./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1 --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 1b976e330e4c054879765a8eb6bc4e652ff9f2eb85e78e14695d7ebb374384cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:26:01,517 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:26:01,573 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 06:26:01,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:26:01,578 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:26:01,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:26:01,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:26:01,599 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:26:01,599 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:26:01,599 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:26:01,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:26:01,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:26:01,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:26:01,600 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:26:01,600 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:26:01,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:26:01,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:26:01,601 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:26:01,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:01,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:26:01,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:01,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:26:01,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:26:01,604 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:26:01,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:26:01,604 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1 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 -> 1b976e330e4c054879765a8eb6bc4e652ff9f2eb85e78e14695d7ebb374384cf [2024-12-02 06:26:01,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:26:01,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:26:01,818 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:26:01,819 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:26:01,819 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:26:01,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:04,447 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/abec939c8/6cde5558adb641e895f88845c72da320/FLAG733af6b16 [2024-12-02 06:26:04,626 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:26:04,627 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:04,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/abec939c8/6cde5558adb641e895f88845c72da320/FLAG733af6b16 [2024-12-02 06:26:04,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/abec939c8/6cde5558adb641e895f88845c72da320 [2024-12-02 06:26:04,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:26:04,650 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:26:04,651 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:26:04,651 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:26:04,654 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:26:04,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,656 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42798d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04, skipping insertion in model container [2024-12-02 06:26:04,656 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:26:04,774 WARN L250 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c[670,683] [2024-12-02 06:26:04,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:26:04,786 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:26:04,795 WARN L250 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c[670,683] [2024-12-02 06:26:04,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:26:04,806 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:26:04,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04 WrapperNode [2024-12-02 06:26:04,806 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:26:04,807 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:26:04,807 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:26:04,807 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:26:04,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,818 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,829 INFO L138 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 28 [2024-12-02 06:26:04,829 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:26:04,830 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:26:04,830 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:26:04,830 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:26:04,836 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,837 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,843 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:26:04,843 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,843 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,846 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,848 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,849 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,849 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:26:04,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:26:04,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:26:04,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:26:04,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (1/1) ... [2024-12-02 06:26:04,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:04,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:26:04,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:26:04,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:26:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:26:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:26:04,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:26:04,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 06:26:04,948 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:26:04,950 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:26:05,018 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-12-02 06:26:05,018 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:26:05,026 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:26:05,026 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:26:05,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:05 BoogieIcfgContainer [2024-12-02 06:26:05,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:26:05,029 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:26:05,029 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:26:05,034 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:26:05,034 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:26:04" (1/3) ... [2024-12-02 06:26:05,034 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12185c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:26:05, skipping insertion in model container [2024-12-02 06:26:05,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:04" (2/3) ... [2024-12-02 06:26:05,035 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12185c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:26:05, skipping insertion in model container [2024-12-02 06:26:05,035 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:05" (3/3) ... [2024-12-02 06:26:05,036 INFO L128 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:05,051 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:26:05,052 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Double_div.i.p+cfa-reducer.