./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_double.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_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/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_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/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_97347e64-fdfb-42b9-822c-01bfbcaceecd/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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 ............................................................................................................................................................................................................................................. 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/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_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_double.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/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_97347e64-fdfb-42b9-822c-01bfbcaceecd/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 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 ........................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:41:01,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:41:01,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:41:01,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:41:01,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:41:01,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:41:01,558 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:41:01,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:41:01,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:41:01,564 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:41:01,566 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:41:01,567 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:41:01,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:41:01,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:41:01,571 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:41:01,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:41:01,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:41:01,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:41:01,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:41:01,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:41:01,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:41:01,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:41:01,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:41:01,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:41:01,604 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:41:01,610 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:41:01,610 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:41:01,612 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:41:01,613 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:41:01,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:41:01,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:41:01,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:41:01,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:41:01,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:41:01,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:41:01,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:41:01,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:41:01,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:41:01,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:41:01,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:41:01,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:41:01,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:41:01,679 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:41:01,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:41:01,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:41:01,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:41:01,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:41:01,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:41:01,683 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:41:01,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:41:01,684 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:41:01,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:41:01,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:41:01,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:41:01,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:41:01,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:41:01,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:41:01,687 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:41:01,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:41:01,687 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:41:01,688 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:41:01,688 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:41:01,688 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:41:01,688 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:41:01,689 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:41:01,689 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:41:01,689 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:41:01,689 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:41:01,690 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:41:01,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:41:01,690 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:41:01,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:41:01,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:41:01,693 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:41:01,693 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-10-15 19:41:02,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:41:02,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:41:02,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:41:02,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:41:02,068 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:41:02,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/float_double.c [2021-10-15 19:41:02,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/249df3d92/1e6cd29d77114952a8991725ef2953e2/FLAG949e41ea8 [2021-10-15 19:41:02,628 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:41:02,631 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c [2021-10-15 19:41:02,648 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/249df3d92/1e6cd29d77114952a8991725ef2953e2/FLAG949e41ea8 [2021-10-15 19:41:03,006 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/249df3d92/1e6cd29d77114952a8991725ef2953e2 [2021-10-15 19:41:03,009 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:41:03,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:41:03,019 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:41:03,020 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:41:03,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:41:03,024 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baeb6a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03, skipping insertion in model container [2021-10-15 19:41:03,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:41:03,054 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:41:03,238 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-15 19:41:03,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:41:03,256 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:41:03,268 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-15 19:41:03,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:41:03,284 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:41:03,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03 WrapperNode [2021-10-15 19:41:03,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:41:03,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:41:03,286 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:41:03,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:41:03,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,304 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,324 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:41:03,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:41:03,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:41:03,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:41:03,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:41:03,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:41:03,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:41:03,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:41:03,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (1/1) ... [2021-10-15 19:41:03,360 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:41:03,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:41:03,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:41:03,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:41:03,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:41:03,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:41:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:41:03,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:41:03,628 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:41:03,629 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:41:03,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:03 BoogieIcfgContainer [2021-10-15 19:41:03,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:41:03,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:41:03,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:41:03,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:41:03,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:41:03" (1/3) ... [2021-10-15 19:41:03,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eff7793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:41:03, skipping insertion in model container [2021-10-15 19:41:03,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:03" (2/3) ... [2021-10-15 19:41:03,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eff7793 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:41:03, skipping insertion in model container [2021-10-15 19:41:03,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:03" (3/3) ... [2021-10-15 19:41:03,641 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-10-15 19:41:03,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:41:03,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:41:03,706 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:41:03,714 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 19:41:03,715 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:41:03,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:41:03,746 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 19:41:03,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:41:03,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 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 19:41:03,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:41:03,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:41:03,755 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:41:03,755 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:41:03,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:41:03,757 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:41:03,757 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:41:03,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:41:03,764 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 19:41:03,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:41:03,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424358256] [2021-10-15 19:41:03,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:41:03,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:41:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:41:03,896 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:41:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:41:03,942 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:41:03,945 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:41:03,946 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:41:03,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:41:03,957 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:41:03,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:41:03 BoogieIcfgContainer [2021-10-15 19:41:03,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:41:03,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:41:03,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:41:03,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:41:03,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:03" (3/4) ... [2021-10-15 19:41:03,980 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:41:03,981 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:41:03,983 INFO L168 Benchmark]: Toolchain (without parser) took 971.20 ms. Allocated memory is still 107.0 MB. Free memory was 67.8 MB in the beginning and 57.2 MB in the end (delta: 10.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:03,984 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 107.0 MB. Free memory is still 84.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:03,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.28 ms. Allocated memory is still 107.0 MB. Free memory was 67.6 MB in the beginning and 82.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:03,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:03,987 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:03,988 INFO L168 Benchmark]: RCFGBuilder took 282.17 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 71.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:03,989 INFO L168 Benchmark]: TraceAbstraction took 341.37 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 57.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:03,990 INFO L168 Benchmark]: Witness Printer took 5.57 ms. Allocated memory is still 107.0 MB. Free memory was 57.6 MB in the beginning and 57.2 MB in the end (delta: 387.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:03,995 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 107.0 MB. Free memory is still 84.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.28 ms. Allocated memory is still 107.0 MB. Free memory was 67.6 MB in the beginning and 82.7 MB in the end (delta: -15.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.50 ms. Allocated memory is still 107.0 MB. Free memory was 82.7 MB in the beginning and 81.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 107.0 MB. Free memory was 81.4 MB in the beginning and 80.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 282.17 ms. Allocated memory is still 107.0 MB. Free memory was 80.3 MB in the beginning and 71.9 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 341.37 ms. Allocated memory is still 107.0 MB. Free memory was 71.3 MB in the beginning and 57.6 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.57 ms. Allocated memory is still 107.0 MB. Free memory was 57.6 MB in the beginning and 57.2 MB in the end (delta: 387.5 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: 6]: 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: [L10] double x = 1e20 + 1.; [L11] float y = x; [L6] COND TRUE !(cond) [L6] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 2.1ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 254.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 38.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred 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: 6.7ms SsaConstructionTime, 45.8ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 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 19:41:04,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:41:06,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:41:06,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:41:07,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:41:07,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:41:07,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:41:07,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:41:07,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:41:07,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:41:07,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:41:07,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:41:07,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:41:07,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:41:07,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:41:07,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:41:07,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:41:07,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:41:07,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:41:07,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:41:07,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:41:07,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:41:07,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:41:07,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:41:07,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:41:07,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:41:07,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:41:07,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:41:07,088 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:41:07,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:41:07,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:41:07,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:41:07,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:41:07,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:41:07,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:41:07,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:41:07,100 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:41:07,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:41:07,103 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:41:07,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:41:07,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:41:07,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:41:07,113 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:41:07,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:41:07,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:41:07,164 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:41:07,164 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:41:07,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:41:07,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:41:07,166 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:41:07,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:41:07,167 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:41:07,167 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:41:07,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:41:07,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:41:07,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:41:07,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:41:07,168 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:41:07,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:41:07,169 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:41:07,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:41:07,169 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:41:07,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:41:07,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:41:07,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:41:07,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:41:07,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:41:07,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:41:07,171 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:41:07,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:41:07,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:41:07,176 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:41:07,177 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3cc8be4574ed58f48fa7ae6ba17a4162234910 [2021-10-15 19:41:07,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:41:07,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:41:07,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:41:07,661 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:41:07,662 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:41:07,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-benchs/float_double.c [2021-10-15 19:41:07,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/c2e57bbeb/140f3dd78a5c44fcb1177b8f52b65a67/FLAGc865a3586 [2021-10-15 19:41:08,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:41:08,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c [2021-10-15 19:41:08,315 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/c2e57bbeb/140f3dd78a5c44fcb1177b8f52b65a67/FLAGc865a3586 [2021-10-15 19:41:08,643 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/data/c2e57bbeb/140f3dd78a5c44fcb1177b8f52b65a67 [2021-10-15 19:41:08,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:41:08,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:41:08,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:41:08,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:41:08,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:41:08,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:41:08" (1/1) ... [2021-10-15 19:41:08,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d204aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:08, skipping insertion in model container [2021-10-15 19:41:08,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:41:08" (1/1) ... [2021-10-15 19:41:08,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:41:08,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:41:08,905 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-15 19:41:08,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:41:08,954 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:41:08,973 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_97347e64-fdfb-42b9-822c-01bfbcaceecd/sv-benchmarks/c/float-benchs/float_double.c[357,370] [2021-10-15 19:41:08,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:41:09,000 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:41:09,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09 WrapperNode [2021-10-15 19:41:09,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:41:09,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:41:09,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:41:09,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:41:09,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:41:09,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:41:09,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:41:09,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:41:09,070 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,093 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,104 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,119 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:41:09,121 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:41:09,122 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:41:09,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:41:09,125 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (1/1) ... [2021-10-15 19:41:09,138 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:41:09,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:41:09,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:41:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:41:09,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:41:09,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:41:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:41:09,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:41:09,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:41:09,726 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-10-15 19:41:09,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:09 BoogieIcfgContainer [2021-10-15 19:41:09,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:41:09,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:41:09,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:41:09,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:41:09,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:41:08" (1/3) ... [2021-10-15 19:41:09,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:41:09, skipping insertion in model container [2021-10-15 19:41:09,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:41:09" (2/3) ... [2021-10-15 19:41:09,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6627775 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:41:09, skipping insertion in model container [2021-10-15 19:41:09,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:09" (3/3) ... [2021-10-15 19:41:09,739 INFO L111 eAbstractionObserver]: Analyzing ICFG float_double.c [2021-10-15 19:41:09,746 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:41:09,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:41:09,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:41:09,812 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 19:41:09,813 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:41:09,823 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:41:09,844 INFO L129 PetriNetUnfolder]: 1/9 cut-off events. [2021-10-15 19:41:09,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:41:09,847 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10 conditions, 9 events. 1/9 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 19:41:09,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 9 places, 9 transitions, 18 flow [2021-10-15 19:41:09,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 5 places, 4 transitions, 8 flow [2021-10-15 19:41:09,854 INFO L129 PetriNetUnfolder]: 0/3 cut-off events. [2021-10-15 19:41:09,854 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:41:09,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:41:09,856 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2021-10-15 19:41:09,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:41:09,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:41:09,878 INFO L82 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2021-10-15 19:41:09,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:41:09,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789084323] [2021-10-15 19:41:09,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:41:09,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:41:09,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:41:09,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:41:09,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:41:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:41:10,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-15 19:41:10,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:41:10,378 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 19:41:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:41:10,445 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 19:41:10,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:41:10,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789084323] [2021-10-15 19:41:10,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789084323] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:41:10,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:41:10,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-15 19:41:10,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288030514] [2021-10-15 19:41:10,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:41:10,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:41:10,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:41:10,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:41:10,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 9 [2021-10-15 19:41:10,485 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 5 places, 4 transitions, 8 flow. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:41:10,485 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:41:10,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 9 [2021-10-15 19:41:10,487 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:41:10,495 INFO L129 PetriNetUnfolder]: 0/2 cut-off events. [2021-10-15 19:41:10,495 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:41:10,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5 conditions, 2 events. 0/2 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/3 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2021-10-15 19:41:10,497 INFO L132 encePairwiseOnDemand]: 7/9 looper letters, 0 selfloop transitions, 0 changer transitions 2/2 dead transitions. [2021-10-15 19:41:10,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 5 places, 2 transitions, 6 flow [2021-10-15 19:41:10,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:41:10,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:41:10,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 17 transitions. [2021-10-15 19:41:10,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2021-10-15 19:41:10,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 17 transitions. [2021-10-15 19:41:10,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 17 transitions. [2021-10-15 19:41:10,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:41:10,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 17 transitions. [2021-10-15 19:41:10,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 19:41:10,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 19:41:10,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 19:41:10,521 INFO L186 Difference]: Start difference. First operand has 5 places, 4 transitions, 8 flow. Second operand 3 states and 17 transitions. [2021-10-15 19:41:10,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 5 places, 2 transitions, 6 flow [2021-10-15 19:41:10,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 5 places, 2 transitions, 6 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:41:10,525 INFO L242 Difference]: Finished difference. Result has 5 places, 0 transitions, 0 flow [2021-10-15 19:41:10,528 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=9, PETRI_DIFFERENCE_MINUEND_FLOW=4, PETRI_DIFFERENCE_MINUEND_PLACES=3, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=5, PETRI_TRANSITIONS=0} [2021-10-15 19:41:10,529 INFO L334 CegarLoopForPetriNet]: 5 programPoint places, 0 predicate places. [2021-10-15 19:41:10,529 INFO L470 AbstractCegarLoop]: Abstraction has has 5 places, 0 transitions, 0 flow [2021-10-15 19:41:10,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 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 19:41:10,533 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:41:10,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-15 19:41:10,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:41:10,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:41:10,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:41:10 BoogieIcfgContainer [2021-10-15 19:41:10,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:41:10,756 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:41:10,756 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:41:10,756 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:41:10,757 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:41:09" (3/4) ... [2021-10-15 19:41:10,760 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:41:10,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:41:10,772 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:41:10,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-15 19:41:10,773 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:41:10,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:41:10,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:41:10,811 INFO L168 Benchmark]: Toolchain (without parser) took 2159.51 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 47.5 MB in the beginning and 63.0 MB in the end (delta: -15.5 MB). Peak memory consumption was 6.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:10,812 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:10,813 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.21 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 37.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:10,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 65.0 MB. Free memory was 49.6 MB in the beginning and 48.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:10,814 INFO L168 Benchmark]: Boogie Preprocessor took 60.64 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 47.3 MB in the end (delta: 888.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:10,815 INFO L168 Benchmark]: RCFGBuilder took 607.53 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 38.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:10,816 INFO L168 Benchmark]: TraceAbstraction took 1023.83 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 37.9 MB in the beginning and 64.9 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:41:10,817 INFO L168 Benchmark]: Witness Printer took 53.83 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:41:10,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 46.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 348.21 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 37.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.46 ms. Allocated memory is still 65.0 MB. Free memory was 49.6 MB in the beginning and 48.4 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.64 ms. Allocated memory is still 65.0 MB. Free memory was 48.2 MB in the beginning and 47.3 MB in the end (delta: 888.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 607.53 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 38.4 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1023.83 ms. Allocated memory was 65.0 MB in the beginning and 90.2 MB in the end (delta: 25.2 MB). Free memory was 37.9 MB in the beginning and 64.9 MB in the end (delta: -27.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 53.83 ms. Allocated memory is still 90.2 MB. Free memory was 64.9 MB in the beginning and 63.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. 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 - PositiveResult [Line: 6]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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: 951.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 54.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 39.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 12.7ms SsaConstructionTime, 60.2ms SatisfiabilityAnalysisTime, 398.0ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 5 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:41:10,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_97347e64-fdfb-42b9-822c-01bfbcaceecd/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...