./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_iterated.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU --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 1b2a34283d37096850c6fa7d7933fe07674b3fa81a7da8c770f866e152d89627 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:51,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:51,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:10:51,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:51,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:51,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:51,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:51,913 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:51,913 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:51,914 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:51,915 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:51,915 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:51,916 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:51,916 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:51,917 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:51,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:51,918 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:51,918 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:51,919 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:51,919 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:51,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:51,920 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:51,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:51,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:51,922 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:51,922 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:51,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:51,923 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:51,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:51,924 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:51,924 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:51,924 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:51,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:51,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:51,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:51,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:51,926 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:51,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:51,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:51,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:51,928 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:51,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:51,929 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2a34283d37096850c6fa7d7933fe07674b3fa81a7da8c770f866e152d89627 [2024-10-31 22:10:52,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:52,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:52,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:52,250 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:52,252 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:52,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/float-benchs/filter2_iterated.c Unable to find full path for "g++" [2024-10-31 22:10:54,387 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:54,603 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:54,603 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c [2024-10-31 22:10:54,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/319e66c8f/29df0eb2a2bc43388bc84f6c7c9e3e22/FLAG19b9a3711 [2024-10-31 22:10:54,624 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/319e66c8f/29df0eb2a2bc43388bc84f6c7c9e3e22 [2024-10-31 22:10:54,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:54,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:54,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:54,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:54,638 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:54,639 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:54,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a40e131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54, skipping insertion in model container [2024-10-31 22:10:54,640 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:54,662 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:54,841 WARN L251 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_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c[447,460] [2024-10-31 22:10:54,873 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:54,885 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:54,898 WARN L251 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_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c[447,460] [2024-10-31 22:10:54,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:54,950 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:54,951 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54 WrapperNode [2024-10-31 22:10:54,951 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:54,953 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:54,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:54,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:54,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:54,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,009 INFO L138 Inliner]: procedures = 17, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2024-10-31 22:10:55,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:55,014 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:55,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:55,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:55,032 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,033 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,068 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 9, 10, 9, 11]. 27 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 2, 2, 2, 2]. The 16 writes are split as follows [0, 4, 4, 4, 4]. [2024-10-31 22:10:55,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,093 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,098 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:55,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:55,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:55,109 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:55,110 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (1/1) ... [2024-10-31 22:10:55,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:55,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:55,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:55,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-31 22:10:55,175 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-10-31 22:10:55,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:55,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-31 22:10:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-31 22:10:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-31 22:10:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-31 22:10:55,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-31 22:10:55,309 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:55,311 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:55,493 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 22:10:55,494 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:55,506 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:55,506 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:10:55,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:55 BoogieIcfgContainer [2024-10-31 22:10:55,507 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:55,509 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:55,509 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:55,512 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:55,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:54" (1/3) ... [2024-10-31 22:10:55,513 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb9f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:55, skipping insertion in model container [2024-10-31 22:10:55,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:54" (2/3) ... [2024-10-31 22:10:55,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71fb9f4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:55, skipping insertion in model container [2024-10-31 22:10:55,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:55" (3/3) ... [2024-10-31 22:10:55,515 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_iterated.c [2024-10-31 22:10:55,537 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:55,538 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:10:55,611 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:55,625 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;@4bbd2df9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:55,626 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:10:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:55,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:10:55,640 