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 06:26:05,097 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:26:05,109 INFO L333 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, 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;@779507d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:26:05,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:26:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2024-12-02 06:26:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-02 06:26:05,118 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:05,118 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:26:05,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:05,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:05,124 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2024-12-02 06:26:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 06:26:05,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86169051] [2024-12-02 06:26:05,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:05,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 06:26:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:26:05,195 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 06:26:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 06:26:05,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 06:26:05,221 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 06:26:05,222 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 06:26:05,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 06:26:05,228 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 06:26:05,244 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:26:05,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:26:05 BoogieIcfgContainer [2024-12-02 06:26:05,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:26:05,247 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:26:05,248 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:26:05,248 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:26:05,248 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:05" (3/4) ... [2024-12-02 06:26:05,251 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 06:26:05,252 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:26:05,253 INFO L158 Benchmark]: Toolchain (without parser) took 602.45ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 81.8MB in the end (delta: 34.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 06:26:05,253 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:26:05,253 INFO L158 Benchmark]: CACSL2BoogieTranslator took 155.66ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 105.8MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:26:05,253 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.94ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:26:05,254 INFO L158 Benchmark]: Boogie Preprocessor took 20.70ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:26:05,254 INFO L158 Benchmark]: RCFGBuilder took 175.87ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 94.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:26:05,254 INFO L158 Benchmark]: TraceAbstraction took 217.99ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 82.1MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:26:05,255 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 81.8MB in the end (delta: 311.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:26:05,256 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 155.66ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 105.8MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.94ms. Allocated memory is still 142.6MB. Free memory was 105.8MB in the beginning and 104.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.70ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 103.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 175.87ms. Allocated memory is still 142.6MB. Free memory was 103.6MB in the beginning and 94.6MB in the end (delta: 9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 217.99ms. Allocated memory is still 142.6MB. Free memory was 94.0MB in the beginning and 82.1MB in the end (delta: 11.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 81.8MB in the end (delta: 311.3kB). There was no memory consumed. Max. memory is 16.1GB. * 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: 27]: 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 someBinaryArithmeticDOUBLEoperation at line 10, overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] double main__x = 1.0; [L10] double main__x1 = main__x / 2.5; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 06:26:05,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1 --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 1b976e330e4c054879765a8eb6bc4e652ff9f2eb85e78e14695d7ebb374384cf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 06:26:07,205 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 06:26:07,282 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 06:26:07,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 06:26:07,288 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 06:26:07,310 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 06:26:07,311 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 06:26:07,311 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 06:26:07,311 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 06:26:07,312 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 06:26:07,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 06:26:07,312 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 06:26:07,312 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 06:26:07,312 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 06:26:07,312 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 06:26:07,312 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 06:26:07,312 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 06:26:07,313 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 06:26:07,314 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:07,314 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 06:26:07,314 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:07,315 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 06:26:07,315 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1 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 -> 1b976e330e4c054879765a8eb6bc4e652ff9f2eb85e78e14695d7ebb374384cf [2024-12-02 06:26:07,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 06:26:07,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 06:26:07,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 06:26:07,549 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 06:26:07,549 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 06:26:07,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:10,151 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/f95723a32/d398652e40664a31a4efbbbafe06eb94/FLAGa7d8545cf [2024-12-02 06:26:10,367 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 06:26:10,367 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:10,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/f95723a32/d398652e40664a31a4efbbbafe06eb94/FLAGa7d8545cf [2024-12-02 06:26:10,739 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/data/f95723a32/d398652e40664a31a4efbbbafe06eb94 [2024-12-02 06:26:10,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 06:26:10,743 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 06:26:10,744 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 06:26:10,744 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 06:26:10,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 06:26:10,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,749 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c6047a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10, skipping insertion in model container [2024-12-02 06:26:10,750 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 06:26:10,877 WARN L250 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c[670,683] [2024-12-02 06:26:10,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:26:10,890 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 06:26:10,902 WARN L250 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_a05e429b-ab08-4d76-95b5-c23a9ff5d332/sv-benchmarks/c/floats-esbmc-regression/Double_div.i.p+cfa-reducer.c[670,683] [2024-12-02 06:26:10,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 06:26:10,915 INFO L204 MainTranslator]: Completed translation [2024-12-02 06:26:10,915 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10 WrapperNode [2024-12-02 06:26:10,916 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 06:26:10,916 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 06:26:10,917 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 06:26:10,917 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 06:26:10,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,930 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,941 INFO L138 Inliner]: procedures = 13, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 29 [2024-12-02 06:26:10,942 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 06:26:10,942 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 06:26:10,942 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 06:26:10,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 06:26:10,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,950 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,958 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 06:26:10,958 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,958 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,964 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,965 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,970 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 06:26:10,971 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 06:26:10,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 06:26:10,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 06:26:10,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (1/1) ... [2024-12-02 06:26:10,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 06:26:10,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 06:26:10,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 06:26:10,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 06:26:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 06:26:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 06:26:11,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 06:26:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 06:26:11,062 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 06:26:11,064 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 06:26:11,850 INFO L? ?]: Removed 7 outVars from TransFormulas that were not future-live. [2024-12-02 06:26:11,850 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 06:26:11,857 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 06:26:11,857 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 06:26:11,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:11 BoogieIcfgContainer [2024-12-02 06:26:11,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 06:26:11,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 06:26:11,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 06:26:11,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 06:26:11,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:26:10" (1/3) ... [2024-12-02 06:26:11,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6eea23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:26:11, skipping insertion in model container [2024-12-02 06:26:11,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:26:10" (2/3) ... [2024-12-02 06:26:11,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6eea23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:26:11, skipping insertion in model container [2024-12-02 06:26:11,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:11" (3/3) ... [2024-12-02 06:26:11,867 INFO L128 eAbstractionObserver]: Analyzing ICFG Double_div.i.p+cfa-reducer.c [2024-12-02 06:26:11,882 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 06:26:11,883 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Double_div.i.p+cfa-reducer.c that has 1 procedures, 9 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-12-02 06:26:11,924 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 06:26:11,933 INFO L333 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, 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;@5bd557b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 06:26:11,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 06:26:11,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) [2024-12-02 06:26:11,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-12-02 06:26:11,939 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:11,939 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-12-02 06:26:11,940 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:11,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:11,943 INFO L85 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2024-12-02 06:26:11,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:26:11,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401312514] [2024-12-02 06:26:11,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:11,951 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 [2024-12-02 06:26:11,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:26:11,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:26:11,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:26:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:12,150 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 06:26:12,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:26:13,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:26:13,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 06:26:13,336 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:26:13,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401312514] [2024-12-02 06:26:13,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401312514] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 06:26:13,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 06:26:13,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 06:26:13,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132240530] [2024-12-02 06:26:13,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 06:26:13,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 06:26:13,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:26:13,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 06:26:13,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 06:26:13,356 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 8 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-12-02 06:26:16,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:26:16,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:26:16,689 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2024-12-02 06:26:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 06:26:16,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-12-02 06:26:16,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:26:16,708 INFO L225 Difference]: With dead ends: 16 [2024-12-02 06:26:16,708 INFO L226 Difference]: Without dead ends: 7 [2024-12-02 06:26:16,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 06:26:16,712 INFO L435 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:26:16,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 06:26:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2024-12-02 06:26:16,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2024-12-02 06:26:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2024-12-02 06:26:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2024-12-02 06:26:16,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2024-12-02 06:26:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:26:16,731 INFO L471 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2024-12-02 06:26:16,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 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) [2024-12-02 06:26:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2024-12-02 06:26:16,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 06:26:16,732 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:26:16,732 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 06:26:16,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 06:26:16,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:26:16,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:26:16,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:26:16,933 INFO L85 PathProgramCache]: Analyzing trace with hash 889537510, now seen corresponding path program 1 times [2024-12-02 06:26:16,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:26:16,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1637684794] [2024-12-02 06:26:16,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 06:26:16,934 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 [2024-12-02 06:26:16,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:26:16,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:26:16,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:26:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 06:26:17,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 06:26:17,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:26:19,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:26:19,062 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:26:35,915 WARN L286 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:26:37,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 06:26:37,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:26:37,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1637684794] [2024-12-02 06:26:37,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1637684794] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:26:37,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:26:37,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-12-02 06:26:37,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843464436] [2024-12-02 06:26:37,475 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:26:37,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 06:26:37,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:26:37,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 06:26:37,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=26, Unknown=1, NotChecked=0, Total=42 [2024-12-02 06:26:37,476 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2024-12-02 06:26:51,671 WARN L286 SmtUtils]: Spent 7.36s on a formula simplification that was a NOOP. DAG size: 13 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:26:55,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:27:00,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:27:01,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:27:01,454 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2024-12-02 06:27:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 06:27:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 6 [2024-12-02 06:27:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:27:01,476 INFO L225 Difference]: With dead ends: 13 [2024-12-02 06:27:01,476 INFO L226 Difference]: Without dead ends: 10 [2024-12-02 06:27:01,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 28.6s TimeCoverageRelationStatistics Valid=41, Invalid=68, Unknown=1, NotChecked=0, Total=110 [2024-12-02 06:27:01,477 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-12-02 06:27:01,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 2 Unknown, 0 Unchecked, 12.3s Time] [2024-12-02 06:27:01,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2024-12-02 06:27:01,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2024-12-02 06:27:01,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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) [2024-12-02 06:27:01,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2024-12-02 06:27:01,480 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2024-12-02 06:27:01,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:27:01,480 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2024-12-02 06:27:01,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2024-12-02 06:27:01,480 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2024-12-02 06:27:01,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-02 06:27:01,481 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:27:01,481 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2024-12-02 06:27:01,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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)] Ended with exit code 0 [2024-12-02 06:27:01,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:27:01,682 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:27:01,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:27:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 201697478, now seen corresponding path program 2 times [2024-12-02 06:27:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:27:01,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [567803612] [2024-12-02 06:27:01,683 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 06:27:01,683 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 [2024-12-02 06:27:01,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:27:01,684 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:27:01,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:27:02,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 06:27:02,397 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:27:02,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 06:27:02,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:27:14,390 WARN L873 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-12-02 06:27:22,926 WARN L286 SmtUtils]: Spent 8.52s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:27:27,066 WARN L873 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-12-02 06:27:36,086 WARN L286 SmtUtils]: Spent 8.56s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:27:40,234 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|) (= |c_ULTIMATE.start_main_~main__x~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:27:40,261 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2024-12-02 06:27:40,261 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:28:06,497 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:28:14,658 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:28:22,879 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:28:26,938 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2024-12-02 06:28:30,996 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2024-12-02 06:28:39,293 WARN L286 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:28:47,658 WARN L286 SmtUtils]: Spent 8.36s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:28:51,747 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from false [2024-12-02 06:28:55,837 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))))) is different from true [2024-12-02 06:29:01,419 WARN L286 SmtUtils]: Spent 5.58s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:29:09,845 WARN L286 SmtUtils]: Spent 8.43s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:29:13,961 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2024-12-02 06:29:18,081 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2024-12-02 06:29:26,726 WARN L286 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:29:35,365 WARN L286 SmtUtils]: Spent 8.64s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:29:39,551 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2024-12-02 06:29:43,722 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2024-12-02 06:29:43,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2024-12-02 06:29:43,722 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:29:43,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [567803612] [2024-12-02 06:29:43,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [567803612] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:29:43,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:29:43,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2024-12-02 06:29:43,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119583212] [2024-12-02 06:29:43,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:29:43,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 06:29:43,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:29:43,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 06:29:43,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=40, Unknown=13, NotChecked=126, Total=210 [2024-12-02 06:29:43,725 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:29:47,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 06:29:52,002 WARN L873 $PredicateComparison]: unable to prove that (and (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-12-02 06:29:56,153 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= |c_ULTIMATE.start_main_~main__x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:30:00,224 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2024-12-02 06:30:04,312 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:30:08,686 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:30:31,750 WARN L286 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 21 DAG size of output: 14 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-12-02 06:30:34,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:39,067 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|) (= |c_ULTIMATE.start_main_~main__x~0#1| (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) |c_ULTIMATE.start_main_~main__x1~0#1|))) (or (not (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:30:40,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:44,644 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:49,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:50,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:54,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:30:58,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:31:02,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 06:31:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:31:02,644 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2024-12-02 06:31:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 06:31:02,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-12-02 06:31:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:31:02,645 INFO L225 Difference]: With dead ends: 16 [2024-12-02 06:31:02,645 INFO L226 Difference]: Without dead ends: 12 [2024-12-02 06:31:02,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 120.6s TimeCoverageRelationStatistics Valid=45, Invalid=54, Unknown=21, NotChecked=300, Total=420 [2024-12-02 06:31:02,646 INFO L435 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 115 IncrementalHoareTripleChecker+Unchecked, 30.0s IncrementalHoareTripleChecker+Time [2024-12-02 06:31:02,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 15 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 5 Unknown, 115 Unchecked, 30.0s Time] [2024-12-02 06:31:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2024-12-02 06:31:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2024-12-02 06:31:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 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) [2024-12-02 06:31:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2024-12-02 06:31:02,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2024-12-02 06:31:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:31:02,649 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2024-12-02 06:31:02,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 06:31:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2024-12-02 06:31:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 06:31:02,649 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 06:31:02,649 INFO L218 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1] [2024-12-02 06:31:02,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:31:02,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:31:02,850 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 06:31:02,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 06:31:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 555748550, now seen corresponding path program 3 times [2024-12-02 06:31:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 06:31:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287013545] [2024-12-02 06:31:02,851 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 06:31:02,851 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 [2024-12-02 06:31:02,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 06:31:02,852 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 06:31:02,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:31:03,621 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 06:31:03,621 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 06:31:03,644 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 06:31:03,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 06:31:16,810 WARN L286 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:31:24,987 WARN L286 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:31:33,696 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_17| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (= |c_ULTIMATE.start_main_~main__x~0#1| .cse0)))) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2024-12-02 06:31:46,033 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:06,999 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:15,188 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:23,374 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:27,485 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (= (_ bv1 32) |c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse2))) (and (fp.eq .cse0 .cse1) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_17|)))))) (and (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse2))) (and (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse2) .cse3) (not (fp.eq .cse3 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (not (fp.eq .cse3 .cse1))))) (= (_ bv0 32) |c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|)))) is different from false [2024-12-02 06:32:39,709 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:45,610 WARN L286 SmtUtils]: Spent 5.90s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:53,798 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:32:57,848 WARN L851 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from false [2024-12-02 06:33:01,885 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse1))) (and (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (not (fp.eq .cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))))))) is different from true [2024-12-02 06:33:01,885 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 6 not checked. [2024-12-02 06:33:01,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 06:33:19,550 WARN L286 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:33:25,588 WARN L873 $PredicateComparison]: unable to prove that (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) is different from true [2024-12-02 06:33:30,752 WARN L286 SmtUtils]: Spent 5.16s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:33:38,917 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:33:47,142 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:33:51,185 WARN L851 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from false [2024-12-02 06:33:55,251 WARN L873 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) is different from true [2024-12-02 06:34:03,300 WARN L286 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:11,458 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:19,686 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:27,020 WARN L286 SmtUtils]: Spent 7.33s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:35,178 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:43,407 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:51,646 WARN L286 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:34:59,812 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:08,036 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:20,545 WARN L286 SmtUtils]: Spent 8.16s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:28,771 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:37,006 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 6 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:45,172 WARN L286 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:53,402 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-12-02 06:35:53,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 11 not checked. [2024-12-02 06:35:53,403 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 06:35:53,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287013545] [2024-12-02 06:35:53,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287013545] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 06:35:53,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 06:35:53,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2024-12-02 06:35:53,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575634230] [2024-12-02 06:35:53,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 06:35:53,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 06:35:53,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 06:35:53,404 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 06:35:53,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=8, NotChecked=60, Total=110 [2024-12-02 06:35:53,405 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2024-12-02 06:35:54,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 06:35:58,608 WARN L851 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-12-02 06:36:02,675 WARN L873 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-12-02 06:36:07,119 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse2 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse1) .cse2)) (fp.eq .cse2 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2024-12-02 06:36:11,216 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse2 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse2 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse1) .cse2)) (fp.eq .cse2 .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:36:15,648 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse2 (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|)) .cse2) (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_17| .cse1))) (and (not (fp.eq .cse3 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (= |c_ULTIMATE.start_main_~main__x~0#1| .cse3)))) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse4 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse1) .cse4)) (fp.eq .cse4 .cse0)))) (or (not .cse2) (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2024-12-02 06:36:19,737 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 5.0 2.0))) (.cse2 (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| |c_ULTIMATE.start_main_~main__x~0#1|)) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (or (fp.eq |c_ULTIMATE.start_main_~main__x1~0#1| .cse0) (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x1~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|)) .cse2) (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_17| .cse1))) (and (not (fp.eq .cse3 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (= |c_ULTIMATE.start_main_~main__x~0#1| .cse3)))) (= (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~main__x~0#1| .cse1) |c_ULTIMATE.start_main_~main__x1~0#1|) (forall ((|v_ULTIMATE.start_main_~main__x~0#1_20| (_ FloatingPoint 11 53))) (let ((.cse4 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~main__x~0#1_20| .cse1))) (or (fp.eq .cse4 |v_ULTIMATE.start_main_~main__x~0#1_20|) (not (fp.eq (fp.div c_currentRoundingMode .cse4 .cse1) .cse4)) (fp.eq .cse4 .cse0)))) (or (not .cse2) (fp.eq |c_ULTIMATE.start_main_~main__x~0#1| .cse0)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2024-12-02 06:36:23,767 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (= (_ bv0 32) |c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|))) (and (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (= (_ bv1 32) |c_ULTIMATE.start_main_~__VERIFIER_assert__cond~0#1|) (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse2))) (and (fp.eq .cse0 .cse1) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~main__x~0#1_17|)))))) (and (exists ((|v_ULTIMATE.start_main_~main__x~0#1_17| (_ FloatingPoint 11 53))) (let ((.cse3 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~main__x~0#1_17| .cse2))) (and (fp.eq (fp.div roundNearestTiesToEven .cse3 .cse2) .cse3) (not (fp.eq .cse3 |v_ULTIMATE.start_main_~main__x~0#1_17|)) (not (fp.eq .cse3 .cse1))))) .cse4))) (not .cse4))) is different from false [2024-12-02 06:36:23,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 06:36:23,799 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2024-12-02 06:36:23,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 06:36:23,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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 11 [2024-12-02 06:36:23,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 06:36:23,800 INFO L225 Difference]: With dead ends: 12 [2024-12-02 06:36:23,800 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 06:36:23,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 68.0s TimeCoverageRelationStatistics Valid=28, Invalid=23, Unknown=15, NotChecked=144, Total=210 [2024-12-02 06:36:23,801 INFO L435 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 06:36:23,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 33 Unchecked, 1.2s Time] [2024-12-02 06:36:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 06:36:23,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 06:36:23,802 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) [2024-12-02 06:36:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 06:36:23,802 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2024-12-02 06:36:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 06:36:23,803 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 06:36:23,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 10 states have internal predecessors, (16), 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) [2024-12-02 06:36:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 06:36:23,803 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 06:36:23,806 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-12-02 06:36:23,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:36:24,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 06:36:24,009 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1] [2024-12-02 06:36:24,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 06:36:24,013 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 06:36:24,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 06:36:24 BoogieIcfgContainer [2024-12-02 06:36:24,017 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 06:36:24,017 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 06:36:24,017 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 06:36:24,018 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 06:36:24,018 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:26:11" (3/4) ... [2024-12-02 06:36:24,019 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 06:36:24,024 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-12-02 06:36:24,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-12-02 06:36:24,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 06:36:24,025 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 06:36:24,072 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 06:36:24,073 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 06:36:24,073 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 06:36:24,073 INFO L158 Benchmark]: Toolchain (without parser) took 613330.85ms. Allocated memory is still 92.3MB. Free memory was 70.9MB in the beginning and 44.2MB in the end (delta: 26.6MB). Peak memory consumption was 21.2MB. Max. memory is 16.1GB. [2024-12-02 06:36:24,073 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.13ms. Allocated memory is still 92.3MB. Free memory was 70.6MB in the beginning and 59.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.27ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 58.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: Boogie Preprocessor took 27.77ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 57.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: RCFGBuilder took 887.09ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 48.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: TraceAbstraction took 612157.30ms. Allocated memory is still 92.3MB. Free memory was 47.5MB in the beginning and 48.2MB in the end (delta: -691.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:36:24,074 INFO L158 Benchmark]: Witness Printer took 55.24ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 44.2MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 06:36:24,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 48.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.13ms. Allocated memory is still 92.3MB. Free memory was 70.6MB in the beginning and 59.6MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.27ms. Allocated memory is still 92.3MB. Free memory was 59.5MB in the beginning and 58.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.77ms. Allocated memory is still 92.3MB. Free memory was 58.4MB in the beginning and 57.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 887.09ms. Allocated memory is still 92.3MB. Free memory was 57.0MB in the beginning and 48.2MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 612157.30ms. Allocated memory is still 92.3MB. Free memory was 47.5MB in the beginning and 48.2MB in the end (delta: -691.9kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 55.24ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 44.2MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * 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: 27]: 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, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 612.1s, OverallIterations: 4, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 136.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 45.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 45.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 148 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 13 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 21 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 219.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 27, 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 472.5s InterpolantComputationTime, 31 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 9 QuantifiedInterpolants, 885 SizeOfPredicates, 9 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 25/64 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 06:36:24,283 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2024-12-02 06:36:24,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a05e429b-ab08-4d76-95b5-c23a9ff5d332/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE