./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB --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 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:18:49,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:18:49,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:18:49,359 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:18:49,359 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:18:49,386 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:18:49,387 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:18:49,387 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:18:49,387 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:18:49,387 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:18:49,387 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:18:49,387 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:18:49,388 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:18:49,388 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:18:49,388 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:18:49,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:18:49,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:18:49,390 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:18:49,391 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:18:49,391 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:49,391 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:49,391 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:49,391 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:49,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:18:49,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:49,392 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:49,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:49,392 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:49,392 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:18:49,393 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:18:49,394 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:18:49,394 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-11-28 02:18:49,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:18:49,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:18:49,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:18:49,733 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:18:49,733 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:18:49,735 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-28 02:18:52,958 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/6e74f2c0a/84fe6337c20c49fab758b36a59f06d4f/FLAG88db0efb1 [2024-11-28 02:18:53,330 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:18:53,331 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-28 02:18:53,340 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/6e74f2c0a/84fe6337c20c49fab758b36a59f06d4f/FLAG88db0efb1 [2024-11-28 02:18:53,366 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/6e74f2c0a/84fe6337c20c49fab758b36a59f06d4f [2024-11-28 02:18:53,370 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:18:53,372 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:18:53,375 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:53,375 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:18:53,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:18:53,384 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,386 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fa054b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53, skipping insertion in model container [2024-11-28 02:18:53,386 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,420 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:18:53,603 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-28 02:18:53,608 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-28 02:18:53,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:53,665 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:18:53,681 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-28 02:18:53,683 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-28 02:18:53,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:18:53,762 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:18:53,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53 WrapperNode [2024-11-28 02:18:53,763 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:18:53,764 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:53,764 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:18:53,764 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:18:53,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,785 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,824 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-28 02:18:53,827 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:18:53,828 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:18:53,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:18:53,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:18:53,841 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,848 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,879 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]. [2024-11-28 02:18:53,879 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,879 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,890 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,895 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,910 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,912 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,918 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:18:53,919 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:18:53,919 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:18:53,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:18:53,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (1/1) ... [2024-11-28 02:18:53,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:53,968 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:18:53,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:18:54,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:18:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-28 02:18:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-28 02:18:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:18:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:18:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:18:54,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:18:54,008 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:18:54,127 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:18:54,130 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:18:54,692 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-11-28 02:18:54,692 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:18:54,705 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:18:54,705 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:18:54,705 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:54 BoogieIcfgContainer [2024-11-28 02:18:54,706 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:18:54,708 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:18:54,709 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:18:54,714 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:18:54,715 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:18:53" (1/3) ... [2024-11-28 02:18:54,715 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6194d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:54, skipping insertion in model container [2024-11-28 02:18:54,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:18:53" (2/3) ... [2024-11-28 02:18:54,716 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6194d6eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:18:54, skipping insertion in model container [2024-11-28 02:18:54,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:54" (3/3) ... [2024-11-28 02:18:54,717 INFO L128 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-11-28 02:18:54,736 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:18:54,737 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 82 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 02:18:54,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:18:54,813 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;@4a4b43ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:18:54,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:18:54,818 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:18:54,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:18:54,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:54,825 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:54,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:18:54,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:54,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-11-28 02:18:54,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:54,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161058107] [2024-11-28 02:18:54,841 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:54,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:18:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:54,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:18:54,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:18:54,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161058107] [2024-11-28 02:18:54,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161058107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:54,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:18:54,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:18:54,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043535271] [2024-11-28 02:18:54,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:54,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:18:54,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:18:55,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:18:55,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:18:55,003 INFO L87 Difference]: Start difference. First operand has 82 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-11-28 02:18:55,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:55,043 INFO L93 Difference]: Finished difference Result 159 states and 241 transitions. [2024-11-28 02:18:55,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:18:55,046 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 [2024-11-28 02:18:55,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:55,055 INFO L225 Difference]: With dead ends: 159 [2024-11-28 02:18:55,056 INFO L226 Difference]: Without dead ends: 73 [2024-11-28 02:18:55,062 INFO L434 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 [2024-11-28 02:18:55,067 INFO L435 NwaCegarLoop]: 113 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, 113 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 [2024-11-28 02:18:55,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:18:55,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-11-28 02:18:55,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-11-28 02:18:55,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 66 states have internal predecessors, (93), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:18:55,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2024-11-28 02:18:55,109 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 7 [2024-11-28 02:18:55,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:55,109 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2024-11-28 02:18:55,110 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) [2024-11-28 02:18:55,110 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2024-11-28 02:18:55,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:18:55,110 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:55,111 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:55,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:18:55,111 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:18:55,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:55,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-11-28 02:18:55,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:55,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949235398] [2024-11-28 02:18:55,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:55,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:18:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:18:55,132 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:18:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:18:55,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:18:55,159 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:18:55,160 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 02:18:55,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 02:18:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:18:55,166 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:18:55,181 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:18:55,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:18:55 BoogieIcfgContainer [2024-11-28 02:18:55,188 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:18:55,189 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:18:55,189 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:18:55,189 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:18:55,190 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:18:54" (3/4) ... [2024-11-28 02:18:55,194 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-28 02:18:55,196 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:18:55,197 INFO L158 Benchmark]: Toolchain (without parser) took 1825.37ms. Allocated memory is still 167.8MB. Free memory was 129.8MB in the beginning and 68.3MB in the end (delta: 61.4MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-11-28 02:18:55,199 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:18:55,199 INFO L158 Benchmark]: CACSL2BoogieTranslator took 388.47ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 115.3MB in the end (delta: 14.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:18:55,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.37ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 113.3MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:18:55,201 INFO L158 Benchmark]: Boogie Preprocessor took 90.71ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 111.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:18:55,201 INFO L158 Benchmark]: RCFGBuilder took 786.49ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 90.1MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:18:55,203 INFO L158 Benchmark]: TraceAbstraction took 480.16ms. Allocated memory is still 167.8MB. Free memory was 89.5MB in the beginning and 68.3MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:18:55,204 INFO L158 Benchmark]: Witness Printer took 7.21ms. Allocated memory is still 167.8MB. Free memory is still 68.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:18:55,206 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 167.8MB. Free memory is still 103.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 388.47ms. Allocated memory is still 167.8MB. Free memory was 129.4MB in the beginning and 115.3MB in the end (delta: 14.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.37ms. Allocated memory is still 167.8MB. Free memory was 115.3MB in the beginning and 113.3MB in the end (delta: 2.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.71ms. Allocated memory is still 167.8MB. Free memory was 113.3MB in the beginning and 111.1MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 786.49ms. Allocated memory is still 167.8MB. Free memory was 111.1MB in the beginning and 90.1MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 480.16ms. Allocated memory is still 167.8MB. Free memory was 89.5MB in the beginning and 68.3MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 7.21ms. Allocated memory is still 167.8MB. Free memory is still 68.3MB. 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 someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] 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 < 1.39844f) [L48] reach_error() - UnprovableResult [Line: 60]: 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, 82 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, 113 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, 113 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=82occurred 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-28 02:18:55,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB --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 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:18:58,429 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:18:58,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-28 02:18:58,548 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:18:58,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:18:58,606 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:18:58,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:18:58,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:18:58,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:18:58,609 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:18:58,609 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:18:58,610 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:18:58,610 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:18:58,610 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:18:58,610 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:18:58,610 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:18:58,611 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:18:58,611 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:18:58,611 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:18:58,611 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:18:58,613 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:18:58,614 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:18:58,614 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:18:58,614 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:18:58,614 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:18:58,614 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:58,615 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:18:58,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:18:58,615 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:18:58,616 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:18:58,616 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:18:58,616 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:18:58,616 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:18:58,616 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:18:58,617 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:18:58,617 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:18:58,617 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:18:58,617 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:18:58,618 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-11-28 02:18:58,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:18:58,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:18:58,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:18:58,995 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:18:58,995 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:18:58,997 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-28 02:19:02,350 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/8c60b7f29/e9e4f075d1824d6fa8b9271f0c5d6970/FLAG9f5d583fa [2024-11-28 02:19:02,674 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:19:02,675 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-28 02:19:02,685 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/8c60b7f29/e9e4f075d1824d6fa8b9271f0c5d6970/FLAG9f5d583fa [2024-11-28 02:19:02,938 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/data/8c60b7f29/e9e4f075d1824d6fa8b9271f0c5d6970 [2024-11-28 02:19:02,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:19:02,944 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:19:02,946 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:19:02,946 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:19:02,952 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:19:02,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:19:02" (1/1) ... [2024-11-28 02:19:02,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a5084c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:02, skipping insertion in model container [2024-11-28 02:19:02,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:19:02" (1/1) ... [2024-11-28 02:19:02,980 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:19:03,212 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-28 02:19:03,225 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-28 02:19:03,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:19:03,295 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:19:03,311 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-28 02:19:03,313 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-28 02:19:03,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:19:03,367 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:19:03,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03 WrapperNode [2024-11-28 02:19:03,368 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:19:03,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:19:03,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:19:03,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:19:03,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,417 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-28 02:19:03,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:19:03,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:19:03,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:19:03,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:19:03,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,430 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,433 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,448 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]. [2024-11-28 02:19:03,448 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,466 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,467 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,476 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,478 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,479 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,483 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:19:03,484 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:19:03,484 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:19:03,484 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:19:03,485 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (1/1) ... [2024-11-28 02:19:03,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:19:03,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:19:03,521 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:19:03,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:19:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:19:03,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 02:19:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-28 02:19:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-28 02:19:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:19:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:19:03,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:19:03,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:19:03,658 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:19:03,660 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:19:08,320 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-28 02:19:08,320 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:19:08,333 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:19:08,334 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:19:08,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:19:08 BoogieIcfgContainer [2024-11-28 02:19:08,334 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:19:08,337 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:19:08,338 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:19:08,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:19:08,344 