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:10:55,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:55,641 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:10:55,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 304794067, now seen corresponding path program 1 times [2024-10-31 22:10:55,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:55,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619195363] [2024-10-31 22:10:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:55,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:55,802 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:55,876 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:55,879 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:55,881 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:10:55,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:55,891 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-31 22:10:55,930 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:10:55,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:10:55 BoogieIcfgContainer [2024-10-31 22:10:55,937 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:10:55,938 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:55,941 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:55,941 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:55,942 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:55" (3/4) ... [2024-10-31 22:10:55,945 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:10:55,946 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:55,949 INFO L158 Benchmark]: Toolchain (without parser) took 1319.51ms. Allocated memory is still 144.7MB. Free memory was 112.7MB in the beginning and 63.0MB in the end (delta: 49.8MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,950 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 144.7MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:55,950 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.73ms. Allocated memory is still 144.7MB. Free memory was 112.7MB in the beginning and 99.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,951 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.02ms. Allocated memory is still 144.7MB. Free memory was 99.0MB in the beginning and 97.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,951 INFO L158 Benchmark]: Boogie Preprocessor took 93.61ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 94.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,952 INFO L158 Benchmark]: RCFGBuilder took 398.59ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 80.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,954 INFO L158 Benchmark]: TraceAbstraction took 427.48ms. Allocated memory is still 144.7MB. Free memory was 79.7MB in the beginning and 63.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-31 22:10:55,955 INFO L158 Benchmark]: Witness Printer took 9.06ms. Allocated memory is still 144.7MB. Free memory was 63.3MB in the beginning and 63.0MB in the end (delta: 355.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:55,962 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 144.7MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.73ms. Allocated memory is still 144.7MB. Free memory was 112.7MB in the beginning and 99.0MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.02ms. Allocated memory is still 144.7MB. Free memory was 99.0MB in the beginning and 97.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.61ms. Allocated memory is still 144.7MB. Free memory was 97.2MB in the beginning and 94.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 398.59ms. Allocated memory is still 144.7MB. Free memory was 94.4MB in the beginning and 80.5MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 427.48ms. Allocated memory is still 144.7MB. Free memory was 79.7MB in the beginning and 63.7MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 9.06ms. Allocated memory is still 144.7MB. Free memory was 63.3MB in the beginning and 63.0MB in the end (delta: 355.2kB). 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: 9]: 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 someBinaryDOUBLEComparisonOperation at line 74, overapproximation of to_real at line 58, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62. Possible FailurePath: [L13] BOOLEAN INIT1, INIT2; [L14] float X, P; [L18] static float E[2], S[2]; [L18] static float E[2], S[2]; [L18] static float E[2], S[2]; [L18] static float E[2], S[2]; [L18] static float E[2], S[2]; [L18] static float E[2], S[2]; [L38] static float E2[2], S2[2]; [L38] static float E2[2], S2[2]; [L38] static float E2[2], S2[2]; [L38] static float E2[2], S2[2]; [L38] static float E2[2], S2[2]; [L38] static float E2[2], S2[2]; VAL [E2={6:0}, E={4:0}, INIT1=0, INIT2=0, P=0, S2={7:0}, S={5:0}, X=0] [L58] X = 0 [L59] INIT1 = TRUE [L60] INIT2 = TRUE VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] [L61] COND TRUE \read(TRUE) [L62] X = 0.98*X + 85. VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] [L63] COND FALSE !(X >= -400. && X <= 400.) VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] [L68] COND FALSE !(X >= -800. && X <= 800.) VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] [L74] CALL __VERIFIER_assert(X >= -1155. && X <= 4251.) [L9] COND TRUE !(cond) VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] [L9] reach_error() VAL [E2={6:0}, E={4:0}, INIT1=1, INIT2=1, P=0, S2={7:0}, S={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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=18occurred 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, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-31 22:10:55,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_iterated.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU --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 1b2a34283d37096850c6fa7d7933fe07674b3fa81a7da8c770f866e152d89627 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:58,662 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:58,755 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 22:10:58,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:58,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:58,804 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:58,804 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:58,805 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:58,806 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:58,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:58,807 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:58,808 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:58,808 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:58,809 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:58,809 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:58,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:58,813 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:58,816 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:58,816 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:58,817 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:58,817 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:58,817 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:58,818 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:58,818 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:10:58,819 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:10:58,819 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:58,821 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:10:58,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:58,822 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:58,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:58,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:58,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:58,824 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:58,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:58,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:58,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:58,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:58,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:58,826 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:10:58,826 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:10:58,826 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:58,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:58,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:58,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:58,828 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:10:58,828 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b2a34283d37096850c6fa7d7933fe07674b3fa81a7da8c770f866e152d89627 [2024-10-31 22:10:59,256 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:59,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:59,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:59,293 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:59,294 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:59,295 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/float-benchs/filter2_iterated.c Unable to find full path for "g++" [2024-10-31 22:11:01,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:11:01,803 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:11:01,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c [2024-10-31 22:11:01,814 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/37e3f2ead/35fb18616f494c2fad06b3861d528e0a/FLAG14a62fac9 [2024-10-31 22:11:02,123 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/data/37e3f2ead/35fb18616f494c2fad06b3861d528e0a [2024-10-31 22:11:02,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:11:02,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:11:02,128 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:02,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:11:02,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:11:02,137 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17240228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02, skipping insertion in model container [2024-10-31 22:11:02,138 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,166 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:11:02,389 WARN L251 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_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c[447,460] [2024-10-31 22:11:02,438 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:02,466 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:11:02,478 WARN L251 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_bc5cae40-e7b8-4110-a6e9-fa109e60d273/sv-benchmarks/c/float-benchs/filter2_iterated.c[447,460] [2024-10-31 22:11:02,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:11:02,542 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:11:02,543 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02 WrapperNode [2024-10-31 22:11:02,543 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:11:02,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:02,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:11:02,545 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:11:02,553 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,571 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,610 INFO L138 Inliner]: procedures = 18, calls = 53, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 109 [2024-10-31 22:11:02,610 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:11:02,611 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:11:02,612 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:11:02,612 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:11:02,627 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,627 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,635 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,659 INFO L175 MemorySlicer]: Split 41 memory accesses to 5 slices as follows [2, 9, 10, 9, 11]. 27 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 2, 2, 2, 2]. The 16 writes are split as follows [0, 4, 4, 4, 4]. [2024-10-31 22:11:02,660 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,661 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,684 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,695 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,704 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:11:02,705 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:11:02,705 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:11:02,705 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:11:02,706 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (1/1) ... [2024-10-31 22:11:02,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:11:02,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:11:02,784 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:11:02,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:11:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:11:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2024-10-31 22:11:02,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2024-10-31 22:11:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2024-10-31 22:11:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2024-10-31 22:11:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2024-10-31 22:11:02,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-10-31 22:11:02,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:11:02,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-10-31 22:11:02,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-10-31 22:11:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-10-31 22:11:02,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2024-10-31 22:11:03,081 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:11:03,084 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:11:23,260 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-10-31 22:11:23,260 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:11:23,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:11:23,273 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-31 22:11:23,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:23 BoogieIcfgContainer [2024-10-31 22:11:23,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:11:23,276 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:11:23,276 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:11:23,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:11:23,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:11:02" (1/3) ... [2024-10-31 22:11:23,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c08511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:23, skipping insertion in model container [2024-10-31 22:11:23,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:11:02" (2/3) ... [2024-10-31 22:11:23,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c08511a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:11:23, skipping insertion in model container [2024-10-31 22:11:23,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:11:23" (3/3) ... [2024-10-31 22:11:23,283 INFO L112 eAbstractionObserver]: Analyzing ICFG filter2_iterated.c [2024-10-31 22:11:23,297 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:11:23,297 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:11:23,360 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:11:23,369 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;@663b86b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:11:23,371 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:11:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:23,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-31 22:11:23,383 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:11:23,383 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:11:23,384 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:11:23,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:11:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash 304794067, now seen corresponding path program 1 times [2024-10-31 22:11:23,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:11:23,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287300937] [2024-10-31 22:11:23,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:11:23,439 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 [2024-10-31 22:11:23,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:11:23,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/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) [2024-10-31 22:11:23,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc5cae40-e7b8-4110-a6e9-fa109e60d273/bin/uautomizer-verify-4GaUIPS5ZU/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 [2024-10-31 22:11:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:11:23,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-31 22:11:23,866 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:11:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:11:24,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:11:24,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:11:24,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287300937] [2024-10-31 22:11:24,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287300937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:11:24,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:11:24,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:11:24,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943168236] [2024-10-31 22:11:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:11:24,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:11:24,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:11:24,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:11:24,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:11:24,983 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:11:31,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-31 22:11:35,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []