./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.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_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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_585d348d-f9ea-499d-bea8-b52f435fd755/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 e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:38,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:38,249 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:01:38,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:38,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:38,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:38,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:38,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:38,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:38,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:38,291 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:38,291 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:38,292 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:38,292 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:38,293 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:38,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:38,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:38,294 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:38,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:01:38,295 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:38,297 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:38,298 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:38,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:38,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:38,299 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:38,299 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:38,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:38,300 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:38,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:38,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:38,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:38,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:38,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:38,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:38,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:38,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:38,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:01:38,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:01:38,304 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:38,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:38,305 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:38,305 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:38,306 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_585d348d-f9ea-499d-bea8-b52f435fd755/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f [2024-10-31 22:01:38,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:38,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:38,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:38,623 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:38,623 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:38,625 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c Unable to find full path for "g++" [2024-10-31 22:01:40,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:40,963 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:40,964 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2024-10-31 22:01:40,977 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/29bf03e48/4e92680be53b40bb83c1cf8d9d333825/FLAG2ed843bec [2024-10-31 22:01:41,001 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/29bf03e48/4e92680be53b40bb83c1cf8d9d333825 [2024-10-31 22:01:41,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:41,006 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:41,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:41,008 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:41,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:41,017 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,019 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeed5c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41, skipping insertion in model container [2024-10-31 22:01:41,020 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,055 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:41,301 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_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c[3212,3225] [2024-10-31 22:01:41,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:41,317 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:41,372 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_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c[3212,3225] [2024-10-31 22:01:41,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:41,396 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:41,397 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41 WrapperNode [2024-10-31 22:01:41,397 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:41,399 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:41,399 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:41,399 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:41,407 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,417 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,459 INFO L138 Inliner]: procedures = 18, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 176 [2024-10-31 22:01:41,460 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:41,461 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:41,461 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:41,461 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:41,473 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,473 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,476 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,502 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-10-31 22:01:41,503 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,503 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,522 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,524 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:41,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:41,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:41,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:41,532 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (1/1) ... [2024-10-31 22:01:41,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:41,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:41,562 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:41,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:41,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:01:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:01:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:01:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:01:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:01:41,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-31 22:01:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-31 22:01:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-31 22:01:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-31 22:01:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:01:41,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-10-31 22:01:41,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-10-31 22:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:01:41,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:01:41,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:41,707 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:41,709 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:01:42,057 INFO L? ?]: Removed 35 outVars from TransFormulas that were not future-live. [2024-10-31 22:01:42,057 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:01:42,071 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:01:42,071 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:01:42,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:42 BoogieIcfgContainer [2024-10-31 22:01:42,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:01:42,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:01:42,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:01:42,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:01:42,078 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:41" (1/3) ... [2024-10-31 22:01:42,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e524e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:42, skipping insertion in model container [2024-10-31 22:01:42,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:41" (2/3) ... [2024-10-31 22:01:42,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e524e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:01:42, skipping insertion in model container [2024-10-31 22:01:42,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:42" (3/3) ... [2024-10-31 22:01:42,081 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2024-10-31 22:01:42,099 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:01:42,099 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:01:42,165 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:01:42,172 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;@76f2be7a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:01:42,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:01:42,176 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 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 22:01:42,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 22:01:42,181 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:42,182 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:42,182 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:42,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:42,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1902379920, now seen corresponding path program 1 times [2024-10-31 22:01:42,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:42,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758616255] [2024-10-31 22:01:42,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:42,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:01:42,380 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 22:01:42,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:01:42,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758616255] [2024-10-31 22:01:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758616255] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:01:42,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:01:42,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:01:42,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8901909] [2024-10-31 22:01:42,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:01:42,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:01:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:01:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:01:42,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:01:42,416 INFO L87 Difference]: Start difference. First operand has 46 states, 44 states have (on average 1.6363636363636365) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:42,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:01:42,434 INFO L93 Difference]: Finished difference Result 90 states and 142 transitions. [2024-10-31 22:01:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:01:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-31 22:01:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:01:42,447 INFO L225 Difference]: With dead ends: 90 [2024-10-31 22:01:42,447 INFO L226 Difference]: Without dead ends: 43 [2024-10-31 22:01:42,450 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:01:42,454 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:01:42,455 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:01:42,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-31 22:01:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2024-10-31 22:01:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.4523809523809523) internal successors, (61), 42 states have internal predecessors, (61), 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 22:01:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 61 transitions. [2024-10-31 22:01:42,493 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 61 transitions. Word has length 9 [2024-10-31 22:01:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:01:42,493 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 61 transitions. [2024-10-31 22:01:42,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:01:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 61 transitions. [2024-10-31 22:01:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:01:42,495 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:01:42,495 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:01:42,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:01:42,495 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:01:42,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:01:42,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1485970893, now seen corresponding path program 1 times [2024-10-31 22:01:42,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:01:42,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941580084] [2024-10-31 22:01:42,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:01:42,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:01:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:42,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:01:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:01:42,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:01:42,650 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:01:42,652 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-31 22:01:42,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:01:42,658 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:01:42,680 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:01:42,686 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:01:42 BoogieIcfgContainer [2024-10-31 22:01:42,686 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:01:42,687 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:01:42,687 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:01:42,687 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:01:42,688 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:01:42" (3/4) ... [2024-10-31 22:01:42,691 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:01:42,692 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:01:42,693 INFO L158 Benchmark]: Toolchain (without parser) took 1687.61ms. Allocated memory is still 167.8MB. Free memory was 130.0MB in the beginning and 106.7MB in the end (delta: 23.2MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,694 INFO L158 Benchmark]: CDTParser took 4.24ms. Allocated memory is still 115.3MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:01:42,695 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.41ms. Allocated memory is still 167.8MB. Free memory was 130.0MB in the beginning and 115.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,695 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.50ms. Allocated memory is still 167.8MB. Free memory was 115.7MB in the beginning and 113.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,696 INFO L158 Benchmark]: Boogie Preprocessor took 69.70ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 110.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,696 INFO L158 Benchmark]: RCFGBuilder took 540.85ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 136.1MB in the end (delta: -25.7MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,697 INFO L158 Benchmark]: TraceAbstraction took 612.18ms. Allocated memory is still 167.8MB. Free memory was 135.2MB in the beginning and 107.0MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-10-31 22:01:42,697 INFO L158 Benchmark]: Witness Printer took 5.86ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 106.7MB in the end (delta: 263.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:01:42,704 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 4.24ms. Allocated memory is still 115.3MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 29.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.41ms. Allocated memory is still 167.8MB. Free memory was 130.0MB in the beginning and 115.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.50ms. Allocated memory is still 167.8MB. Free memory was 115.7MB in the beginning and 113.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.70ms. Allocated memory is still 167.8MB. Free memory was 113.2MB in the beginning and 110.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 540.85ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 136.1MB in the end (delta: -25.7MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * TraceAbstraction took 612.18ms. Allocated memory is still 167.8MB. Free memory was 135.2MB in the beginning and 107.0MB in the end (delta: 28.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 5.86ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 106.7MB in the end (delta: 263.3kB). 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: 126]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 113, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L26-L30] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L32] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L121] float x = 0.0f / 0.0f; [L122] CALL, EXPR __ieee754_logf(x) [L35] float hfsq, f, s, z, R, w, t1, t2, dk; [L36] __int32_t k, ix, i, j; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554442, zero_log=0] [L39] ieee_float_shape_type gf_u; [L40] gf_u.value = (x) [L41] EXPR gf_u.word [L41] (ix) = gf_u.word [L44] k = 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ix=0, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554442, zero_log=0] [L45] COND TRUE ((ix & 0x7fffffff) == 0) [L46] return -two25_log / zero_log; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, k=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=33554442, zero_log=0] [L122] RET, EXPR __ieee754_logf(x) [L122] float res = __ieee754_logf(x); [L125] CALL, EXPR isnan_float(res) [L113] return x != x; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, \result=0, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L125] RET, EXPR isnan_float(res) [L125] COND TRUE !isnan_float(res) [L126] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 64 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-31 22:01:42,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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_585d348d-f9ea-499d-bea8-b52f435fd755/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 e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:01:45,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:01:45,361 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 22:01:45,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:01:45,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:01:45,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:01:45,416 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:01:45,416 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:01:45,417 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:01:45,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:01:45,418 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:01:45,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:01:45,421 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:01:45,423 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:01:45,424 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:01:45,424 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:01:45,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:01:45,425 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:01:45,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:01:45,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:01:45,426 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:01:45,430 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:01:45,431 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:01:45,431 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:01:45,431 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:01:45,431 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:01:45,432 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:01:45,432 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:01:45,432 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:01:45,433 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:01:45,434 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:01:45,434 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:01:45,434 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:01:45,434 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:01:45,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:45,435 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:01:45,435 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:01:45,436 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:01:45,436 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:01:45,436 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:01:45,437 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:01:45,438 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:01:45,439 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:01:45,440 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:01:45,441 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:01:45,441 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_585d348d-f9ea-499d-bea8-b52f435fd755/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e738debe116f53547f4d856a26a196b1ac73097502894c4fa34f78b8e888418f [2024-10-31 22:01:45,863 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:01:45,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:01:45,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:01:45,895 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:01:45,895 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:01:45,898 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/float-newlib/float_req_bl_0921.c Unable to find full path for "g++" [2024-10-31 22:01:48,145 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:01:48,444 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:01:48,444 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c [2024-10-31 22:01:48,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/d302b3b5a/a9455021cf264bc9b68f25fce4f1bba7/FLAG84c096508 [2024-10-31 22:01:48,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/data/d302b3b5a/a9455021cf264bc9b68f25fce4f1bba7 [2024-10-31 22:01:48,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:01:48,754 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:01:48,755 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:48,756 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:01:48,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:01:48,765 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:48" (1/1) ... [2024-10-31 22:01:48,766 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7c86b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:48, skipping insertion in model container [2024-10-31 22:01:48,766 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:01:48" (1/1) ... [2024-10-31 22:01:48,798 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:01:49,096 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_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c[3212,3225] [2024-10-31 22:01:49,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:49,120 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:01:49,170 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_585d348d-f9ea-499d-bea8-b52f435fd755/sv-benchmarks/c/float-newlib/float_req_bl_0921.c[3212,3225] [2024-10-31 22:01:49,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:01:49,203 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:01:49,203 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49 WrapperNode [2024-10-31 22:01:49,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:01:49,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:49,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:01:49,205 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:01:49,214 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,232 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,271 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 142 [2024-10-31 22:01:49,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:01:49,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:01:49,273 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:01:49,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:01:49,287 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,287 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,292 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,307 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-10-31 22:01:49,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,328 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,332 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:01:49,341 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:01:49,341 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:01:49,341 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:01:49,346 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (1/1) ... [2024-10-31 22:01:49,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:01:49,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:01:49,394 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:01:49,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:01:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:01:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:01:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-10-31 22:01:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:01:49,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:01:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-10-31 22:01:49,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:01:49,622 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:01:49,628 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:02:16,403 INFO L? ?]: Removed 56 outVars from TransFormulas that were not future-live. [2024-10-31 22:02:16,404 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:02:16,435 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:02:16,436 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-10-31 22:02:16,436 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:16 BoogieIcfgContainer [2024-10-31 22:02:16,436 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:02:16,440 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:02:16,441 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:02:16,445 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:02:16,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:01:48" (1/3) ... [2024-10-31 22:02:16,449 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:16, skipping insertion in model container [2024-10-31 22:02:16,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:01:49" (2/3) ... [2024-10-31 22:02:16,450 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f1046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:02:16, skipping insertion in model container [2024-10-31 22:02:16,450 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:02:16" (3/3) ... [2024-10-31 22:02:16,452 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_0921.c [2024-10-31 22:02:16,472 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:02:16,473 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:02:16,560 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:02:16,570 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;@1b1cca0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:02:16,571 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-31 22:02:16,576 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 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 22:02:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-31 22:02:16,584 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:16,587 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:16,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:02:16,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:16,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1904103824, now seen corresponding path program 1 times [2024-10-31 22:02:16,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:02:16,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574849582] [2024-10-31 22:02:16,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:16,632 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 22:02:16,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:02:16,636 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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 22:02:16,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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 22:02:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:17,241 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:02:17,245 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:17,266 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 22:02:17,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:17,267 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:02:17,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574849582] [2024-10-31 22:02:17,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574849582] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:17,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:17,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:02:17,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70144905] [2024-10-31 22:02:17,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:17,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:02:17,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:02:17,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:02:17,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:17,300 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 29 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:02:17,316 INFO L93 Difference]: Finished difference Result 58 states and 92 transitions. [2024-10-31 22:02:17,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:02:17,318 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-31 22:02:17,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:02:17,325 INFO L225 Difference]: With dead ends: 58 [2024-10-31 22:02:17,325 INFO L226 Difference]: Without dead ends: 27 [2024-10-31 22:02:17,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:02:17,332 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-31 22:02:17,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:02:17,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-31 22:02:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-31 22:02:17,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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 22:02:17,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2024-10-31 22:02:17,371 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 9 [2024-10-31 22:02:17,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:02:17,372 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2024-10-31 22:02:17,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:02:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2024-10-31 22:02:17,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-31 22:02:17,375 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:02:17,376 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:02:17,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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)] Forceful destruction successful, exit code 0 [2024-10-31 22:02:17,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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 [2024-10-31 22:02:17,577 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:02:17,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:02:17,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1484246989, now seen corresponding path program 1 times [2024-10-31 22:02:17,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:02:17,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211220970] [2024-10-31 22:02:17,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:02:17,580 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 22:02:17,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:02:17,583 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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 22:02:17,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_585d348d-f9ea-499d-bea8-b52f435fd755/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 (3)] Waiting until timeout for monitored process [2024-10-31 22:02:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:02:18,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-10-31 22:02:18,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:02:18,422 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 22:02:18,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:02:18,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:02:18,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211220970] [2024-10-31 22:02:18,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211220970] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:02:18,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:02:18,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:02:18,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004584453] [2024-10-31 22:02:18,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:02:18,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:02:18,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:02:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:02:18,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:02:18,429 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 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)