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:19:02" (1/3) ... [2024-11-28 02:19:08,345 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568b7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:19:08, skipping insertion in model container [2024-11-28 02:19:08,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:19:03" (2/3) ... [2024-11-28 02:19:08,346 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3568b7d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:19:08, skipping insertion in model container [2024-11-28 02:19:08,346 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:19:08" (3/3) ... [2024-11-28 02:19:08,347 INFO L128 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-11-28 02:19:08,385 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:19:08,387 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 59 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-28 02:19:08,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:19:08,460 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;@1104d7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:19:08,460 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 02:19:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 52 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:19:08,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:19:08,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:08,473 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:08,473 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:19:08,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:08,481 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-11-28 02:19:08,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:08,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [322370881] [2024-11-28 02:19:08,494 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:08,494 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 [2024-11-28 02:19:08,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 02:19:08,503 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 02:19:08,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 02:19:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:19:09,070 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:19:09,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:19:09,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:19:09,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:19:09,095 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:19:09,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [322370881] [2024-11-28 02:19:09,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [322370881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:19:09,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:19:09,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:19:09,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011850709] [2024-11-28 02:19:09,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:19:09,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:19:09,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:19:09,123 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:19:09,124 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:19:09,126 INFO L87 Difference]: Start difference. First operand has 59 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 52 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2024-11-28 02:19:09,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:19:09,152 INFO L93 Difference]: Finished difference Result 113 states and 171 transitions. [2024-11-28 02:19:09,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:19:09,154 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 [2024-11-28 02:19:09,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:19:09,161 INFO L225 Difference]: With dead ends: 113 [2024-11-28 02:19:09,162 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:19:09,166 INFO L434 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 [2024-11-28 02:19:09,173 INFO L435 NwaCegarLoop]: 80 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, 80 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 [2024-11-28 02:19:09,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:19:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:19:09,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 02:19:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:19:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2024-11-28 02:19:09,230 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 7 [2024-11-28 02:19:09,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:19:09,233 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2024-11-28 02:19:09,234 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) [2024-11-28 02:19:09,234 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2024-11-28 02:19:09,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:19:09,234 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:19:09,234 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:19:09,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 02:19:09,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 02:19:09,435 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:19:09,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:19:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-11-28 02:19:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:19:09,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951950335] [2024-11-28 02:19:09,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:19:09,437 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 [2024-11-28 02:19:09,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/mathsat [2024-11-28 02:19:09,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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) [2024-11-28 02:19:09,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 02:27:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:27:50,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:27:50,481 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:27:59,339 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:28:07,468 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:28:15,714 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:28:19,801 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-28 02:28:23,849 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2024-11-28 02:28:40,293 WARN L286 SmtUtils]: Spent 8.29s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:28:48,553 WARN L286 SmtUtils]: Spent 8.26s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:28:56,687 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:29:09,021 WARN L286 SmtUtils]: Spent 8.27s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:29:17,388 WARN L286 SmtUtils]: Spent 8.37s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:29:25,517 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 02:29:29,643 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-28 02:29:33,700 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-28 02:29:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:29:33,701 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:33,701 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:33,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951950335] [2024-11-28 02:29:33,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951950335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:33,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:33,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:29:33,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651383270] [2024-11-28 02:29:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:33,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:29:33,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:33,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:29:33,705 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=11, Unknown=4, NotChecked=14, Total=42 [2024-11-28 02:29:33,706 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:38,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:29:42,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:29:46,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 02:29:46,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:46,411 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-11-28 02:29:46,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:29:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 02:29:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:46,414 INFO L225 Difference]: With dead ends: 50 [2024-11-28 02:29:46,414 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 02:29:46,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=13, Invalid=11, Unknown=4, NotChecked=14, Total=42 [2024-11-28 02:29:46,416 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:46,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 172 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 138 Unchecked, 12.7s Time] [2024-11-28 02:29:46,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 02:29:46,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-28 02:29:46,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:29:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2024-11-28 02:29:46,426 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 7 [2024-11-28 02:29:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:46,427 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2024-11-28 02:29:46,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:29:46,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2024-11-28 02:29:46,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 02:29:46,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:46,429 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:46,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-28 02:29:46,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/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 [2024-11-28 02:29:46,630 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:46,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash -443415814, now seen corresponding path program 1 times [2024-11-28 02:29:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:46,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669058072] [2024-11-28 02:29:46,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:46,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:46,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:29:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:46,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:29:46,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:46,983 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:29:46,983 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:46,984 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:46,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669058072] [2024-11-28 02:29:46,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669058072] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:46,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:46,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:29:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247563867] [2024-11-28 02:29:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:46,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:46,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:46,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:46,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:46,987 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:47,753 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2024-11-28 02:29:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:29:47,754 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-28 02:29:47,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:47,757 INFO L225 Difference]: With dead ends: 98 [2024-11-28 02:29:47,757 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 02:29:47,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:29:47,759 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 10 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:47,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:29:47,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 02:29:47,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-11-28 02:29:47,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:29:47,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-11-28 02:29:47,772 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 43 [2024-11-28 02:29:47,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:47,773 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-11-28 02:29:47,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:47,773 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-11-28 02:29:47,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 02:29:47,777 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:47,778 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:47,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:29:47,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:47,978 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:47,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:47,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1534512391, now seen corresponding path program 1 times [2024-11-28 02:29:47,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:47,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387602732] [2024-11-28 02:29:47,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:47,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:47,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:47,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:47,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:29:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:48,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:29:48,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:29:48,289 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:48,289 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:48,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387602732] [2024-11-28 02:29:48,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387602732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:48,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:48,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:29:48,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501161327] [2024-11-28 02:29:48,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:48,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:29:48,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:48,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:29:48,291 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:29:48,292 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:48,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:48,338 INFO L93 Difference]: Finished difference Result 70 states and 98 transitions. [2024-11-28 02:29:48,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:29:48,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2024-11-28 02:29:48,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:48,339 INFO L225 Difference]: With dead ends: 70 [2024-11-28 02:29:48,340 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:29:48,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:29:48,341 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 13 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:48,341 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 124 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:29:48,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:29:48,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 02:29:48,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:29:48,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2024-11-28 02:29:48,351 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 45 [2024-11-28 02:29:48,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:48,351 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2024-11-28 02:29:48,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:48,352 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2024-11-28 02:29:48,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:29:48,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:48,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:48,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:29:48,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:48,554 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:48,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:48,555 INFO L85 PathProgramCache]: Analyzing trace with hash 677551233, now seen corresponding path program 1 times [2024-11-28 02:29:48,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:48,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720245701] [2024-11-28 02:29:48,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:48,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:48,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:48,558 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:48,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:29:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:48,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:29:48,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:48,945 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:29:48,945 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:48,945 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:48,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720245701] [2024-11-28 02:29:48,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720245701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:48,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:48,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:29:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757499212] [2024-11-28 02:29:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:48,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:48,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:48,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:48,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:48,948 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:49,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:49,041 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2024-11-28 02:29:49,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:49,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2024-11-28 02:29:49,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:49,043 INFO L225 Difference]: With dead ends: 71 [2024-11-28 02:29:49,043 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:29:49,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:49,045 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:49,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 181 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:29:49,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:29:49,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 02:29:49,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 02:29:49,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-11-28 02:29:49,064 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 47 [2024-11-28 02:29:49,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:49,064 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-11-28 02:29:49,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-11-28 02:29:49,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 02:29:49,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:49,066 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:49,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:29:49,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:49,267 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:49,267 INFO L85 PathProgramCache]: Analyzing trace with hash 90745219, now seen corresponding path program 1 times [2024-11-28 02:29:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [272633553] [2024-11-28 02:29:49,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:49,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:49,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:49,269 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:49,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:29:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:49,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:29:49,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:49,641 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:29:49,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:49,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:49,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272633553] [2024-11-28 02:29:49,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272633553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:49,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:49,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:29:49,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251340134] [2024-11-28 02:29:49,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:49,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:49,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:49,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:49,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:49,644 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:50,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:50,150 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2024-11-28 02:29:50,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:50,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-11-28 02:29:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:50,154 INFO L225 Difference]: With dead ends: 99 [2024-11-28 02:29:50,154 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 02:29:50,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:50,156 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:50,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:29:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 02:29:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-28 02:29:50,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 46 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:29:50,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2024-11-28 02:29:50,167 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 47 [2024-11-28 02:29:50,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:50,167 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2024-11-28 02:29:50,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2024-11-28 02:29:50,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:29:50,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:50,170 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:50,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:29:50,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:50,371 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:50,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:50,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1565809172, now seen corresponding path program 1 times [2024-11-28 02:29:50,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:50,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411202418] [2024-11-28 02:29:50,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:50,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:50,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:50,374 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:50,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:29:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:50,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:29:50,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:50,776 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 02:29:50,777 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:50,777 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:50,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411202418] [2024-11-28 02:29:50,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411202418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:50,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:50,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:29:50,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265423721] [2024-11-28 02:29:50,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:50,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:29:50,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:50,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:29:50,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:50,780 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:51,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:51,283 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-11-28 02:29:51,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:29:51,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-28 02:29:51,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:51,286 INFO L225 Difference]: With dead ends: 106 [2024-11-28 02:29:51,286 INFO L226 Difference]: Without dead ends: 60 [2024-11-28 02:29:51,286 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:29:51,287 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:51,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 153 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:29:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-11-28 02:29:51,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2024-11-28 02:29:51,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:29:51,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-11-28 02:29:51,301 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 48 [2024-11-28 02:29:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:51,301 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-11-28 02:29:51,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-11-28 02:29:51,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:29:51,304 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:51,304 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:51,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:51,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:51,505 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:51,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:51,506 INFO L85 PathProgramCache]: Analyzing trace with hash 268015152, now seen corresponding path program 1 times [2024-11-28 02:29:51,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:51,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334845986] [2024-11-28 02:29:51,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:51,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:51,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:51,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:51,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:29:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:51,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:29:51,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:29:52,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:53,266 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:29:53,267 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:53,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334845986] [2024-11-28 02:29:53,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334845986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:29:53,267 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:29:53,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-11-28 02:29:53,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35908069] [2024-11-28 02:29:53,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:29:53,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:29:53,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:53,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:29:53,269 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:29:53,270 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:53,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:53,759 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2024-11-28 02:29:53,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:29:53,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-28 02:29:53,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:53,762 INFO L225 Difference]: With dead ends: 67 [2024-11-28 02:29:53,762 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 02:29:53,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:29:53,764 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:53,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 240 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:29:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 02:29:53,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-11-28 02:29:53,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:29:53,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-11-28 02:29:53,787 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 48 [2024-11-28 02:29:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:53,790 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-11-28 02:29:53,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:29:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-11-28 02:29:53,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:29:53,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:53,792 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:53,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 02:29:53,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:53,993 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:53,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:53,994 INFO L85 PathProgramCache]: Analyzing trace with hash 684163988, now seen corresponding path program 1 times [2024-11-28 02:29:53,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:53,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124316423] [2024-11-28 02:29:53,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:53,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:53,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:53,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:53,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:29:54,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:54,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:29:54,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:55,164 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 02:29:55,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:29:56,004 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:29:56,005 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:56,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124316423] [2024-11-28 02:29:56,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124316423] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:29:56,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:29:56,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-28 02:29:56,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990990572] [2024-11-28 02:29:56,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:56,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:29:56,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:56,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:29:56,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:29:56,008 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:56,335 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-11-28 02:29:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:29:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-28 02:29:56,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:56,338 INFO L225 Difference]: With dead ends: 62 [2024-11-28 02:29:56,338 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 02:29:56,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:29:56,339 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:56,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 289 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:29:56,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 02:29:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-28 02:29:56,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 48 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:29:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-11-28 02:29:56,350 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 50 [2024-11-28 02:29:56,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:56,351 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-11-28 02:29:56,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-11-28 02:29:56,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:29:56,353 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:56,353 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:56,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:29:56,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:56,558 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:56,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash 626905686, now seen corresponding path program 1 times [2024-11-28 02:29:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379116057] [2024-11-28 02:29:56,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:56,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:56,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:56,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:56,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:29:56,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:56,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:29:56,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:57,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:29:57,429 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:57,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:57,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379116057] [2024-11-28 02:29:57,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379116057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:57,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:57,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:29:57,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046143356] [2024-11-28 02:29:57,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:57,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:29:57,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:57,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:29:57,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:29:57,431 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:57,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:57,969 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2024-11-28 02:29:57,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:29:57,971 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-28 02:29:57,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:57,972 INFO L225 Difference]: With dead ends: 87 [2024-11-28 02:29:57,973 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 02:29:57,973 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:29:57,974 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:57,975 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 326 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:29:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 02:29:57,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-28 02:29:57,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 60 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-11-28 02:29:57,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2024-11-28 02:29:57,991 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 50 [2024-11-28 02:29:57,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:57,992 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2024-11-28 02:29:57,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:57,992 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2024-11-28 02:29:57,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 02:29:57,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:57,994 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:58,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:29:58,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:58,194 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:58,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash 885071124, now seen corresponding path program 1 times [2024-11-28 02:29:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176614695] [2024-11-28 02:29:58,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:58,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:58,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:58,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:58,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:29:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:58,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:29:58,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:29:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:29:58,626 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:29:58,626 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:29:58,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176614695] [2024-11-28 02:29:58,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176614695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:29:58,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:29:58,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:29:58,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946185170] [2024-11-28 02:29:58,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:29:58,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:29:58,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:29:58,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:29:58,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:29:58,629 INFO L87 Difference]: Start difference. First operand 69 states and 92 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:58,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:29:58,912 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2024-11-28 02:29:58,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:29:58,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-28 02:29:58,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:29:58,915 INFO L225 Difference]: With dead ends: 80 [2024-11-28 02:29:58,915 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 02:29:58,916 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:29:58,917 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:29:58,917 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:29:58,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 02:29:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-28 02:29:58,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:29:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2024-11-28 02:29:58,932 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 50 [2024-11-28 02:29:58,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:29:58,933 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2024-11-28 02:29:58,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:29:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2024-11-28 02:29:58,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 02:29:58,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:29:58,935 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:29:58,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:29:59,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:59,137 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:29:59,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:29:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash 12145430, now seen corresponding path program 1 times [2024-11-28 02:29:59,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:29:59,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766667911] [2024-11-28 02:29:59,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:29:59,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:29:59,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:29:59,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:29:59,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:29:59,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:29:59,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:29:59,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:30:00,231 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:30:00,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:00,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766667911] [2024-11-28 02:30:00,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766667911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:00,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:30:00,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-28 02:30:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050139813] [2024-11-28 02:30:00,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:00,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:30:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:00,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:30:00,854 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:30:00,855 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:01,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:01,785 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2024-11-28 02:30:01,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:30:01,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-11-28 02:30:01,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:01,787 INFO L225 Difference]: With dead ends: 89 [2024-11-28 02:30:01,787 INFO L226 Difference]: Without dead ends: 59 [2024-11-28 02:30:01,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:30:01,789 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:01,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 353 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:30:01,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-11-28 02:30:01,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-11-28 02:30:01,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 51 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 02:30:01,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2024-11-28 02:30:01,800 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 54 [2024-11-28 02:30:01,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:01,800 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2024-11-28 02:30:01,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:01,800 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2024-11-28 02:30:01,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 02:30:01,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:01,802 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:01,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:02,003 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:02,003 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:02,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:02,003 INFO L85 PathProgramCache]: Analyzing trace with hash -654941126, now seen corresponding path program 2 times [2024-11-28 02:30:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:02,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346126829] [2024-11-28 02:30:02,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:02,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:02,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:02,006 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:02,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:30:02,115 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:02,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:02,117 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:30:02,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:30:03,783 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:05,973 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 02:30:05,973 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:05,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346126829] [2024-11-28 02:30:05,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346126829] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:05,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:30:05,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-28 02:30:05,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508762492] [2024-11-28 02:30:05,974 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:05,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:30:05,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:05,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:30:05,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:30:05,976 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 02:30:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:07,477 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-11-28 02:30:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:30:07,478 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 57 [2024-11-28 02:30:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:07,479 INFO L225 Difference]: With dead ends: 88 [2024-11-28 02:30:07,479 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 02:30:07,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:30:07,481 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 23 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:07,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 599 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 02:30:07,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 02:30:07,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-11-28 02:30:07,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:30:07,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-11-28 02:30:07,493 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 57 [2024-11-28 02:30:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:07,493 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-11-28 02:30:07,494 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-28 02:30:07,494 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-11-28 02:30:07,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 02:30:07,495 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:07,495 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:07,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:07,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:07,696 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:07,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:07,697 INFO L85 PathProgramCache]: Analyzing trace with hash 96951158, now seen corresponding path program 3 times [2024-11-28 02:30:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:07,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942276790] [2024-11-28 02:30:07,697 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:30:07,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:07,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:07,700 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:07,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:30:07,792 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:30:07,793 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:07,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:30:07,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:30:08,315 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:30:08,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:08,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942276790] [2024-11-28 02:30:08,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942276790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:08,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:08,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:30:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39071524] [2024-11-28 02:30:08,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:08,316 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:30:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:08,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:30:08,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:08,316 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:09,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:09,156 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-11-28 02:30:09,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:30:09,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2024-11-28 02:30:09,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:09,158 INFO L225 Difference]: With dead ends: 120 [2024-11-28 02:30:09,158 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 02:30:09,159 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:09,160 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:09,160 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 181 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:30:09,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 02:30:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-11-28 02:30:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:30:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2024-11-28 02:30:09,170 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 57 [2024-11-28 02:30:09,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:09,171 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2024-11-28 02:30:09,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2024-11-28 02:30:09,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 02:30:09,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:09,173 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:09,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:30:09,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:09,373 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:09,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:09,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1853551782, now seen corresponding path program 1 times [2024-11-28 02:30:09,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:09,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630939347] [2024-11-28 02:30:09,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:09,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:09,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:09,378 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:09,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:30:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:09,464 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:30:09,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:30:09,916 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:30:10,891 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:10,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630939347] [2024-11-28 02:30:10,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630939347] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:10,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:30:10,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 02:30:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892666327] [2024-11-28 02:30:10,892 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:10,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:30:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:10,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:30:10,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:30:10,894 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:30:12,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:12,078 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2024-11-28 02:30:12,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:30:12,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-11-28 02:30:12,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:12,080 INFO L225 Difference]: With dead ends: 139 [2024-11-28 02:30:12,081 INFO L226 Difference]: Without dead ends: 75 [2024-11-28 02:30:12,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:30:12,082 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 15 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:12,082 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 241 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 02:30:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-11-28 02:30:12,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-11-28 02:30:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 64 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:30:12,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2024-11-28 02:30:12,097 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 58 [2024-11-28 02:30:12,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:12,098 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2024-11-28 02:30:12,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:30:12,099 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2024-11-28 02:30:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 02:30:12,100 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:12,100 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:12,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:30:12,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:12,301 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:12,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:12,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1127828100, now seen corresponding path program 1 times [2024-11-28 02:30:12,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:12,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943049330] [2024-11-28 02:30:12,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:12,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:12,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:12,304 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:12,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:30:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:12,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:30:12,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:30:13,215 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:30:13,215 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943049330] [2024-11-28 02:30:13,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943049330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:13,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:13,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:30:13,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825142068] [2024-11-28 02:30:13,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:13,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:30:13,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:13,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:30:13,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:30:13,218 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:14,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:14,188 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2024-11-28 02:30:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:30:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-11-28 02:30:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:14,191 INFO L225 Difference]: With dead ends: 140 [2024-11-28 02:30:14,191 INFO L226 Difference]: Without dead ends: 76 [2024-11-28 02:30:14,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:30:14,193 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:14,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 185 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 02:30:14,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-28 02:30:14,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-11-28 02:30:14,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 64 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-28 02:30:14,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2024-11-28 02:30:14,213 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 58 [2024-11-28 02:30:14,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:14,214 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2024-11-28 02:30:14,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:14,214 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2024-11-28 02:30:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 02:30:14,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:14,215 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:14,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:30:14,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:14,416 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:14,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:14,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1012317842, now seen corresponding path program 1 times [2024-11-28 02:30:14,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:14,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168636083] [2024-11-28 02:30:14,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:14,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:14,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:14,419 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:14,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:30:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:14,494 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:30:14,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 02:30:14,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:30:14,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:14,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168636083] [2024-11-28 02:30:14,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168636083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:14,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:14,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:30:14,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914990196] [2024-11-28 02:30:14,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:14,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:30:14,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:14,853 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:30:14,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:30:14,853 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:15,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:15,426 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2024-11-28 02:30:15,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:30:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2024-11-28 02:30:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:15,428 INFO L225 Difference]: With dead ends: 144 [2024-11-28 02:30:15,428 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 02:30:15,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:30:15,430 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:15,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 133 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:30:15,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 02:30:15,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-11-28 02:30:15,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.25) internal successors, (70), 59 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:30:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-11-28 02:30:15,440 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 59 [2024-11-28 02:30:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:15,441 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-11-28 02:30:15,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-11-28 02:30:15,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 02:30:15,442 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:15,443 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:15,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:30:15,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:15,644 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:15,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:15,644 INFO L85 PathProgramCache]: Analyzing trace with hash 6008039, now seen corresponding path program 1 times [2024-11-28 02:30:15,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:15,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34503511] [2024-11-28 02:30:15,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:15,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:15,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:15,649 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:15,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:30:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:30:15,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:30:15,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:17,057 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:30:17,057 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-28 02:30:19,219 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:19,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34503511] [2024-11-28 02:30:19,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34503511] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:19,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:30:19,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-11-28 02:30:19,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311674548] [2024-11-28 02:30:19,220 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:19,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:30:19,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:19,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:30:19,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:30:19,222 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:30:22,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:22,321 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2024-11-28 02:30:22,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:30:22,321 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-11-28 02:30:22,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:22,322 INFO L225 Difference]: With dead ends: 147 [2024-11-28 02:30:22,322 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 02:30:22,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=141, Invalid=239, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:30:22,323 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:22,323 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 295 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 02:30:22,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 02:30:22,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2024-11-28 02:30:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 62 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:30:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2024-11-28 02:30:22,333 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 60 [2024-11-28 02:30:22,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:22,334 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2024-11-28 02:30:22,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:30:22,334 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2024-11-28 02:30:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 02:30:22,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:22,335 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:22,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:22,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:22,536 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:22,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:22,536 INFO L85 PathProgramCache]: Analyzing trace with hash -263903857, now seen corresponding path program 2 times [2024-11-28 02:30:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:30:22,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1016152717] [2024-11-28 02:30:22,537 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:30:22,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:22,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:30:22,539 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:30:22,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:30:22,620 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:30:22,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:22,622 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:30:22,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:30:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:30:23,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:30:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-28 02:30:24,556 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:30:24,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016152717] [2024-11-28 02:30:24,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016152717] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:30:24,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:30:24,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-28 02:30:24,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777389739] [2024-11-28 02:30:24,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:30:24,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:30:24,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:30:24,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:30:24,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:30:24,558 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:25,677 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2024-11-28 02:30:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:30:25,678 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2024-11-28 02:30:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:25,678 INFO L225 Difference]: With dead ends: 71 [2024-11-28 02:30:25,678 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:30:25,679 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:30:25,681 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:25,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 222 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:30:25,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:30:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:30:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:30:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:30:25,682 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-11-28 02:30:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:25,683 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:30:25,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:30:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:30:25,683 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:30:25,687 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-28 02:30:25,688 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-28 02:30:25,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:30:25,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:30:25,892 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:25,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:30:29,333 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:30:29,347 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-28 02:30:29,348 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-28 02:30:29,351 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-28 02:30:29,351 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-28 02:30:29,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:30:29 BoogieIcfgContainer [2024-11-28 02:30:29,352 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:30:29,352 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:30:29,353 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:30:29,353 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:30:29,356 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:19:08" (3/4) ... [2024-11-28 02:30:29,359 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:30:29,366 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-28 02:30:29,367 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:30:29,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-28 02:30:29,379 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-28 02:30:29,379 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:30:29,379 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:30:29,419 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-28 02:30:29,419 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) [2024-11-28 02:30:29,453 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-28 02:30:29,454 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) [2024-11-28 02:30:29,502 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:30:29,503 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:30:29,504 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:30:29,504 INFO L158 Benchmark]: Toolchain (without parser) took 686560.32ms. Allocated memory is still 83.9MB. Free memory was 60.9MB in the beginning and 50.7MB in the end (delta: 10.1MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2024-11-28 02:30:29,505 INFO L158 Benchmark]: CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:30:29,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.81ms. Allocated memory is still 83.9MB. Free memory was 60.6MB in the beginning and 45.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:30:29,507 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.21ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 43.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:30:29,508 INFO L158 Benchmark]: Boogie Preprocessor took 64.93ms. Allocated memory is still 83.9MB. Free memory was 43.9MB in the beginning and 41.7MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:30:29,510 INFO L158 Benchmark]: RCFGBuilder took 4850.86ms. Allocated memory is still 83.9MB. Free memory was 41.7MB in the beginning and 24.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:30:29,511 INFO L158 Benchmark]: TraceAbstraction took 681014.22ms. Allocated memory is still 83.9MB. Free memory was 24.0MB in the beginning and 57.3MB in the end (delta: -33.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-28 02:30:29,511 INFO L158 Benchmark]: Witness Printer took 151.12ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 50.7MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:30:29,513 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49ms. Allocated memory is still 83.9MB. Free memory was 64.7MB in the beginning and 64.7MB in the end (delta: 34.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.81ms. Allocated memory is still 83.9MB. Free memory was 60.6MB in the beginning and 45.5MB in the end (delta: 15.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.21ms. Allocated memory is still 83.9MB. Free memory was 45.5MB in the beginning and 43.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.93ms. Allocated memory is still 83.9MB. Free memory was 43.9MB in the beginning and 41.7MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4850.86ms. Allocated memory is still 83.9MB. Free memory was 41.7MB in the beginning and 24.6MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 681014.22ms. Allocated memory is still 83.9MB. Free memory was 24.0MB in the beginning and 57.3MB in the end (delta: -33.3MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Witness Printer took 151.12ms. Allocated memory is still 83.9MB. Free memory was 56.5MB in the beginning and 50.7MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 60]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 677.5s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 232 SdHoareTripleChecker+Valid, 23.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 4285 SdHoareTripleChecker+Invalid, 23.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 3235 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 915 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 1050 mSDtfsCounter, 915 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1295 GetRequests, 1187 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 29.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=15, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 19 MinimizatonAttempts, 58 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 521.4s SatisfiabilityAnalysisTime, 124.0s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1274 ConstructedInterpolants, 2 QuantifiedInterpolants, 2373 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1694 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 26 InterpolantComputations, 13 PerfectInterpolantSequences, 725/826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:30:29,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b4445ae8-4901-4a2d-a76e-f20c701e9c51/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE