./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.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_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD --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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 ......................................................................................................................................................................................................................................................................................................... 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_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD --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 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 .............................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:18:08,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:18:08,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:18:08,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:18:08,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:18:08,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:18:08,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:18:08,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:18:08,687 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:18:08,689 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:18:08,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:18:08,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:18:08,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:18:08,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:18:08,698 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:18:08,700 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:18:08,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:18:08,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:18:08,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:18:08,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:18:08,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:18:08,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:18:08,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:18:08,720 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:18:08,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:18:08,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:18:08,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:18:08,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:18:08,732 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:18:08,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:18:08,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:18:08,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:18:08,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:18:08,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:18:08,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:18:08,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:18:08,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:18:08,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:18:08,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:18:08,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:18:08,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:18:08,746 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:18:08,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:18:08,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:18:08,783 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:18:08,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:18:08,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:18:08,786 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:18:08,786 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:18:08,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:18:08,787 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:18:08,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:18:08,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:18:08,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:18:08,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:18:08,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:18:08,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:18:08,789 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:18:08,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:18:08,790 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:18:08,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:18:08,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:18:08,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:18:08,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:18:08,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:08,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:18:08,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:18:08,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:18:08,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:18:08,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:18:08,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:18:08,794 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:18:08,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:18:08,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:18:08,794 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_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-10-28 23:18:09,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:18:09,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:18:09,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:18:09,158 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:18:09,159 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:18:09,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-28 23:18:09,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/fb9415fe1/144067ea8f524123900287492ce4614d/FLAG47c39353c [2021-10-28 23:18:09,832 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:18:09,838 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-28 23:18:09,848 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/fb9415fe1/144067ea8f524123900287492ce4614d/FLAG47c39353c [2021-10-28 23:18:10,153 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/fb9415fe1/144067ea8f524123900287492ce4614d [2021-10-28 23:18:10,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:18:10,158 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:18:10,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:10,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:18:10,165 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:18:10,166 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eea7197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10, skipping insertion in model container [2021-10-28 23:18:10,168 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:18:10,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:18:10,474 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_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-28 23:18:10,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:10,489 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:18:10,523 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_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-28 23:18:10,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:10,542 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:18:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10 WrapperNode [2021-10-28 23:18:10,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:10,544 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:10,545 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:18:10,545 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:18:10,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:10,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:18:10,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:18:10,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:18:10,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:18:10,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:18:10,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:18:10,649 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:18:10,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (1/1) ... [2021-10-28 23:18:10,661 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:10,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:10,695 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:10,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:18:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:18:10,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:18:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-28 23:18:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:18:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-28 23:18:10,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:18:10,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:18:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:18:10,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:18:11,172 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:18:11,172 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-28 23:18:11,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:11 BoogieIcfgContainer [2021-10-28 23:18:11,175 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:18:11,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:18:11,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:18:11,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:18:11,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:18:10" (1/3) ... [2021-10-28 