334 CegarLoopForPetriNet]: 6 programPoint places, 19 predicate places. [2021-10-15 19:26:14,023 INFO L470 AbstractCegarLoop]: Abstraction has has 25 places, 11 transitions, 75 flow [2021-10-15 19:26:14,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 13 states have internal predecessors, (53), 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) [2021-10-15 19:26:14,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:26:14,024 INFO L254 CegarLoopForPetriNet]: trace histogram [5, 1, 1, 1, 1, 1] [2021-10-15 19:26:14,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:26:14,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:26:14,231 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:26:14,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:26:14,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1957592038, now seen corresponding path program 3 times [2021-10-15 19:26:14,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:26:14,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [78154822] [2021-10-15 19:26:14,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:26:14,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:26:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:26:14,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:26:14,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:26:21,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-15 19:26:21,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:26:21,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:26:21,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:26:33,263 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:26:36,536 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 [2021-10-15 19:26:42,608 WARN L207 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:26:47,068 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 [2021-10-15 19:26:53,992 WARN L207 SmtUtils]: Spent 6.86 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:26:56,781 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 [2021-10-15 19:27:04,564 WARN L207 SmtUtils]: Spent 7.73 s on a formula simplification that was a NOOP. DAG size: 3 [2021-10-15 19:27:08,008 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 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-10-15 19:27:13,665 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-15 19:27:13,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:27:13,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [78154822] [2021-10-15 19:27:13,667 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/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") [2021-10-15 19:27:13,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1116671173] [2021-10-15 19:27:13,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:27:13,668 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-15 19:27:13,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/cvc4 [2021-10-15 19:27:13,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-15 19:27:13,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-15 19:27:13,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-10-15 19:27:24,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-15 19:27:24,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:27:24,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-15 19:27:24,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:27:24,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-15 19:27:24,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96008199] [2021-10-15 19:27:24,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-15 19:27:24,931 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:27:24,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:27:24,932 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:27:24,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-15 19:33:36,378 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-15 19:33:36,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-15 19:33:37,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-15 19:33:37,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:33:37,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-15 19:33:37,242 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:33:37,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-15 19:33:37,242 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-15 19:33:37,242 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-15 19:33:37,249 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:33:37,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:33:37,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2021-10-15 19:33:37,858 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forcibly destroying the process [2021-10-15 19:33:37,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 137 [2021-10-15 19:33:37,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9a815ae4-cc68-4847-9891-a2bcb2fb9e00/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:33:37,934 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:33:37,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:33:37 BoogieIcfgContainer [2021-10-15 19:33:37,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:33:37,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:33:37,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:33:37,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:33:37,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:21:46" (3/4) ... [2021-10-15 19:33:37,960 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:33:37,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:33:37,968 INFO L168 Benchmark]: Toolchain (without parser) took 716756.62 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 45.3 MB in the beginning and 53.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:37,969 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:37,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.05 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 35.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:37,972 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.15 ms. Allocated memory is still 65.0 MB. Free memory was 35.0 MB in the beginning and 47.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:37,972 INFO L168 Benchmark]: Boogie Preprocessor took 40.12 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 46.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:37,973 INFO L168 Benchmark]: RCFGBuilder took 4616.72 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 37.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:33:37,977 INFO L168 Benchmark]: TraceAbstraction took 711722.55 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 54.1 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:37,981 INFO L168 Benchmark]: Witness Printer took 6.59 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 53.5 MB in the end (delta: 595.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:33:37,987 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 65.0 MB. Free memory is still 46.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 272.05 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 35.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.15 ms. Allocated memory is still 65.0 MB. Free memory was 35.0 MB in the beginning and 47.8 MB in the end (delta: -12.8 MB). Peak memory consumption was 3.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.12 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 46.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4616.72 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 37.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 711722.55 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 36.9 MB in the beginning and 54.1 MB in the end (delta: -17.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.59 ms. Allocated memory is still 79.7 MB. Free memory was 54.1 MB in the beginning and 53.5 MB in the end (delta: 595.5 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms 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. EmptinessCheckTime: 2.2ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 711647.8ms, OverallIterations: 4, TraceHistogramMax: 5, EmptinessCheckTime: 0.0ms, AutomataDifference: 93957.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 36.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6 SDtfs, 8 SDslu, 5 SDs, 0 SdLazy, 22 SolverSat, 6 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 23564.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 18 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 138977.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=3, InterpolantAutomatonStates: 21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.3ms SsaConstructionTime, 7025.0ms SatisfiabilityAnalysisTime, 166095.3ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 420 SizeOfPredicates, 15 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/18 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...