./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eacc9d6782fe15df62304d6f37a239dbaeef8100e947201f1fc1e382f89b5777 ............................................................................................................................................................................................................................................................................................................................ 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_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash eacc9d6782fe15df62304d6f37a239dbaeef8100e947201f1fc1e382f89b5777 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:16:38,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:16:38,447 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:16:38,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:16:38,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:16:38,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:16:38,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:16:38,522 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:16:38,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:16:38,537 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:16:38,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:16:38,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:16:38,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:16:38,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:16:38,552 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:16:38,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:16:38,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:16:38,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:16:38,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:16:38,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:16:38,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:16:38,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:16:38,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:16:38,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:16:38,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:16:38,602 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:16:38,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:16:38,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:16:38,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:16:38,609 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:16:38,610 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:16:38,611 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:16:38,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:16:38,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:16:38,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:16:38,617 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:16:38,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:16:38,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:16:38,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:16:38,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:16:38,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:16:38,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:16:38,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:16:38,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:16:38,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:16:38,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:16:38,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:16:38,658 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:16:38,659 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:16:38,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:16:38,659 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:16:38,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:16:38,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:16:38,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:16:38,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:16:38,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:16:38,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:16:38,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:16:38,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:16:38,662 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:16:38,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:16:38,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:16:38,663 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:16:38,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:16:38,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:38,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:16:38,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:16:38,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:16:38,665 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:16:38,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:16:38,665 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:16:38,665 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:16:38,666 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:16:38,666 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:16:38,666 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_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eacc9d6782fe15df62304d6f37a239dbaeef8100e947201f1fc1e382f89b5777 [2021-10-28 09:16:38,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:16:39,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:16:39,039 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:16:39,040 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:16:39,041 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:16:39,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-10-28 09:16:39,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/bd0970af2/ff4b50908a5e41daa792b7a0da2d067f/FLAG9fe1bbbf1 [2021-10-28 09:16:39,682 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:16:39,683 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-10-28 09:16:39,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/bd0970af2/ff4b50908a5e41daa792b7a0da2d067f/FLAG9fe1bbbf1 [2021-10-28 09:16:40,017 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/bd0970af2/ff4b50908a5e41daa792b7a0da2d067f [2021-10-28 09:16:40,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:16:40,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:16:40,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:40,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:16:40,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:16:40,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b48fc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40, skipping insertion in model container [2021-10-28 09:16:40,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:16:40,074 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:40,307 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_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2021-10-28 09:16:40,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:40,323 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:16:40,367 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_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2021-10-28 09:16:40,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:40,388 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:16:40,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40 WrapperNode [2021-10-28 09:16:40,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:40,390 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:40,390 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:16:40,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:16:40,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,481 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:40,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:16:40,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:16:40,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:16:40,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:16:40,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:16:40,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:16:40,522 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:16:40,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (1/1) ... [2021-10-28 09:16:40,532 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:40,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:16:40,586 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:16:40,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:16:40,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:16:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:16:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:16:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 09:16:40,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 09:16:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:16:40,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:16:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:16:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-28 09:16:40,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:16:41,030 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:16:41,030 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 09:16:41,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:41 BoogieIcfgContainer [2021-10-28 09:16:41,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:16:41,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:16:41,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:16:41,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:16:41,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:16:40" (1/3) ... [2021-10-28 09:16:41,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7d6c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:41, skipping insertion in model container [2021-10-28 09:16:41,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:40" (2/3) ... [2021-10-28 09:16:41,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e7d6c2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:41, skipping insertion in model container [2021-10-28 09:16:41,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:41" (3/3) ... [2021-10-28 09:16:41,047 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2021-10-28 09:16:41,054 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:16:41,055 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:16:41,121 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:16:41,131 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:16:41,132 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:16:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:16:41,159 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:41,160 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:41,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:16:41,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:41,169 INFO L85 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-10-28 09:16:41,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:41,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766890847] [2021-10-28 09:16:41,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:41,183 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:41,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:16:41,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766890847] [2021-10-28 09:16:41,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766890847] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:41,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:41,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:16:41,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123904204] [2021-10-28 09:16:41,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:16:41,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:16:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:16:41,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:16:41,435 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:16:41,458 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-10-28 09:16:41,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:16:41,460 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 09:16:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:16:41,472 INFO L225 Difference]: With dead ends: 70 [2021-10-28 09:16:41,472 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 09:16:41,476 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:16:41,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 09:16:41,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 09:16:41,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2021-10-28 09:16:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 09:16:41,519 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-10-28 09:16:41,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:16:41,519 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 09:16:41,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-10-28 09:16:41,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:16:41,521 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:41,521 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:41,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:16:41,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:16:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:41,524 INFO L85 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-10-28 09:16:41,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:16:41,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659715491] [2021-10-28 09:16:41,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:41,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:16:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:41,602 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:16:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:16:41,684 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:16:41,685 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:16:41,687 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:16:41,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:16:41,694 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 09:16:41,697 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:16:41,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:16:41 BoogieIcfgContainer [2021-10-28 09:16:41,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:16:41,741 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:16:41,741 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:16:41,741 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:16:41,742 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:41" (3/4) ... [2021-10-28 09:16:41,747 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 09:16:41,747 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:16:41,750 INFO L168 Benchmark]: Toolchain (without parser) took 1726.56 ms. Allocated memory is still 117.4 MB. Free memory was 80.6 MB in the beginning and 43.0 MB in the end (delta: 37.6 MB). Peak memory consumption was 34.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,751 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 92.7 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:41,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.20 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 89.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,753 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 87.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,754 INFO L168 Benchmark]: Boogie Preprocessor took 38.37 ms. Allocated memory is still 117.4 MB. Free memory was 87.0 MB in the beginning and 85.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,755 INFO L168 Benchmark]: RCFGBuilder took 512.64 ms. Allocated memory is still 117.4 MB. Free memory was 84.9 MB in the beginning and 70.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,756 INFO L168 Benchmark]: TraceAbstraction took 703.84 ms. Allocated memory is still 117.4 MB. Free memory was 70.2 MB in the beginning and 43.7 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:41,757 INFO L168 Benchmark]: Witness Printer took 6.79 ms. Allocated memory is still 117.4 MB. Free memory was 43.7 MB in the beginning and 43.0 MB in the end (delta: 682.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:41,763 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 92.7 MB in the end (delta: 25.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.20 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 89.1 MB in the end (delta: -8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 91.05 ms. Allocated memory is still 117.4 MB. Free memory was 89.1 MB in the beginning and 87.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.37 ms. Allocated memory is still 117.4 MB. Free memory was 87.0 MB in the beginning and 85.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 512.64 ms. Allocated memory is still 117.4 MB. Free memory was 84.9 MB in the beginning and 70.8 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 703.84 ms. Allocated memory is still 117.4 MB. Free memory was 70.2 MB in the beginning and 43.7 MB in the end (delta: 26.5 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 6.79 ms. Allocated memory is still 117.4 MB. Free memory was 43.7 MB in the beginning and 43.0 MB in the end (delta: 682.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L119] float x = -0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={7:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 09:16:41,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:16:44,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:16:44,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:16:45,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:16:45,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:16:45,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:16:45,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:16:45,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:16:45,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:16:45,028 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:16:45,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:16:45,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:16:45,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:16:45,035 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:16:45,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:16:45,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:16:45,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:16:45,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:16:45,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:16:45,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:16:45,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:16:45,062 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:16:45,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:16:45,067 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:16:45,072 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:16:45,073 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:16:45,074 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:16:45,075 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:16:45,076 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:16:45,078 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:16:45,079 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:16:45,080 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:16:45,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:16:45,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:16:45,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:16:45,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:16:45,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:16:45,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:16:45,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:16:45,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:16:45,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:16:45,094 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 09:16:45,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:16:45,129 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:16:45,129 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:16:45,130 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:16:45,131 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:16:45,132 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:16:45,132 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:16:45,133 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:16:45,133 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:16:45,134 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:16:45,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:16:45,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:16:45,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:16:45,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:16:45,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 09:16:45,136 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 09:16:45,136 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:16:45,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:16:45,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:16:45,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:16:45,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:16:45,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:16:45,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:16:45,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:45,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:16:45,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:16:45,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:16:45,140 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 09:16:45,141 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 09:16:45,141 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:16:45,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:16:45,142 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:16:45,142 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:16:45,143 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 09:16:45,143 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_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eacc9d6782fe15df62304d6f37a239dbaeef8100e947201f1fc1e382f89b5777 [2021-10-28 09:16:45,575 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:16:45,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:16:45,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:16:45,622 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:16:45,624 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:16:45,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-10-28 09:16:45,709 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/822668f5e/d8a4fa36130f486992397d8478442f94/FLAGdcb5d584c [2021-10-28 09:16:46,362 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:16:46,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-10-28 09:16:46,372 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/822668f5e/d8a4fa36130f486992397d8478442f94/FLAGdcb5d584c [2021-10-28 09:16:46,712 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/data/822668f5e/d8a4fa36130f486992397d8478442f94 [2021-10-28 09:16:46,715 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:16:46,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:16:46,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:46,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:16:46,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:16:46,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:46" (1/1) ... [2021-10-28 09:16:46,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5b651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:46, skipping insertion in model container [2021-10-28 09:16:46,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:16:46" (1/1) ... [2021-10-28 09:16:46,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:16:46,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:16:47,107 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_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2021-10-28 09:16:47,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:47,205 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:16:47,289 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_7aa51641-a295-488c-890c-4e9c3153b6aa/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c[3181,3194] [2021-10-28 09:16:47,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:16:47,337 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:16:47,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47 WrapperNode [2021-10-28 09:16:47,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:16:47,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:47,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:16:47,340 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:16:47,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:16:47,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:16:47,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:16:47,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:16:47,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:16:47,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:16:47,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:16:47,532 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:16:47,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (1/1) ... [2021-10-28 09:16:47,560 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:16:47,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:16:47,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:16:47,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:16:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-28 09:16:47,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 09:16:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:16:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-28 09:16:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 09:16:47,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:16:47,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:16:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 09:16:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 09:16:47,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:16:57,454 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:16:57,454 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-28 09:16:57,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:57 BoogieIcfgContainer [2021-10-28 09:16:57,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:16:57,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:16:57,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:16:57,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:16:57,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:16:46" (1/3) ... [2021-10-28 09:16:57,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6b4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:57, skipping insertion in model container [2021-10-28 09:16:57,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:16:47" (2/3) ... [2021-10-28 09:16:57,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42d6b4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:16:57, skipping insertion in model container [2021-10-28 09:16:57,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:57" (3/3) ... [2021-10-28 09:16:57,470 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2021-10-28 09:16:57,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:16:57,478 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:16:57,553 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:16:57,564 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:16:57,564 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:16:57,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:57,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:16:57,600 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:57,601 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:57,601 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:16:57,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:57,607 INFO L85 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-10-28 09:16:57,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:16:57,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490235219] [2021-10-28 09:16:57,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:57,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:16:57,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:16:57,628 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:16:57,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 09:16:58,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:58,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 09:16:58,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:16:58,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:58,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:16:58,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:58,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:16:58,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490235219] [2021-10-28 09:16:58,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490235219] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:16:58,509 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:16:58,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 09:16:58,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289542932] [2021-10-28 09:16:58,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:16:58,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:16:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:16:58,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:16:58,544 INFO L87 Difference]: Start difference. First operand has 36 states, 34 states have (on average 1.6764705882352942) internal successors, (57), 35 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:16:58,569 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-10-28 09:16:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:16:58,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 09:16:58,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:16:58,583 INFO L225 Difference]: With dead ends: 70 [2021-10-28 09:16:58,583 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 09:16:58,593 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:16:58,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 09:16:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-28 09:16:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.34375) internal successors, (43), 32 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) [2021-10-28 09:16:58,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-10-28 09:16:58,645 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-10-28 09:16:58,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:16:58,645 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-28 09:16:58,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:16:58,647 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-10-28 09:16:58,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-28 09:16:58,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:16:58,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:16:58,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:16:58,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:16:58,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:16:58,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:16:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-10-28 09:16:58,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:16:58,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457485029] [2021-10-28 09:16:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:16:58,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:16:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:16:58,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:16:58,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 09:16:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:16:59,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:16:59,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:16:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:16:59,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:00,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:00,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:00,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457485029] [2021-10-28 09:17:00,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457485029] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:00,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:00,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-28 09:17:00,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139177070] [2021-10-28 09:17:00,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:17:00,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:17:00,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:17:00,178 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:07,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:07,529 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-10-28 09:17:07,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:17:07,614 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-28 09:17:07,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:07,615 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:17:07,615 INFO L226 Difference]: Without dead ends: 33 [2021-10-28 09:17:07,617 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:17:07,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-28 09:17:07,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-10-28 09:17:07,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1071428571428572) internal successors, (31), 28 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) [2021-10-28 09:17:07,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-28 09:17:07,623 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2021-10-28 09:17:07,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:07,624 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-28 09:17:07,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-28 09:17:07,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:17:07,625 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:07,626 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:07,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:07,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:07,841 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:17:07,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:07,842 INFO L85 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2021-10-28 09:17:07,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:07,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739147606] [2021-10-28 09:17:07,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:07,843 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:07,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:07,844 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:07,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 09:17:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:08,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:17:08,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:09,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:12,805 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:12,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739147606] [2021-10-28 09:17:12,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739147606] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:12,806 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:12,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-28 09:17:12,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8732404] [2021-10-28 09:17:12,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:17:12,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:12,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:17:12,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:17:12,808 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:40,926 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-28 09:17:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:17:40,927 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-28 09:17:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:40,928 INFO L225 Difference]: With dead ends: 33 [2021-10-28 09:17:40,928 INFO L226 Difference]: Without dead ends: 29 [2021-10-28 09:17:40,929 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:17:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-28 09:17:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-28 09:17:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 28 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-28 09:17:40,934 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-10-28 09:17:40,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:40,935 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-28 09:17:40,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-28 09:17:40,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:17:40,936 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:17:40,936 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:17:40,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:41,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:41,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:17:41,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:17:41,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2021-10-28 09:17:41,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 09:17:41,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725085753] [2021-10-28 09:17:41,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:17:41,148 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 09:17:41,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 09:17:41,149 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 09:17:41,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-28 09:17:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:17:42,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:17:42,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:17:43,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:43,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 09:17:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:17:46,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 09:17:46,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725085753] [2021-10-28 09:17:46,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [725085753] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 09:17:46,478 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:17:46,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-28 09:17:46,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198938703] [2021-10-28 09:17:46,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:17:46,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 09:17:46,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:17:46,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:17:46,481 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:46,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:17:46,651 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-28 09:17:46,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:17:46,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 09:17:46,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:17:46,652 INFO L225 Difference]: With dead ends: 29 [2021-10-28 09:17:46,652 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:17:46,653 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:17:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:17:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:17:46,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:17:46,654 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-28 09:17:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:17:46,655 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:17:46,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 5 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:17:46,655 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:17:46,655 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:17:46,658 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:17:46,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:17:46,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 09:17:46,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:17:46,877 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:17:46,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:17:46,907 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:17:46,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:17:46,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:17:47,051 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-10-28 09:17:47,051 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:17:47,052 INFO L857 garLoopResultBuilder]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-10-28 09:17:47,052 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:17:47,052 INFO L857 garLoopResultBuilder]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-10-28 09:17:47,052 INFO L857 garLoopResultBuilder]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-10-28 09:17:47,052 INFO L857 garLoopResultBuilder]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-10-28 09:17:47,053 INFO L853 garLoopResultBuilder]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-10-28 09:17:47,053 INFO L860 garLoopResultBuilder]: At program point L128(lines 113 129) the Hoare annotation is: true [2021-10-28 09:17:47,053 INFO L857 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2021-10-28 09:17:47,053 INFO L857 garLoopResultBuilder]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-10-28 09:17:47,053 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-10-28 09:17:47,054 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L857 garLoopResultBuilder]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-28 09:17:47,055 INFO L853 garLoopResultBuilder]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point L124(line 124) no Hoare annotation was computed. [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-10-28 09:17:47,056 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-10-28 09:17:47,057 INFO L857 garLoopResultBuilder]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-28 09:17:47,057 INFO L853 garLoopResultBuilder]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (.cse1 (fp.neg (_ +zero 8 24)))) (and (= ~one_exp~0 .cse0) (= ULTIMATE.start___ieee754_expf_~x .cse1) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 .cse1)) (= currentRoundingMode roundNearestTiesToEven))) [2021-10-28 09:17:47,057 INFO L857 garLoopResultBuilder]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-10-28 09:17:47,057 INFO L853 garLoopResultBuilder]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ULTIMATE.start___ieee754_expf_~x (fp.neg (_ +zero 8 24))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= currentRoundingMode roundNearestTiesToEven)) [2021-10-28 09:17:47,058 INFO L857 garLoopResultBuilder]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-10-28 09:17:47,066 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-10-28 09:17:47,068 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:17:47,080 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,088 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,091 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:17:47 BoogieIcfgContainer [2021-10-28 09:17:47,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:17:47,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:17:47,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:17:47,098 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:17:47,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:16:57" (3/4) ... [2021-10-28 09:17:47,105 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:17:47,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-28 09:17:47,122 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-28 09:17:47,123 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:17:47,127 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:17:47,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2021-10-28 09:17:47,233 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:17:47,233 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:17:47,235 INFO L168 Benchmark]: Toolchain (without parser) took 60516.74 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.9 MB in the beginning and 43.1 MB in the end (delta: -10.3 MB). Peak memory consumption was 21.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,236 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:17:47,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 619.57 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 48.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,237 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.95 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 46.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,238 INFO L168 Benchmark]: Boogie Preprocessor took 92.29 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 44.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,238 INFO L168 Benchmark]: RCFGBuilder took 9925.33 ms. Allocated memory is still 67.1 MB. Free memory was 44.1 MB in the beginning and 44.0 MB in the end (delta: 106.7 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,239 INFO L168 Benchmark]: TraceAbstraction took 49636.82 ms. Allocated memory is still 67.1 MB. Free memory was 43.5 MB in the beginning and 26.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,239 INFO L168 Benchmark]: Witness Printer took 135.52 ms. Allocated memory is still 67.1 MB. Free memory was 26.0 MB in the beginning and 43.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:17:47,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 44.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 619.57 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 32.7 MB in the beginning and 48.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.95 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 46.0 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.29 ms. Allocated memory is still 67.1 MB. Free memory was 46.0 MB in the beginning and 44.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9925.33 ms. Allocated memory is still 67.1 MB. Free memory was 44.1 MB in the beginning and 44.0 MB in the end (delta: 106.7 kB). Peak memory consumption was 16.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 49636.82 ms. Allocated memory is still 67.1 MB. Free memory was 43.5 MB in the beginning and 26.0 MB in the end (delta: 17.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Witness Printer took 135.52 ms. Allocated memory is still 67.1 MB. Free memory was 26.0 MB in the beginning and 43.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 124]: 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, 36 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 49.5s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 35.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 103 SDslu, 173 SDs, 0 SdLazy, 57 SolverSat, 5 SolverUnsat, 16 SolverUnknown, 0 SolverNotchecked, 34.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 2.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.9s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 704 SizeOfPredicates, 19 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 - InvariantResult [Line: 38]: Loop Invariant [2021-10-28 09:17:47,255 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,255 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 43]: Loop Invariant [2021-10-28 09:17:47,257 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-28 09:17:47,258 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-28 09:17:47,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7aa51641-a295-488c-890c-4e9c3153b6aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...