./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 d4bd0cf85a8b4097fbfac5e1603bb0ef2263d21f1b9906b4152c353aa17e726a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:07,640 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:07,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 20:59:07,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:07,729 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:07,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:07,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:07,760 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:07,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:59:07,762 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:59:07,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:07,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:07,765 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:07,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:07,766 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:07,767 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:07,768 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:59:07,769 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:07,769 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 20:59:07,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:07,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:07,772 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:59:07,773 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:07,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:59:07,774 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:07,775 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:59:07,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:07,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:07,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:07,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:07,778 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:07,778 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:07,779 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:07,780 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:07,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:59:07,781 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 20:59:07,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 20:59:07,782 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:07,782 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:07,782 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:59:07,783 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:07,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:07,784 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4bd0cf85a8b4097fbfac5e1603bb0ef2263d21f1b9906b4152c353aa17e726a [2023-11-21 20:59:08,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:08,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:08,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:08,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:08,158 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:08,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2023-11-21 20:59:11,577 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:11,871 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:11,872 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2023-11-21 20:59:11,880 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/03b500d2d/2faecf1f632f464ea53cf41c6aa8948f/FLAG11bfb2ae3 [2023-11-21 20:59:12,227 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/03b500d2d/2faecf1f632f464ea53cf41c6aa8948f [2023-11-21 20:59:12,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:12,232 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:12,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:12,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:12,241 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:12,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38829741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12, skipping insertion in model container [2023-11-21 20:59:12,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,270 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:12,467 WARN L240 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2023-11-21 20:59:12,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:12,488 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:12,527 WARN L240 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2023-11-21 20:59:12,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:12,547 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:12,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12 WrapperNode [2023-11-21 20:59:12,548 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:12,550 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:12,551 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:12,551 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:12,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,624 INFO L138 Inliner]: procedures = 19, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 216 [2023-11-21 20:59:12,625 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:12,626 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:12,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:12,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:12,638 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,639 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,642 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,658 INFO L187 HeapSplitter]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2] [2023-11-21 20:59:12,658 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,658 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,670 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,675 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,680 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,685 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:12,686 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:12,686 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:12,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:12,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (1/1) ... [2023-11-21 20:59:12,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:12,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:12,725 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:12,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:12,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 20:59:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 20:59:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 20:59:12,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 20:59:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 20:59:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:59:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2023-11-21 20:59:12,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2023-11-21 20:59:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2023-11-21 20:59:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2023-11-21 20:59:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2023-11-21 20:59:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 20:59:12,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 20:59:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 20:59:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 20:59:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 20:59:12,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2023-11-21 20:59:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2023-11-21 20:59:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2023-11-21 20:59:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2023-11-21 20:59:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2023-11-21 20:59:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:12,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-21 20:59:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-21 20:59:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-21 20:59:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-21 20:59:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-21 20:59:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:12,930 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:12,933 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:13,302 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:13,554 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:13,555 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 20:59:13,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:13 BoogieIcfgContainer [2023-11-21 20:59:13,557 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:13,560 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:13,560 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:13,564 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:13,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:12" (1/3) ... [2023-11-21 20:59:13,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7327b1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:13, skipping insertion in model container [2023-11-21 20:59:13,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:12" (2/3) ... [2023-11-21 20:59:13,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7327b1ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:13, skipping insertion in model container [2023-11-21 20:59:13,567 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:13" (3/3) ... [2023-11-21 20:59:13,568 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2023-11-21 20:59:13,588 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:13,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 20:59:13,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:13,649 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@49710892, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:13,649 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 20:59:13,658 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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) [2023-11-21 20:59:13,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:59:13,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:13,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:13,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:13,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:13,686 INFO L85 PathProgramCache]: Analyzing trace with hash -566207135, now seen corresponding path program 1 times [2023-11-21 20:59:13,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:13,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125829472] [2023-11-21 20:59:13,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:13,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:13,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 20:59:13,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125829472] [2023-11-21 20:59:13,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125829472] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:13,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:13,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:13,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20858604] [2023-11-21 20:59:13,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:13,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:13,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 20:59:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:13,990 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:14,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:14,065 INFO L93 Difference]: Finished difference Result 51 states and 79 transitions. [2023-11-21 20:59:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:14,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 20:59:14,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:14,077 INFO L225 Difference]: With dead ends: 51 [2023-11-21 20:59:14,077 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 20:59:14,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:14,084 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:14,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-21 20:59:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 20:59:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-21 20:59:14,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2023-11-21 20:59:14,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-21 20:59:14,121 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 9 [2023-11-21 20:59:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:14,122 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-21 20:59:14,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:14,123 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-21 20:59:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 20:59:14,123 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:14,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:14,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 20:59:14,124 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:14,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:14,125 INFO L85 PathProgramCache]: Analyzing trace with hash 790072700, now seen corresponding path program 1 times [2023-11-21 20:59:14,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 20:59:14,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110088971] [2023-11-21 20:59:14,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:14,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 20:59:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:14,218 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 20:59:14,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 20:59:14,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 20:59:14,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 20:59:14,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 20:59:14,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 20:59:14,342 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-21 20:59:14,346 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 20:59:14,381 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated [2023-11-21 20:59:14,382 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated [2023-11-21 20:59:14,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 08:59:14 BoogieIcfgContainer [2023-11-21 20:59:14,411 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 20:59:14,416 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:59:14,416 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:59:14,416 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:59:14,417 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:13" (3/4) ... [2023-11-21 20:59:14,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 20:59:14,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:59:14,423 INFO L158 Benchmark]: Toolchain (without parser) took 2191.28ms. Allocated memory is still 176.2MB. Free memory was 144.5MB in the beginning and 107.5MB in the end (delta: 37.0MB). Peak memory consumption was 39.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,425 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 113.2MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:14,429 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.01ms. Allocated memory is still 176.2MB. Free memory was 144.1MB in the beginning and 131.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,430 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.15ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,435 INFO L158 Benchmark]: Boogie Preprocessor took 59.73ms. Allocated memory is still 176.2MB. Free memory was 129.4MB in the beginning and 126.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,435 INFO L158 Benchmark]: RCFGBuilder took 871.12ms. Allocated memory is still 176.2MB. Free memory was 126.1MB in the beginning and 141.8MB in the end (delta: -15.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,436 INFO L158 Benchmark]: TraceAbstraction took 851.68ms. Allocated memory is still 176.2MB. Free memory was 141.1MB in the beginning and 107.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:14,436 INFO L158 Benchmark]: Witness Printer took 6.68ms. Allocated memory is still 176.2MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:14,441 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 113.2MB. Free memory was 62.5MB in the beginning and 62.4MB in the end (delta: 142.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.01ms. Allocated memory is still 176.2MB. Free memory was 144.1MB in the beginning and 131.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.15ms. Allocated memory is still 176.2MB. Free memory was 131.5MB in the beginning and 129.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.73ms. Allocated memory is still 176.2MB. Free memory was 129.4MB in the beginning and 126.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 871.12ms. Allocated memory is still 176.2MB. Free memory was 126.1MB in the beginning and 141.8MB in the end (delta: -15.7MB). Peak memory consumption was 37.5MB. Max. memory is 16.1GB. * TraceAbstraction took 851.68ms. Allocated memory is still 176.2MB. Free memory was 141.1MB in the beginning and 107.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 6.68ms. Allocated memory is still 176.2MB. Free memory is still 107.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~ret14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short15 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * 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: 142]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 113, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; [L134] float x = __VERIFIER_nondet_float(); [L136] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L136] EXPR x < 0 && isfinite_float(x) [L136] CALL, EXPR isfinite_float(x) [L117] __int32_t ix; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L119] ieee_float_shape_type gf_u; [L120] EXPR gf_u.value = (x) [L121] EXPR gf_u.word [L121] EXPR (ix) = gf_u.word [L118-L122] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ix=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L123] ix &= 0x7fffffff [L124] return (((ix) < 0x7f800000L)); [L136] RET, EXPR isfinite_float(x) [L136] EXPR x < 0 && isfinite_float(x) VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L136] COND TRUE (x < 0 && isfinite_float(x)) [L138] CALL, EXPR __ieee754_logf(x) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] EXPR gf_u.value = (x) [L41] EXPR gf_u.word [L41] EXPR (ix) = gf_u.word [L38-L42] { ieee_float_shape_type gf_u; gf_u.value = (x); (ix) = gf_u.word; } VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ix=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ix=0, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \old(x)=33554446, ix=0, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554446, zero_log=0] [L138] RET, EXPR __ieee754_logf(x) [L138] float res = __ieee754_logf(x); [L141] CALL, EXPR isnan_float(res) [L113] return x != x; [L141] RET, EXPR isnan_float(res) [L141] COND TRUE !isnan_float(res) [L142] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=33554445, two25_log=33554432, x=33554446, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18 IncrementalHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 18 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 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 [2023-11-21 20:59:14,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 d4bd0cf85a8b4097fbfac5e1603bb0ef2263d21f1b9906b4152c353aa17e726a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 20:59:17,460 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 20:59:17,600 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-21 20:59:17,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 20:59:17,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 20:59:17,655 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 20:59:17,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 20:59:17,656 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 20:59:17,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 20:59:17,662 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 20:59:17,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 20:59:17,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 20:59:17,664 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 20:59:17,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 20:59:17,667 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 20:59:17,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 20:59:17,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 20:59:17,669 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 20:59:17,669 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 20:59:17,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 20:59:17,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 20:59:17,671 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 20:59:17,672 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 20:59:17,672 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 20:59:17,673 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 20:59:17,673 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 20:59:17,674 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 20:59:17,674 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 20:59:17,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 20:59:17,675 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 20:59:17,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 20:59:17,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 20:59:17,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 20:59:17,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:17,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 20:59:17,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 20:59:17,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 20:59:17,680 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 20:59:17,680 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 20:59:17,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 20:59:17,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 20:59:17,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 20:59:17,682 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 20:59:17,682 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 20:59:17,683 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 20:59:17,683 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4bd0cf85a8b4097fbfac5e1603bb0ef2263d21f1b9906b4152c353aa17e726a [2023-11-21 20:59:18,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 20:59:18,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 20:59:18,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 20:59:18,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 20:59:18,193 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 20:59:18,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2023-11-21 20:59:21,336 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 20:59:21,645 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 20:59:21,650 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c [2023-11-21 20:59:21,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/4cde7fb62/203144da52804c409443149c10bbbc14/FLAGf52997813 [2023-11-21 20:59:21,682 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/data/4cde7fb62/203144da52804c409443149c10bbbc14 [2023-11-21 20:59:21,688 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 20:59:21,690 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 20:59:21,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:21,693 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 20:59:21,698 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 20:59:21,699 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:21" (1/1) ... [2023-11-21 20:59:21,700 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c317183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:21, skipping insertion in model container [2023-11-21 20:59:21,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 08:59:21" (1/1) ... [2023-11-21 20:59:21,740 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 20:59:22,021 WARN L240 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2023-11-21 20:59:22,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:22,052 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 20:59:22,114 WARN L240 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_4d95adbf-e810-4dfb-ac3d-b2145e7817de/sv-benchmarks/c/float-newlib/float_req_bl_0920a.c[3541,3554] [2023-11-21 20:59:22,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 20:59:22,143 INFO L206 MainTranslator]: Completed translation [2023-11-21 20:59:22,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22 WrapperNode [2023-11-21 20:59:22,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 20:59:22,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:22,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 20:59:22,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 20:59:22,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,182 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,210 INFO L138 Inliner]: procedures = 22, calls = 30, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-11-21 20:59:22,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 20:59:22,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 20:59:22,212 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 20:59:22,212 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 20:59:22,224 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,224 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,230 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,244 INFO L187 HeapSplitter]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2] [2023-11-21 20:59:22,244 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,245 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,268 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,274 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 20:59:22,275 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 20:59:22,275 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 20:59:22,275 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 20:59:22,276 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (1/1) ... [2023-11-21 20:59:22,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 20:59:22,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 20:59:22,321 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 20:59:22,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 20:59:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 20:59:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-21 20:59:22,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-21 20:59:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-21 20:59:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-21 20:59:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-21 20:59:22,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 20:59:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2023-11-21 20:59:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2023-11-21 20:59:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2023-11-21 20:59:22,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2023-11-21 20:59:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2023-11-21 20:59:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-21 20:59:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-21 20:59:22,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-21 20:59:22,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-21 20:59:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-21 20:59:22,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 20:59:22,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 20:59:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2023-11-21 20:59:22,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2023-11-21 20:59:22,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2023-11-21 20:59:22,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2023-11-21 20:59:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2023-11-21 20:59:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-21 20:59:22,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-21 20:59:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-21 20:59:22,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-21 20:59:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-21 20:59:22,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 20:59:22,529 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 20:59:22,532 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 20:59:37,898 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 20:59:37,994 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 20:59:37,994 INFO L308 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-21 20:59:37,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:37 BoogieIcfgContainer [2023-11-21 20:59:37,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 20:59:37,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 20:59:38,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 20:59:38,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 20:59:38,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 08:59:21" (1/3) ... [2023-11-21 20:59:38,021 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3fe8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:38, skipping insertion in model container [2023-11-21 20:59:38,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 08:59:22" (2/3) ... [2023-11-21 20:59:38,023 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3fe8e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 08:59:38, skipping insertion in model container [2023-11-21 20:59:38,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:37" (3/3) ... [2023-11-21 20:59:38,027 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0920a.c [2023-11-21 20:59:38,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 20:59:38,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 20:59:38,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 20:59:38,123 INFO L357 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=LoopHeads, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55d6639e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 20:59:38,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 20:59:38,129 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 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) [2023-11-21 20:59:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 20:59:38,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:38,136 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:38,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:38,145 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1067907207, now seen corresponding path program 1 times [2023-11-21 20:59:38,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:38,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976345696] [2023-11-21 20:59:38,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:38,160 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:38,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:38,161 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:38,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 20:59:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:38,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-21 20:59:38,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:38,802 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:38,804 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:38,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976345696] [2023-11-21 20:59:38,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976345696] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:38,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:38,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 20:59:38,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984610441] [2023-11-21 20:59:38,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:38,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-21 20:59:38,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:38,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-21 20:59:38,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 20:59:38,866 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 25 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:40,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:40,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:40,977 INFO L93 Difference]: Finished difference Result 50 states and 77 transitions. [2023-11-21 20:59:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-21 20:59:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-21 20:59:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:41,034 INFO L225 Difference]: With dead ends: 50 [2023-11-21 20:59:41,034 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 20:59:41,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-21 20:59:41,043 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:41,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2023-11-21 20:59:41,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 20:59:41,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-21 20:59:41,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 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) [2023-11-21 20:59:41,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-21 20:59:41,096 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 9 [2023-11-21 20:59:41,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:41,097 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-21 20:59:41,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:41,097 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-21 20:59:41,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-21 20:59:41,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:41,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:41,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:41,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:41,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:41,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:41,315 INFO L85 PathProgramCache]: Analyzing trace with hash -811854216, now seen corresponding path program 1 times [2023-11-21 20:59:41,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:41,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546113450] [2023-11-21 20:59:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:41,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:41,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:41,320 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:41,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 20:59:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:41,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 20:59:41,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:41,972 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:41,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:41,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546113450] [2023-11-21 20:59:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546113450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:41,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:41,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 20:59:41,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63948613] [2023-11-21 20:59:41,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:41,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 20:59:41,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:41,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 20:59:41,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:41,977 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-21 20:59:44,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:46,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-21 20:59:46,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:46,528 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2023-11-21 20:59:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 20:59:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2023-11-21 20:59:46,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:46,602 INFO L225 Difference]: With dead ends: 41 [2023-11-21 20:59:46,602 INFO L226 Difference]: Without dead ends: 23 [2023-11-21 20:59:46,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 20:59:46,605 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:46,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2023-11-21 20:59:46,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-21 20:59:46,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-21 20:59:46,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2023-11-21 20:59:46,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-21 20:59:46,615 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 10 [2023-11-21 20:59:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:46,617 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-21 20:59:46,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2023-11-21 20:59:46,618 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-21 20:59:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 20:59:46,618 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:46,619 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:46,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:46,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:46,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:46,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:46,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1634540192, now seen corresponding path program 1 times [2023-11-21 20:59:46,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:46,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [114570811] [2023-11-21 20:59:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:46,822 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:46,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:46,823 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:46,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 20:59:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:47,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 20:59:47,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:48,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 20:59:48,220 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2023-11-21 20:59:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:48,501 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:48,501 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:48,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [114570811] [2023-11-21 20:59:48,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [114570811] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:48,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:48,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 20:59:48,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480551138] [2023-11-21 20:59:48,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:48,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 20:59:48,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 20:59:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 20:59:48,504 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-21 20:59:50,541 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-21 20:59:50,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:50,860 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2023-11-21 20:59:50,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 20:59:50,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2023-11-21 20:59:50,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:50,862 INFO L225 Difference]: With dead ends: 27 [2023-11-21 20:59:50,862 INFO L226 Difference]: Without dead ends: 15 [2023-11-21 20:59:50,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-21 20:59:50,864 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 19 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:50,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-21 20:59:50,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-21 20:59:50,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-21 20:59:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2023-11-21 20:59:50,870 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 13 [2023-11-21 20:59:50,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:50,871 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2023-11-21 20:59:50,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-21 20:59:50,871 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2023-11-21 20:59:50,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-21 20:59:50,872 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 20:59:50,872 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 20:59:50,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:51,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:51,073 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 20:59:51,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 20:59:51,074 INFO L85 PathProgramCache]: Analyzing trace with hash 867863219, now seen corresponding path program 1 times [2023-11-21 20:59:51,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 20:59:51,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142990016] [2023-11-21 20:59:51,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 20:59:51,075 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:51,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 20:59:51,076 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 20:59:51,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 20:59:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 20:59:51,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 20:59:51,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 20:59:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 20:59:52,890 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 20:59:52,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 20:59:52,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142990016] [2023-11-21 20:59:52,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142990016] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 20:59:52,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 20:59:52,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 20:59:52,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605809727] [2023-11-21 20:59:52,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 20:59:52,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 20:59:52,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 20:59:52,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 20:59:52,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 20:59:52,892 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 20:59:53,818 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2023-11-21 20:59:53,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 20:59:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-21 20:59:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 20:59:53,819 INFO L225 Difference]: With dead ends: 15 [2023-11-21 20:59:53,819 INFO L226 Difference]: Without dead ends: 0 [2023-11-21 20:59:53,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-21 20:59:53,821 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 20:59:53,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 23 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 20:59:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-21 20:59:53,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-21 20:59:53,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-21 20:59:53,824 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-11-21 20:59:53,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 20:59:53,824 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-21 20:59:53,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 20:59:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-21 20:59:53,825 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-21 20:59:53,827 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-21 20:59:53,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 20:59:54,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 20:59:54,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-21 20:59:54,323 INFO L899 garLoopResultBuilder]: For program point L118-1(lines 118 122) no Hoare annotation was computed. [2023-11-21 20:59:54,324 INFO L895 garLoopResultBuilder]: At program point L118-2(lines 118 122) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short11#1| (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32))))) [2023-11-21 20:59:54,324 INFO L899 garLoopResultBuilder]: For program point L118-3(lines 118 122) no Hoare annotation was computed. [2023-11-21 20:59:54,324 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 127 148) no Hoare annotation was computed. [2023-11-21 20:59:54,324 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 46) no Hoare annotation was computed. [2023-11-21 20:59:54,325 INFO L899 garLoopResultBuilder]: For program point L136(line 136) no Hoare annotation was computed. [2023-11-21 20:59:54,325 INFO L899 garLoopResultBuilder]: For program point L136-2(lines 136 145) no Hoare annotation was computed. [2023-11-21 20:59:54,325 INFO L899 garLoopResultBuilder]: For program point L136-4(lines 136 145) no Hoare annotation was computed. [2023-11-21 20:59:54,325 INFO L899 garLoopResultBuilder]: For program point L54-1(lines 54 58) no Hoare annotation was computed. [2023-11-21 20:59:54,325 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 54 58) the Hoare annotation is: false [2023-11-21 20:59:54,325 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-21 20:59:54,326 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 38 42) no Hoare annotation was computed. [2023-11-21 20:59:54,326 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 42) the Hoare annotation is: (and (= ((_ to_fp 8 24) currentRoundingMode (_ +zero 11 53)) ~zero_log~0) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start___ieee754_logf_~x#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32)))) (= currentRoundingMode roundNearestTiesToEven) (exists ((currentRoundingMode RoundingMode)) (fp.lt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) currentRoundingMode (_ bv0 32))))) [2023-11-21 20:59:54,326 INFO L899 garLoopResultBuilder]: For program point L38-3(lines 38 42) no Hoare annotation was computed. [2023-11-21 20:59:54,326 INFO L899 garLoopResultBuilder]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2023-11-21 20:59:54,326 INFO L895 garLoopResultBuilder]: At program point L63-2(lines 63 67) the Hoare annotation is: false [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 48) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 142) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 50) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point __ieee754_logf_returnLabel#1(lines 34 110) no Hoare annotation was computed. [2023-11-21 20:59:54,327 INFO L899 garLoopResultBuilder]: For program point L141(lines 141 144) no Hoare annotation was computed. [2023-11-21 20:59:54,328 INFO L899 garLoopResultBuilder]: For program point L51(lines 51 59) no Hoare annotation was computed. [2023-11-21 20:59:54,328 INFO L899 garLoopResultBuilder]: For program point L51-1(lines 51 59) no Hoare annotation was computed. [2023-11-21 20:59:54,328 INFO L899 garLoopResultBuilder]: For program point L142(line 142) no Hoare annotation was computed. [2023-11-21 20:59:54,335 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-21 20:59:54,337 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 20:59:54,350 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated [2023-11-21 20:59:54,351 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-21 20:59:54,352 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-11-21 20:59:54,353 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-11-21 20:59:54,353 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated [2023-11-21 20:59:54,353 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated [2023-11-21 20:59:54,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 08:59:54 BoogieIcfgContainer [2023-11-21 20:59:54,354 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 20:59:54,354 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 20:59:54,355 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 20:59:54,355 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 20:59:54,355 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 08:59:37" (3/4) ... [2023-11-21 20:59:54,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 20:59:54,368 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2023-11-21 20:59:54,369 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-21 20:59:54,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 20:59:54,370 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 20:59:54,481 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 20:59:54,482 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 20:59:54,482 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 20:59:54,483 INFO L158 Benchmark]: Toolchain (without parser) took 32792.80ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 47.2MB in the beginning and 53.3MB in the end (delta: -6.1MB). Peak memory consumption was 16.2MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,483 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:54,483 INFO L158 Benchmark]: CACSL2BoogieTranslator took 451.26ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 33.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,484 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.55ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 33.4MB in the beginning and 69.4MB in the end (delta: -36.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,485 INFO L158 Benchmark]: Boogie Preprocessor took 62.44ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 66.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,485 INFO L158 Benchmark]: RCFGBuilder took 15721.87ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 41.3MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,485 INFO L158 Benchmark]: TraceAbstraction took 16354.52ms. Allocated memory is still 92.3MB. Free memory was 40.5MB in the beginning and 59.1MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 20:59:54,486 INFO L158 Benchmark]: Witness Printer took 127.56ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 53.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 20:59:54,488 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 71.3MB. Free memory is still 46.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 451.26ms. Allocated memory is still 71.3MB. Free memory was 47.0MB in the beginning and 33.4MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.55ms. Allocated memory was 71.3MB in the beginning and 92.3MB in the end (delta: 21.0MB). Free memory was 33.4MB in the beginning and 69.4MB in the end (delta: -36.0MB). Peak memory consumption was 7.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.44ms. Allocated memory is still 92.3MB. Free memory was 69.4MB in the beginning and 66.1MB in the end (delta: 3.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 15721.87ms. Allocated memory is still 92.3MB. Free memory was 66.1MB in the beginning and 41.3MB in the end (delta: 24.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 16354.52ms. Allocated memory is still 92.3MB. Free memory was 40.5MB in the beginning and 59.1MB in the end (delta: -18.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 127.56ms. Allocated memory is still 92.3MB. Free memory was 59.1MB in the beginning and 53.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short11 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression ~roundNearestTiesToEven could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: QuantifierExpression (exists currentRoundingMode : FloatRoundingMode :: ~fp.lt~32(~x~0, ~to_fp~32(currentRoundingMode, 0bv32))) could not be translated * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 142]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 8.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 110 SdHoareTripleChecker+Invalid, 8.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 47 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 63 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 39 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 10 QuantifiedInterpolants, 212 SizeOfPredicates, 13 NumberOfNonLiveVariables, 225 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 118]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2023-11-21 20:59:54,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d95adbf-e810-4dfb-ac3d-b2145e7817de/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE