./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.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_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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_2fcb024b-e4a1-4265-a849-e23d6607929a/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 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:00:16,947 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:00:17,046 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:00:17,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:00:17,054 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:00:17,086 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:00:17,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:00:17,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:00:17,090 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:00:17,092 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:00:17,093 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:00:17,093 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:00:17,094 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:00:17,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:00:17,097 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:00:17,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:00:17,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:00:17,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:00:17,099 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:00:17,099 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:00:17,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:00:17,100 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:00:17,100 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:00:17,100 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:00:17,101 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:00:17,101 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:00:17,101 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:00:17,101 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:00:17,102 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:00:17,102 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:00:17,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:00:17,103 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:00:17,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:17,106 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:00:17,107 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:00:17,107 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:00:17,107 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:00:17,108 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:00:17,109 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:00:17,109 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:00:17,109 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:00:17,110 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:00:17,110 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_2fcb024b-e4a1-4265-a849-e23d6607929a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 [2024-10-31 22:00:17,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:00:17,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:00:17,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:00:17,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:00:17,516 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:00:17,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-10-31 22:00:20,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:20,287 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:20,291 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2024-10-31 22:00:20,307 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/49dee36ae/642ca1a341d64435a6723b866e459855/FLAG4fd0215be [2024-10-31 22:00:20,636 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/49dee36ae/642ca1a341d64435a6723b866e459855 [2024-10-31 22:00:20,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:20,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:20,646 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:20,648 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:20,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:20,656 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:20" (1/1) ... [2024-10-31 22:00:20,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42b33707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:20, skipping insertion in model container [2024-10-31 22:00:20,658 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:20" (1/1) ... [2024-10-31 22:00:20,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:20,921 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-31 22:00:20,929 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-31 22:00:21,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:21,045 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:21,065 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-31 22:00:21,069 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-31 22:00:21,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:21,162 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:21,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21 WrapperNode [2024-10-31 22:00:21,163 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:21,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:21,164 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:21,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:21,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,229 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2024-10-31 22:00:21,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:21,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:21,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:21,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:21,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,250 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,266 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:00:21,266 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,267 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,273 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,278 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,291 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:21,295 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:21,299 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:21,299 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:21,300 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (1/1) ... [2024-10-31 22:00:21,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:21,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:21,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:21,395 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-31 22:00:21,395 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-31 22:00:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:00:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 22:00:21,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 22:00:21,513 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:21,518 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:22,065 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2024-10-31 22:00:22,065 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:22,087 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:22,087 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:00:22,088 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:22 BoogieIcfgContainer [2024-10-31 22:00:22,088 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:22,091 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:22,091 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:22,099 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:22,099 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:20" (1/3) ... [2024-10-31 22:00:22,100 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c801b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:22, skipping insertion in model container [2024-10-31 22:00:22,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:21" (2/3) ... [2024-10-31 22:00:22,101 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c801b05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:22, skipping insertion in model container [2024-10-31 22:00:22,101 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:22" (3/3) ... [2024-10-31 22:00:22,106 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_1-2a.c.cil.c [2024-10-31 22:00:22,122 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:22,122 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:00:22,222 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:22,228 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;@523f7633, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:22,229 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:00:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand has 105 states, 92 states have (on average 1.576086956521739) internal successors, (145), 96 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-31 22:00:22,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:00:22,265 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:22,266 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:22,267 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:00:22,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:22,276 INFO L85 PathProgramCache]: Analyzing trace with hash 904226015, now seen corresponding path program 1 times [2024-10-31 22:00:22,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:22,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093043550] [2024-10-31 22:00:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:22,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:22,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:22,435 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 22:00:22,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:00:22,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093043550] [2024-10-31 22:00:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093043550] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:22,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:22,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308475152] [2024-10-31 22:00:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:22,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:00:22,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:00:22,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:00:22,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:00:22,472 INFO L87 Difference]: Start difference. First operand has 105 states, 92 states have (on average 1.576086956521739) internal successors, (145), 96 states have internal predecessors, (145), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:22,504 INFO L93 Difference]: Finished difference Result 205 states and 322 transitions. [2024-10-31 22:00:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:00:22,506 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:00:22,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:22,514 INFO L225 Difference]: With dead ends: 205 [2024-10-31 22:00:22,514 INFO L226 Difference]: Without dead ends: 98 [2024-10-31 22:00:22,517 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 22:00:22,521 INFO L432 NwaCegarLoop]: 151 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, 151 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 22:00:22,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:00:22,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-31 22:00:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2024-10-31 22:00:22,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 86 states have (on average 1.4767441860465116) internal successors, (127), 89 states have internal predecessors, (127), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:00:22,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 142 transitions. [2024-10-31 22:00:22,566 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 142 transitions. Word has length 7 [2024-10-31 22:00:22,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:22,567 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 142 transitions. [2024-10-31 22:00:22,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:22,568 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 142 transitions. [2024-10-31 22:00:22,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:00:22,569 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:22,569 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:22,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:00:22,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:00:22,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:22,571 INFO L85 PathProgramCache]: Analyzing trace with hash 904285597, now seen corresponding path program 1 times [2024-10-31 22:00:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:00:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251143175] [2024-10-31 22:00:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:22,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:00:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:22,592 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:00:22,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:00:22,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:00:22,622 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:00:22,625 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-10-31 22:00:22,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-10-31 22:00:22,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:00:22,632 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:00:22,647 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:00:22,653 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:00:22 BoogieIcfgContainer [2024-10-31 22:00:22,654 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:00:22,655 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:00:22,655 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:00:22,655 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:00:22,656 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:22" (3/4) ... [2024-10-31 22:00:22,659 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:00:22,661 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:00:22,662 INFO L158 Benchmark]: Toolchain (without parser) took 2017.04ms. Allocated memory was 138.4MB in the beginning and 224.4MB in the end (delta: 86.0MB). Free memory was 99.2MB in the beginning and 174.1MB in the end (delta: -74.8MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-10-31 22:00:22,662 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:00:22,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 517.19ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 81.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-10-31 22:00:22,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.50ms. Allocated memory is still 138.4MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:00:22,667 INFO L158 Benchmark]: Boogie Preprocessor took 63.72ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 77.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:00:22,668 INFO L158 Benchmark]: RCFGBuilder took 793.26ms. Allocated memory is still 138.4MB. Free memory was 76.8MB in the beginning and 51.8MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-31 22:00:22,668 INFO L158 Benchmark]: TraceAbstraction took 563.28ms. Allocated memory was 138.4MB in the beginning and 224.4MB in the end (delta: 86.0MB). Free memory was 51.2MB in the beginning and 174.1MB in the end (delta: -122.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:00:22,669 INFO L158 Benchmark]: Witness Printer took 6.22ms. Allocated memory is still 224.4MB. Free memory is still 174.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:00:22,672 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 138.4MB. Free memory is still 107.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 517.19ms. Allocated memory is still 138.4MB. Free memory was 98.7MB in the beginning and 81.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.50ms. Allocated memory is still 138.4MB. Free memory was 81.7MB in the beginning and 79.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.72ms. Allocated memory is still 138.4MB. Free memory was 79.6MB in the beginning and 77.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 793.26ms. Allocated memory is still 138.4MB. Free memory was 76.8MB in the beginning and 51.8MB in the end (delta: 25.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 563.28ms. Allocated memory was 138.4MB in the beginning and 224.4MB in the end (delta: 86.0MB). Free memory was 51.2MB in the beginning and 174.1MB in the end (delta: -122.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 6.22ms. Allocated memory is still 224.4MB. Free memory is still 174.1MB. 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: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.39843f) [L48] reach_error() - UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 105 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 151 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, 151 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=105occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 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 22:00:22,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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_2fcb024b-e4a1-4265-a849-e23d6607929a/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 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:00:25,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:00:25,162 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-31 22:00:25,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:00:25,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:00:25,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:00:25,215 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:00:25,216 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:00:25,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:00:25,219 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:00:25,220 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:00:25,220 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:00:25,221 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:00:25,221 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:00:25,222 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:00:25,226 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:00:25,226 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:00:25,227 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:00:25,227 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:00:25,227 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:00:25,228 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:00:25,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:00:25,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:00:25,231 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:00:25,231 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-31 22:00:25,231 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:00:25,232 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-31 22:00:25,232 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:00:25,232 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:00:25,232 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:00:25,233 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:00:25,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:00:25,235 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:00:25,235 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:00:25,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:25,236 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:00:25,236 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:00:25,237 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:00:25,237 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-31 22:00:25,237 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-10-31 22:00:25,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:00:25,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:00:25,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:00:25,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:00:25,239 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-31 22:00:25,239 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_2fcb024b-e4a1-4265-a849-e23d6607929a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 266a58712a9e3b3c15bc4c8023b36b45db38173e85b035c92eb7b44ae9d55916 [2024-10-31 22:00:25,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:00:25,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:00:25,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:00:25,684 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:00:25,685 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:00:25,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c Unable to find full path for "g++" [2024-10-31 22:00:27,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:00:28,204 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:00:28,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c [2024-10-31 22:00:28,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/a07801d20/f416dec60a304315bb6a1b43d959170d/FLAG030ed1649 [2024-10-31 22:00:28,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/data/a07801d20/f416dec60a304315bb6a1b43d959170d [2024-10-31 22:00:28,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:00:28,244 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:00:28,247 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:28,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:00:28,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:00:28,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b67a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28, skipping insertion in model container [2024-10-31 22:00:28,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,301 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:00:28,542 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-31 22:00:28,551 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-31 22:00:28,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:28,652 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:00:28,672 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[1999,2012] [2024-10-31 22:00:28,674 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_2fcb024b-e4a1-4265-a849-e23d6607929a/sv-benchmarks/c/combinations/square_3+soft_float_1-2a.c.cil.c[2393,2406] [2024-10-31 22:00:28,707 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:00:28,729 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:00:28,730 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28 WrapperNode [2024-10-31 22:00:28,730 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:00:28,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:28,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:00:28,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:00:28,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,860 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-10-31 22:00:28,867 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:00:28,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:00:28,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:00:28,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:00:28,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,901 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,921 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:00:28,925 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,925 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,943 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,952 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,955 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,961 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:00:28,970 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:00:28,971 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:00:28,971 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:00:28,972 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (1/1) ... [2024-10-31 22:00:28,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:00:29,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:00:29,030 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:00:29,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:00:29,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:00:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:00:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-10-31 22:00:29,076 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-10-31 22:00:29,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:00:29,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:00:29,080 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-31 22:00:29,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-31 22:00:29,230 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:00:29,233 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:00:33,974 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-10-31 22:00:33,974 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:00:33,991 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:00:33,991 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:00:33,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:33 BoogieIcfgContainer [2024-10-31 22:00:33,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:00:33,994 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:00:33,994 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:00:33,998 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:00:33,998 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:00:28" (1/3) ... [2024-10-31 22:00:33,999 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2427b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:33, skipping insertion in model container [2024-10-31 22:00:33,999 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:00:28" (2/3) ... [2024-10-31 22:00:34,000 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d2427b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:00:33, skipping insertion in model container [2024-10-31 22:00:34,000 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:00:33" (3/3) ... [2024-10-31 22:00:34,001 INFO L112 eAbstractionObserver]: Analyzing ICFG square_3+soft_float_1-2a.c.cil.c [2024-10-31 22:00:34,030 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:00:34,031 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:00:34,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:00:34,141 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;@6ffed0d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:00:34,141 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-10-31 22:00:34,146 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-10-31 22:00:34,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:00:34,154 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:34,155 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:34,156 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:00:34,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:34,169 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2024-10-31 22:00:34,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:00:34,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311737093] [2024-10-31 22:00:34,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:34,186 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 22:00:34,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:00:34,190 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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 22:00:34,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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 22:00:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:00:34,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:00:34,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:00:34,837 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 22:00:34,837 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:00:34,838 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:00:34,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311737093] [2024-10-31 22:00:34,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311737093] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:00:34,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:00:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:00:34,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267619904] [2024-10-31 22:00:34,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:00:34,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:00:34,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:00:34,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:00:34,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:00:34,953 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:35,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:00:35,006 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2024-10-31 22:00:35,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:00:35,009 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-31 22:00:35,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-31 22:00:35,024 INFO L225 Difference]: With dead ends: 157 [2024-10-31 22:00:35,024 INFO L226 Difference]: Without dead ends: 74 [2024-10-31 22:00:35,032 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 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 22:00:35,042 INFO L432 NwaCegarLoop]: 116 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, 116 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 22:00:35,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-31 22:00:35,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-10-31 22:00:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2024-10-31 22:00:35,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-10-31 22:00:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2024-10-31 22:00:35,128 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2024-10-31 22:00:35,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-31 22:00:35,129 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2024-10-31 22:00:35,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:00:35,132 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2024-10-31 22:00:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-31 22:00:35,133 INFO L207 NwaCegarLoop]: Found error trace [2024-10-31 22:00:35,133 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:00:35,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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)] Ended with exit code 0 [2024-10-31 22:00:35,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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 22:00:35,334 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-31 22:00:35,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:00:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2024-10-31 22:00:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:00:35,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010626551] [2024-10-31 22:00:35,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:00:35,338 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 22:00:35,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:00:35,347 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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 22:00:35,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2fcb024b-e4a1-4265-a849-e23d6607929a/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