23:18:11,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0104c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:11, skipping insertion in model container [2021-10-28 23:18:11,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:10" (2/3) ... [2021-10-28 23:18:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0104c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:11, skipping insertion in model container [2021-10-28 23:18:11,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:11" (3/3) ... [2021-10-28 23:18:11,203 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-10-28 23:18:11,210 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:18:11,211 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:18:11,294 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:18:11,307 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 23:18:11,307 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:18:11,334 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:11,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:18:11,341 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:11,342 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:11,342 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:11,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:11,349 INFO L85 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2021-10-28 23:18:11,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:11,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56115734] [2021-10-28 23:18:11,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:11,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:11,586 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 23:18:11,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:18:11,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56115734] [2021-10-28 23:18:11,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56115734] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:11,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:11,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:18:11,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455458380] [2021-10-28 23:18:11,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:18:11,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:18:11,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:18:11,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:18:11,618 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:11,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:11,641 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-10-28 23:18:11,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:18:11,643 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:18:11,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:11,655 INFO L225 Difference]: With dead ends: 67 [2021-10-28 23:18:11,655 INFO L226 Difference]: Without dead ends: 31 [2021-10-28 23:18:11,658 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 23:18:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-28 23:18:11,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-28 23:18:11,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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 23:18:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-10-28 23:18:11,703 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-10-28 23:18:11,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:11,704 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-10-28 23:18:11,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:11,705 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-10-28 23:18:11,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:18:11,706 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:11,706 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:11,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:18:11,707 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2021-10-28 23:18:11,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:18:11,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771919572] [2021-10-28 23:18:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:11,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:18:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:11,765 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:18:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:18:11,875 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:18:11,876 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:18:11,878 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:18:11,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:18:11,885 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:18:11,887 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:18:11,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:18:11 BoogieIcfgContainer [2021-10-28 23:18:11,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:18:11,920 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:18:11,920 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:18:11,921 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:18:11,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:11" (3/4) ... [2021-10-28 23:18:11,925 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:18:11,925 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:18:11,928 INFO L168 Benchmark]: Toolchain (without parser) took 1768.29 ms. Allocated memory is still 98.6 MB. Free memory was 78.0 MB in the beginning and 57.3 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:11,929 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:11,930 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.28 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 73.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:11,930 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 71.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:11,931 INFO L168 Benchmark]: Boogie Preprocessor took 39.20 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 70.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:11,932 INFO L168 Benchmark]: RCFGBuilder took 537.39 ms. Allocated memory is still 98.6 MB. Free memory was 70.2 MB in the beginning and 57.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:11,933 INFO L168 Benchmark]: TraceAbstraction took 742.93 ms. Allocated memory is still 98.6 MB. Free memory was 57.5 MB in the beginning and 57.3 MB in the end (delta: 219.8 kB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2021-10-28 23:18:11,934 INFO L168 Benchmark]: Witness Printer took 5.45 ms. Allocated memory is still 98.6 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:18:11,938 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 77.6 MB. Free memory was 56.3 MB in the beginning and 56.3 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 383.28 ms. Allocated memory is still 98.6 MB. Free memory was 77.7 MB in the beginning and 73.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.05 ms. Allocated memory is still 98.6 MB. Free memory was 73.5 MB in the beginning and 71.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.20 ms. Allocated memory is still 98.6 MB. Free memory was 71.8 MB in the beginning and 70.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 537.39 ms. Allocated memory is still 98.6 MB. Free memory was 70.2 MB in the beginning and 57.8 MB in the end (delta: 12.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 742.93 ms. Allocated memory is still 98.6 MB. Free memory was 57.5 MB in the beginning and 57.3 MB in the end (delta: 219.8 kB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.45 ms. Allocated memory is still 98.6 MB. Free memory is still 57.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 100]: 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 15, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 32. Possible FailurePath: [L17] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L93] float x = __VERIFIER_nondet_float(); [L94] COND TRUE x < -0.0f [L20] float z; [L21] __uint32_t r, hx; [L22] __int32_t ix, s, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (ix) = gf_u.word [L29] hx = ix & 0x7fffffff VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L31] COND TRUE !((hx) < 0x7f800000L) [L32] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L96] float res = __ieee754_sqrtf(x); [L15] return x != x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L99] COND TRUE !isnan_float(res) [L100] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 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=35occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 9 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 23:18:12,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/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 23:18:14,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:18:14,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:18:15,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:18:15,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:18:15,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:18:15,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:18:15,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:18:15,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:18:15,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:18:15,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:18:15,045 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:18:15,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:18:15,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:18:15,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:18:15,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:18:15,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:18:15,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:18:15,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:18:15,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:18:15,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:18:15,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:18:15,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:18:15,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:18:15,094 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:18:15,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:18:15,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:18:15,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:18:15,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:18:15,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:18:15,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:18:15,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:18:15,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:18:15,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:18:15,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:18:15,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:18:15,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:18:15,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:18:15,106 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:18:15,107 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:18:15,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:18:15,109 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:18:15,141 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:18:15,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:18:15,142 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:18:15,142 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:18:15,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:18:15,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:18:15,145 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:18:15,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:18:15,145 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:18:15,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:18:15,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:18:15,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:18:15,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:18:15,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:18:15,147 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:18:15,147 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:18:15,148 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:18:15,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:18:15,148 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:18:15,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:18:15,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:18:15,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:18:15,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:18:15,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:15,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:18:15,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:18:15,151 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:18:15,151 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:18:15,151 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:18:15,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:18:15,152 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:18:15,152 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:18:15,152 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:18:15,153 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:18:15,153 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_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 213c24ef3c7753bf19a615c5715fd8340a45826778b0f8f910dadd2d17208462 [2021-10-28 23:18:15,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:18:15,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:18:15,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:18:15,678 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:18:15,679 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:18:15,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-28 23:18:15,770 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/bbdd59190/2bd5512a0799425bac609baad523afbc/FLAGfbbc99c54 [2021-10-28 23:18:16,365 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:18:16,366 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c [2021-10-28 23:18:16,387 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/bbdd59190/2bd5512a0799425bac609baad523afbc/FLAGfbbc99c54 [2021-10-28 23:18:16,737 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/data/bbdd59190/2bd5512a0799425bac609baad523afbc [2021-10-28 23:18:16,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:18:16,744 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:18:16,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:16,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:18:16,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:18:16,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:16" (1/1) ... [2021-10-28 23:18:16,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4490a084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:16, skipping insertion in model container [2021-10-28 23:18:16,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:18:16" (1/1) ... [2021-10-28 23:18:16,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:18:16,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:18:17,084 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_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-28 23:18:17,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:17,115 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:18:17,226 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_467c500d-cd12-4390-bc32-caec191a0792/sv-benchmarks/c/float-newlib/float_req_bl_0710.c[1961,1974] [2021-10-28 23:18:17,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:18:17,258 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:18:17,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17 WrapperNode [2021-10-28 23:18:17,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:18:17,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:17,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:18:17,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:18:17,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,348 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:18:17,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:18:17,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:18:17,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:18:17,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,407 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,438 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:18:17,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:18:17,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:18:17,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:18:17,441 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (1/1) ... [2021-10-28 23:18:17,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:18:17,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:18:17,487 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:18:17,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:18:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:18:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:18:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-28 23:18:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-28 23:18:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:18:17,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:18:17,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-28 23:18:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-28 23:18:17,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:18:18,680 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:18:18,680 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-10-28 23:18:18,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:18 BoogieIcfgContainer [2021-10-28 23:18:18,683 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:18:18,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:18:18,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:18:18,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:18:18,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:18:16" (1/3) ... [2021-10-28 23:18:18,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587d6191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:18, skipping insertion in model container [2021-10-28 23:18:18,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:18:17" (2/3) ... [2021-10-28 23:18:18,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@587d6191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:18:18, skipping insertion in model container [2021-10-28 23:18:18,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:18:18" (3/3) ... [2021-10-28 23:18:18,713 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0710.c [2021-10-28 23:18:18,721 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:18:18,725 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:18:18,810 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:18:18,824 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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 23:18:18,824 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:18:18,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:18,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 23:18:18,854 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:18,855 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:18,856 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:18,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:18,870 INFO L85 PathProgramCache]: Analyzing trace with hash 860611220, now seen corresponding path program 1 times [2021-10-28 23:18:18,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:18:18,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819535450] [2021-10-28 23:18:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:18,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:18:18,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:18:18,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:18:18,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:18:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:19,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:18:19,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:19,294 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 23:18:19,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:18:19,390 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 23:18:19,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:18:19,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819535450] [2021-10-28 23:18:19,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819535450] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:18:19,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:18:19,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:18:19,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995455875] [2021-10-28 23:18:19,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:18:19,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:18:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:18:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:18:19,433 INFO L87 Difference]: Start difference. First operand has 35 states, 33 states have (on average 1.606060606060606) internal successors, (53), 34 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:19,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:18:19,464 INFO L93 Difference]: Finished difference Result 67 states and 102 transitions. [2021-10-28 23:18:19,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:18:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-28 23:18:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:18:19,479 INFO L225 Difference]: With dead ends: 67 [2021-10-28 23:18:19,479 INFO L226 Difference]: Without dead ends: 31 [2021-10-28 23:18:19,484 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 23:18:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-28 23:18:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-10-28 23:18:19,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 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 23:18:19,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-10-28 23:18:19,539 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-10-28 23:18:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:18:19,539 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-10-28 23:18:19,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:18:19,540 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-10-28 23:18:19,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 23:18:19,541 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:18:19,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:18:19,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:18:19,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:18:19,758 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:18:19,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:18:19,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1279985196, now seen corresponding path program 1 times [2021-10-28 23:18:19,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:18:19,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1496377467] [2021-10-28 23:18:19,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:18:19,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:18:19,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:18:19,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:18:19,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:18:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:18:20,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-28 23:18:20,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:18:29,275 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 23:18:29,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:19:24,667 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 23:19:24,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:19:24,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1496377467] [2021-10-28 23:19:24,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1496377467] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:19:24,668 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:19:24,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2021-10-28 23:19:24,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200921160] [2021-10-28 23:19:24,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 23:19:24,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:19:24,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 23:19:24,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-10-28 23:19:24,673 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 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 23:19:50,739 WARN L207 SmtUtils]: Spent 7.56 s on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-10-28 23:20:01,699 WARN L207 SmtUtils]: Spent 7.50 s on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-10-28 23:20:05,558 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-28 23:20:05,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-10-28 23:20:05,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:20:05,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:20:05,761 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.pop(ManagedScript.java:128) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.unAssertPostcondition(IncrementalHoareTripleChecker.java:662) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.clearAssertionStack(IncrementalHoareTripleChecker.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.releaseLock(IncrementalHoareTripleChecker.java:281) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.releaseLock(ProtectiveHoareTripleChecker.java:93) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.releaseLock(EfficientHoareTripleChecker.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.releaseLock(CachingHoareTripleChecker.java:201) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.switchToReadonlyMode(AbstractInterpolantAutomaton.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:886) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:783) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:462) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:420) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 35 more [2021-10-28 23:20:05,767 INFO L168 Benchmark]: Toolchain (without parser) took 109022.37 ms. Allocated memory was 67.1 MB in the beginning and 90.2 MB in the end (delta: 23.1 MB). Free memory was 46.0 MB in the beginning and 39.6 MB in the end (delta: 6.4 MB). Peak memory consumption was 29.3 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:05,769 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:05,770 INFO L168 Benchmark]: CACSL2BoogieTranslator took 513.38 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 48.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:05,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 89.18 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:20:05,775 INFO L168 Benchmark]: Boogie Preprocessor took 87.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:05,776 INFO L168 Benchmark]: RCFGBuilder took 1243.58 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 32.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:05,777 INFO L168 Benchmark]: TraceAbstraction took 107063.99 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 39.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:20:05,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 67.1 MB. Free memory is still 47.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 513.38 ms. Allocated memory is still 67.1 MB. Free memory was 45.8 MB in the beginning and 48.5 MB in the end (delta: -2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 89.18 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 87.72 ms. Allocated memory is still 67.1 MB. Free memory was 46.6 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1243.58 ms. Allocated memory is still 67.1 MB. Free memory was 44.9 MB in the beginning and 32.3 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 107063.99 ms. Allocated memory is still 90.2 MB. Free memory was 71.6 MB in the beginning and 39.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 30.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467c500d-cd12-4390-bc32-caec191a0792/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...