./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC --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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:29:27,586 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:29:27,686 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:29:27,694 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:29:27,694 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:29:27,731 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:29:27,732 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:29:27,732 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:29:27,733 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:29:27,733 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:29:27,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:29:27,734 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:29:27,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:29:27,734 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:29:27,734 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:29:27,734 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:29:27,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:29:27,736 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:29:27,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:27,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:27,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:27,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:27,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:27,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:29:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:29:27,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:29:27,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:29:27,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:29:27,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:29:27,739 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_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC 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 -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-24 00:29:28,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:29:28,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:29:28,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:29:28,099 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:29:28,099 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:29:28,101 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:31,117 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/bb5b4fdbf/24b719cb28274e04817e5eb2003757e5/FLAGcb194f72e [2024-11-24 00:29:31,379 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:29:31,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:31,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/bb5b4fdbf/24b719cb28274e04817e5eb2003757e5/FLAGcb194f72e [2024-11-24 00:29:31,414 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/bb5b4fdbf/24b719cb28274e04817e5eb2003757e5 [2024-11-24 00:29:31,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:29:31,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:29:31,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:31,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:29:31,424 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:29:31,425 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1ccb58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31, skipping insertion in model container [2024-11-24 00:29:31,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,448 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:29:31,652 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-24 00:29:31,658 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-24 00:29:31,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:31,729 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:29:31,745 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-24 00:29:31,747 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-24 00:29:31,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:31,796 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:29:31,797 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31 WrapperNode [2024-11-24 00:29:31,797 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:31,798 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:31,798 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:29:31,798 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:29:31,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,814 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,833 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 77 [2024-11-24 00:29:31,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:31,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:29:31,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:29:31,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:29:31,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,861 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]. [2024-11-24 00:29:31,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,861 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,867 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,868 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,874 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,878 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:29:31,879 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:29:31,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:29:31,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:29:31,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (1/1) ... [2024-11-24 00:29:31,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:31,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:31,923 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:29:31,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:29:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:29:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-24 00:29:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-24 00:29:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-24 00:29:31,960 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-24 00:29:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:29:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:29:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:29:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:29:31,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:29:32,063 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:29:32,065 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:29:32,562 INFO L? ?]: Removed 60 outVars from TransFormulas that were not future-live. [2024-11-24 00:29:32,566 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:29:32,581 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:29:32,583 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:29:32,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:32 BoogieIcfgContainer [2024-11-24 00:29:32,585 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:29:32,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:29:32,588 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:29:32,595 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:29:32,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:29:31" (1/3) ... [2024-11-24 00:29:32,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c020ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:32, skipping insertion in model container [2024-11-24 00:29:32,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:31" (2/3) ... [2024-11-24 00:29:32,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63c020ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:32, skipping insertion in model container [2024-11-24 00:29:32,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:32" (3/3) ... [2024-11-24 00:29:32,599 INFO L128 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:32,616 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:29:32,619 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_4-3a.c.cil.c that has 4 procedures, 85 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:29:32,692 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:29:32,706 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;@288e45ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:29:32,707 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:29:32,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 72 states have internal predecessors, (106), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 00:29:32,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:29:32,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:32,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:32,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:32,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:32,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-11-24 00:29:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928707679] [2024-11-24 00:29:32,732 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:32,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:32,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:32,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928707679] [2024-11-24 00:29:32,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928707679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:32,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:32,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:32,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210656093] [2024-11-24 00:29:32,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:32,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:29:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:32,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:29:32,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:29:32,906 INFO L87 Difference]: Start difference. First operand has 85 states, 70 states have (on average 1.5142857142857142) internal successors, (106), 72 states have internal predecessors, (106), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2024-11-24 00:29:32,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:32,952 INFO L93 Difference]: Finished difference Result 165 states and 249 transitions. [2024-11-24 00:29:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:29:32,956 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 [2024-11-24 00:29:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:32,969 INFO L225 Difference]: With dead ends: 165 [2024-11-24 00:29:32,969 INFO L226 Difference]: Without dead ends: 78 [2024-11-24 00:29:32,973 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 [2024-11-24 00:29:32,978 INFO L435 NwaCegarLoop]: 115 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, 115 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 [2024-11-24 00:29:32,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:29:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-24 00:29:33,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2024-11-24 00:29:33,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 64 states have (on average 1.40625) internal successors, (90), 66 states have internal predecessors, (90), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:29:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 107 transitions. [2024-11-24 00:29:33,055 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 107 transitions. Word has length 7 [2024-11-24 00:29:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:33,056 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 107 transitions. [2024-11-24 00:29:33,056 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) [2024-11-24 00:29:33,056 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 107 transitions. [2024-11-24 00:29:33,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:29:33,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:33,057 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:33,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:29:33,057 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-11-24 00:29:33,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:33,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428321485] [2024-11-24 00:29:33,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:29:33,088 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:29:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:29:33,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:29:33,127 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:29:33,129 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-24 00:29:33,132 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-24 00:29:33,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:29:33,136 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-24 00:29:33,149 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:29:33,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:29:33 BoogieIcfgContainer [2024-11-24 00:29:33,157 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:29:33,157 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:29:33,157 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:29:33,158 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:29:33,160 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:32" (3/4) ... [2024-11-24 00:29:33,162 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 00:29:33,163 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:29:33,164 INFO L158 Benchmark]: Toolchain (without parser) took 1746.13ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 85.5MB in the end (delta: 6.8MB). Peak memory consumption was 5.2MB. Max. memory is 16.1GB. [2024-11-24 00:29:33,164 INFO L158 Benchmark]: CDTParser took 0.60ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:29:33,164 INFO L158 Benchmark]: CACSL2BoogieTranslator took 378.34ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 78.2MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:29:33,165 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.42ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:29:33,165 INFO L158 Benchmark]: Boogie Preprocessor took 44.57ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:29:33,165 INFO L158 Benchmark]: RCFGBuilder took 705.98ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 55.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:29:33,165 INFO L158 Benchmark]: TraceAbstraction took 569.49ms. Allocated memory is still 117.4MB. Free memory was 54.4MB in the beginning and 86.1MB in the end (delta: -31.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:29:33,166 INFO L158 Benchmark]: Witness Printer took 5.64ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 85.5MB in the end (delta: 591.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:29:33,167 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60ms. Allocated memory is still 117.4MB. Free memory is still 74.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 378.34ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 78.2MB in the end (delta: 14.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.42ms. Allocated memory is still 117.4MB. Free memory was 78.2MB in the beginning and 76.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.57ms. Allocated memory is still 117.4MB. Free memory was 76.8MB in the beginning and 74.8MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 705.98ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 55.0MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 569.49ms. Allocated memory is still 117.4MB. Free memory was 54.4MB in the beginning and 86.1MB in the end (delta: -31.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.64ms. Allocated memory is still 117.4MB. Free memory was 86.1MB in the beginning and 85.5MB in the end (delta: 591.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 40, overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L309] COND TRUE __VERIFIER_nondet_int() [L310] 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 < 1.5f) [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 4 procedures, 85 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 115 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, 115 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=85occurred 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 [2024-11-24 00:29:33,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC --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 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:29:35,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:29:35,980 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-24 00:29:35,991 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:29:35,991 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:29:36,021 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:29:36,022 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:29:36,022 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:29:36,022 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:29:36,023 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:29:36,024 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:29:36,024 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:29:36,024 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:29:36,025 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:29:36,025 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:29:36,026 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:29:36,026 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:29:36,026 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:29:36,026 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:29:36,027 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:29:36,028 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:29:36,028 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:29:36,028 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:29:36,028 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:36,028 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:36,028 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:36,029 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:36,029 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:29:36,029 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:29:36,029 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:36,030 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:29:36,030 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:29:36,031 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_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC 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 -> 3a1b0d13ed57f2c287b7c5c279f90464e92ac535bf47194a470e4f6c38d6c07a [2024-11-24 00:29:36,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:29:36,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:29:36,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:29:36,388 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:29:36,389 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:29:36,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:39,392 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/9ef1f7f9e/77fcf28becc843379d60751c5f2f712c/FLAG79bf1d282 [2024-11-24 00:29:39,621 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:29:39,621 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:39,640 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/9ef1f7f9e/77fcf28becc843379d60751c5f2f712c/FLAG79bf1d282 [2024-11-24 00:29:39,669 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/data/9ef1f7f9e/77fcf28becc843379d60751c5f2f712c [2024-11-24 00:29:39,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:29:39,673 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:29:39,676 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:39,676 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:29:39,680 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:29:39,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:39" (1/1) ... [2024-11-24 00:29:39,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7abb2a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:39, skipping insertion in model container [2024-11-24 00:29:39,684 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:29:39" (1/1) ... [2024-11-24 00:29:39,713 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:29:39,906 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-24 00:29:39,913 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-24 00:29:39,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:40,008 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:29:40,026 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[1995,2008] [2024-11-24 00:29:40,030 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_dbf105b7-478a-4028-b65c-1491b1495c48/sv-benchmarks/c/combinations/square_8+soft_float_4-3a.c.cil.c[2364,2377] [2024-11-24 00:29:40,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:29:40,090 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:29:40,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40 WrapperNode [2024-11-24 00:29:40,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:29:40,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:40,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:29:40,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:29:40,103 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,137 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 73 [2024-11-24 00:29:40,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:29:40,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:29:40,139 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:29:40,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:29:40,146 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,150 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,163 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]. [2024-11-24 00:29:40,163 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,164 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,177 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,178 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,193 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,196 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:29:40,201 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:29:40,201 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:29:40,201 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:29:40,202 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (1/1) ... [2024-11-24 00:29:40,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:29:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:40,241 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:29:40,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:29:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:29:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 00:29:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-24 00:29:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-24 00:29:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-24 00:29:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-24 00:29:40,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:29:40,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:29:40,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:29:40,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:29:40,371 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:29:40,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:29:44,939 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-24 00:29:44,939 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:29:44,949 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:29:44,949 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:29:44,950 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:44 BoogieIcfgContainer [2024-11-24 00:29:44,950 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:29:44,953 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:29:44,953 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:29:44,960 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:29:44,960 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:29:39" (1/3) ... [2024-11-24 00:29:44,961 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7d4291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:44, skipping insertion in model container [2024-11-24 00:29:44,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:29:40" (2/3) ... [2024-11-24 00:29:44,963 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c7d4291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:29:44, skipping insertion in model container [2024-11-24 00:29:44,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:44" (3/3) ... [2024-11-24 00:29:44,965 INFO L128 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_4-3a.c.cil.c [2024-11-24 00:29:44,979 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:29:44,981 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_4-3a.c.cil.c that has 4 procedures, 61 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-24 00:29:45,052 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:29:45,062 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;@23fd143a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:29:45,062 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-24 00:29:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 48 states have internal predecessors, (69), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 00:29:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:29:45,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:45,073 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:45,073 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:45,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-11-24 00:29:45,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:29:45,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [61636816] [2024-11-24 00:29:45,090 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:45,090 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 [2024-11-24 00:29:45,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:29:45,097 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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) [2024-11-24 00:29:45,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:29:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:45,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-24 00:29:45,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:45,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:29:45,584 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:29:45,585 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:29:45,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [61636816] [2024-11-24 00:29:45,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [61636816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:29:45,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:29:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:29:45,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921140544] [2024-11-24 00:29:45,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:29:45,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:29:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:29:45,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:29:45,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:29:45,613 INFO L87 Difference]: Start difference. First operand has 61 states, 46 states have (on average 1.5) internal successors, (69), 48 states have internal predecessors, (69), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2024-11-24 00:29:45,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:45,650 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2024-11-24 00:29:45,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:29:45,654 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 [2024-11-24 00:29:45,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:45,664 INFO L225 Difference]: With dead ends: 117 [2024-11-24 00:29:45,665 INFO L226 Difference]: Without dead ends: 54 [2024-11-24 00:29:45,670 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 [2024-11-24 00:29:45,674 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 [2024-11-24 00:29:45,675 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] [2024-11-24 00:29:45,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-24 00:29:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-24 00:29:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.375) internal successors, (55), 42 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:29:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-24 00:29:45,716 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 7 [2024-11-24 00:29:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:45,716 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-24 00:29:45,716 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) [2024-11-24 00:29:45,717 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-24 00:29:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 00:29:45,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:45,717 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:45,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:29:45,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:29:45,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:45,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:45,919 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-11-24 00:29:45,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:29:45,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060469993] [2024-11-24 00:29:45,919 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:45,920 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 [2024-11-24 00:29:45,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/mathsat [2024-11-24 00:29:45,922 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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) [2024-11-24 00:29:45,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:30:54,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:30:54,454 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:30:54,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:31:03,082 WARN L286 SmtUtils]: Spent 8.19s 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) [2024-11-24 00:31:11,184 WARN L286 SmtUtils]: Spent 8.10s 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) [2024-11-24 00:31:19,397 WARN L286 SmtUtils]: Spent 8.21s 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) [2024-11-24 00:31:23,468 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 [2024-11-24 00:31:39,797 WARN L286 SmtUtils]: Spent 8.19s 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) [2024-11-24 00:31:47,994 WARN L286 SmtUtils]: Spent 8.20s 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) [2024-11-24 00:31:56,097 WARN L286 SmtUtils]: Spent 8.10s 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) [2024-11-24 00:32:08,338 WARN L286 SmtUtils]: Spent 8.19s 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) [2024-11-24 00:32:14,959 WARN L286 SmtUtils]: Spent 6.62s 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) [2024-11-24 00:32:23,063 WARN L286 SmtUtils]: Spent 8.10s 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) [2024-11-24 00:32:27,157 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 (/ 3.0 2.0)))))) (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 [2024-11-24 00:32:31,200 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 (/ 3.0 2.0)))))) (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 [2024-11-24 00:32:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:32:31,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:32:31,201 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:31,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060469993] [2024-11-24 00:32:31,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060469993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:32:31,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:32:31,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:32:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314953275] [2024-11-24 00:32:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:32:31,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:32:31,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:31,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:32:31,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-24 00:32:31,204 INFO L87 Difference]: Start difference. First operand 54 states and 72 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) [2024-11-24 00:32:35,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:32:39,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:32:43,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-24 00:32:43,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:43,994 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2024-11-24 00:32:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:32:43,995 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 [2024-11-24 00:32:43,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:43,996 INFO L225 Difference]: With dead ends: 54 [2024-11-24 00:32:43,996 INFO L226 Difference]: Without dead ends: 49 [2024-11-24 00:32:43,996 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-24 00:32:43,997 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 66 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:43,998 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 165 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 3 Unknown, 144 Unchecked, 12.8s Time] [2024-11-24 00:32:43,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-24 00:32:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-11-24 00:32:44,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3888888888888888) internal successors, (50), 37 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-24 00:32:44,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2024-11-24 00:32:44,006 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 7 [2024-11-24 00:32:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:44,006 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2024-11-24 00:32:44,006 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) [2024-11-24 00:32:44,006 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2024-11-24 00:32:44,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-24 00:32:44,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:44,008 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:32:44,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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)] Forceful destruction successful, exit code 0 [2024-11-24 00:32:44,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/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 [2024-11-24 00:32:44,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:44,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:44,209 INFO L85 PathProgramCache]: Analyzing trace with hash -734027065, now seen corresponding path program 1 times [2024-11-24 00:32:44,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:44,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1163442948] [2024-11-24 00:32:44,209 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:44,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:44,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:44,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:44,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:32:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:44,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:32:44,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:45,249 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:32:45,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:32:45,697 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:32:45,697 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:45,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1163442948] [2024-11-24 00:32:45,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1163442948] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:32:45,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:32:45,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-24 00:32:45,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626791039] [2024-11-24 00:32:45,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:32:45,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:32:45,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:45,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:32:45,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:32:45,703 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:32:46,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:46,700 INFO L93 Difference]: Finished difference Result 98 states and 136 transitions. [2024-11-24 00:32:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:32:46,701 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 32 [2024-11-24 00:32:46,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:46,703 INFO L225 Difference]: With dead ends: 98 [2024-11-24 00:32:46,703 INFO L226 Difference]: Without dead ends: 70 [2024-11-24 00:32:46,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:32:46,705 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 14 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:46,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 472 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:32:46,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-24 00:32:46,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2024-11-24 00:32:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 47 states have internal predecessors, (60), 11 states have call successors, (11), 4 states have call predecessors, (11), 5 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-24 00:32:46,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 85 transitions. [2024-11-24 00:32:46,717 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 85 transitions. Word has length 32 [2024-11-24 00:32:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:46,718 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 85 transitions. [2024-11-24 00:32:46,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:32:46,718 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2024-11-24 00:32:46,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:32:46,719 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:46,720 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:32:46,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:32:46,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:46,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:46,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:46,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1612883011, now seen corresponding path program 1 times [2024-11-24 00:32:46,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:46,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851305193] [2024-11-24 00:32:46,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:46,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:46,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:46,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:46,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:32:46,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:46,987 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:32:46,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:48,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 00:32:48,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:32:50,038 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:32:50,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851305193] [2024-11-24 00:32:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851305193] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:32:50,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:32:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 16 [2024-11-24 00:32:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367831736] [2024-11-24 00:32:50,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:32:50,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:32:50,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:50,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:32:50,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:32:50,042 INFO L87 Difference]: Start difference. First operand 62 states and 85 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:50,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:50,887 INFO L93 Difference]: Finished difference Result 126 states and 171 transitions. [2024-11-24 00:32:50,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:32:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-24 00:32:50,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:50,890 INFO L225 Difference]: With dead ends: 126 [2024-11-24 00:32:50,890 INFO L226 Difference]: Without dead ends: 94 [2024-11-24 00:32:50,891 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:32:50,892 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:50,892 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 500 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:32:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-24 00:32:50,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2024-11-24 00:32:50,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 65 states have internal predecessors, (82), 16 states have call successors, (16), 6 states have call predecessors, (16), 7 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-24 00:32:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2024-11-24 00:32:50,907 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 35 [2024-11-24 00:32:50,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:50,908 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2024-11-24 00:32:50,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:50,908 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2024-11-24 00:32:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-24 00:32:50,909 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:50,909 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:32:50,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:32:51,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:51,110 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:51,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:51,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1670141313, now seen corresponding path program 1 times [2024-11-24 00:32:51,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:51,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1034397521] [2024-11-24 00:32:51,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:51,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:51,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:51,114 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:51,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:32:51,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:51,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:32:51,165 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:32:51,910 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:32:51,910 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:51,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034397521] [2024-11-24 00:32:51,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034397521] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:32:51,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:32:51,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 00:32:51,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651259385] [2024-11-24 00:32:51,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:32:51,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:32:51,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:51,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:32:51,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:32:51,912 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:52,521 INFO L93 Difference]: Finished difference Result 125 states and 167 transitions. [2024-11-24 00:32:52,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:32:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-24 00:32:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:52,523 INFO L225 Difference]: With dead ends: 125 [2024-11-24 00:32:52,524 INFO L226 Difference]: Without dead ends: 85 [2024-11-24 00:32:52,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:32:52,525 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 12 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:52,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 419 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:32:52,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-24 00:32:52,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 70. [2024-11-24 00:32:52,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 53 states have internal predecessors, (66), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2024-11-24 00:32:52,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2024-11-24 00:32:52,541 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 35 [2024-11-24 00:32:52,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:52,541 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2024-11-24 00:32:52,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:52,542 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2024-11-24 00:32:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:32:52,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:52,543 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:32:52,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:32:52,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:52,744 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:52,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:52,744 INFO L85 PathProgramCache]: Analyzing trace with hash -519373183, now seen corresponding path program 2 times [2024-11-24 00:32:52,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:52,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1733739320] [2024-11-24 00:32:52,745 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:32:52,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:52,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:52,746 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:52,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:32:52,795 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:32:52,796 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:32:52,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:32:52,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:32:54,441 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:32:54,441 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:54,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733739320] [2024-11-24 00:32:54,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733739320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:32:54,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:32:54,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 00:32:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990903302] [2024-11-24 00:32:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:32:54,443 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 00:32:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:54,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 00:32:54,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:32:54,444 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:57,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:57,218 INFO L93 Difference]: Finished difference Result 145 states and 194 transitions. [2024-11-24 00:32:57,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:32:57,219 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:32:57,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:57,222 INFO L225 Difference]: With dead ends: 145 [2024-11-24 00:32:57,224 INFO L226 Difference]: Without dead ends: 113 [2024-11-24 00:32:57,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:32:57,225 INFO L435 NwaCegarLoop]: 99 mSDtfsCounter, 38 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:57,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 1006 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-24 00:32:57,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-24 00:32:57,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2024-11-24 00:32:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.2666666666666666) internal successors, (95), 78 states have internal predecessors, (95), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (24), 16 states have call predecessors, (24), 16 states have call successors, (24) [2024-11-24 00:32:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 136 transitions. [2024-11-24 00:32:57,254 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 136 transitions. Word has length 38 [2024-11-24 00:32:57,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:57,254 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 136 transitions. [2024-11-24 00:32:57,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:32:57,254 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 136 transitions. [2024-11-24 00:32:57,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:32:57,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:57,256 INFO L218 NwaCegarLoop]: trace histogram [3, 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] [2024-11-24 00:32:57,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:32:57,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:57,460 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:57,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:57,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1004058821, now seen corresponding path program 1 times [2024-11-24 00:32:57,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:57,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2018255060] [2024-11-24 00:32:57,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:57,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:57,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:57,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:57,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:32:57,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:57,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:32:57,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:32:58,212 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:32:58,212 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:32:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:32:58,611 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:32:58,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018255060] [2024-11-24 00:32:58,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018255060] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:32:58,612 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:32:58,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-24 00:32:58,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088245098] [2024-11-24 00:32:58,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:32:58,612 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:32:58,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:32:58,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:32:58,613 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:32:58,613 INFO L87 Difference]: Start difference. First operand 103 states and 136 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:32:59,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:32:59,574 INFO L93 Difference]: Finished difference Result 205 states and 275 transitions. [2024-11-24 00:32:59,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:32:59,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-24 00:32:59,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:32:59,577 INFO L225 Difference]: With dead ends: 205 [2024-11-24 00:32:59,578 INFO L226 Difference]: Without dead ends: 160 [2024-11-24 00:32:59,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:32:59,579 INFO L435 NwaCegarLoop]: 104 mSDtfsCounter, 34 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:32:59,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 665 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:32:59,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-24 00:32:59,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 139. [2024-11-24 00:32:59,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 100 states have (on average 1.27) internal successors, (127), 103 states have internal predecessors, (127), 26 states have call successors, (26), 10 states have call predecessors, (26), 12 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:32:59,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 188 transitions. [2024-11-24 00:32:59,610 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 188 transitions. Word has length 38 [2024-11-24 00:32:59,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:32:59,611 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 188 transitions. [2024-11-24 00:32:59,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:32:59,611 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 188 transitions. [2024-11-24 00:32:59,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:32:59,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:32:59,613 INFO L218 NwaCegarLoop]: trace histogram [3, 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] [2024-11-24 00:32:59,624 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:32:59,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:59,818 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:32:59,818 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:32:59,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1061317123, now seen corresponding path program 1 times [2024-11-24 00:32:59,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:32:59,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029598332] [2024-11-24 00:32:59,818 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:32:59,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:32:59,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:32:59,820 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:32:59,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:32:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:32:59,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:32:59,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:33:01,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:33:04,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:33:04,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029598332] [2024-11-24 00:33:04,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029598332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:33:04,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [297203462] [2024-11-24 00:33:04,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:04,310 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 00:33:04,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 00:33:04,312 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 00:33:04,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-24 00:33:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:04,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:33:04,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:33:04,881 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:33:05,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [297203462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:33:05,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:33:05,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-24 00:33:05,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612353912] [2024-11-24 00:33:05,151 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:33:05,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 00:33:05,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:33:05,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 00:33:05,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:33:05,153 INFO L87 Difference]: Start difference. First operand 139 states and 188 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:33:07,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:07,222 INFO L93 Difference]: Finished difference Result 170 states and 220 transitions. [2024-11-24 00:33:07,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 00:33:07,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-24 00:33:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:07,225 INFO L225 Difference]: With dead ends: 170 [2024-11-24 00:33:07,225 INFO L226 Difference]: Without dead ends: 168 [2024-11-24 00:33:07,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:33:07,230 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 36 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:07,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 949 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 00:33:07,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-24 00:33:07,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 147. [2024-11-24 00:33:07,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 106 states have (on average 1.2547169811320755) internal successors, (133), 109 states have internal predecessors, (133), 26 states have call successors, (26), 12 states have call predecessors, (26), 14 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:33:07,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 194 transitions. [2024-11-24 00:33:07,265 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 194 transitions. Word has length 38 [2024-11-24 00:33:07,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:07,266 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 194 transitions. [2024-11-24 00:33:07,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-24 00:33:07,266 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 194 transitions. [2024-11-24 00:33:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:33:07,272 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:07,272 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:07,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:33:07,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-24 00:33:07,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 00:33:07,673 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:07,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:07,674 INFO L85 PathProgramCache]: Analyzing trace with hash -251302391, now seen corresponding path program 1 times [2024-11-24 00:33:07,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:33:07,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1186092730] [2024-11-24 00:33:07,674 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:07,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:07,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:07,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:33:07,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:33:07,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:07,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:33:07,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:08,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:33:08,341 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:33:08,341 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:33:08,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186092730] [2024-11-24 00:33:08,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186092730] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:33:08,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:33:08,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:33:08,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841913077] [2024-11-24 00:33:08,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:33:08,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:33:08,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:33:08,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:33:08,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:33:08,343 INFO L87 Difference]: Start difference. First operand 147 states and 194 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:33:09,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:09,102 INFO L93 Difference]: Finished difference Result 163 states and 211 transitions. [2024-11-24 00:33:09,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:33:09,103 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:33:09,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:09,105 INFO L225 Difference]: With dead ends: 163 [2024-11-24 00:33:09,105 INFO L226 Difference]: Without dead ends: 161 [2024-11-24 00:33:09,105 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:33:09,106 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 3 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:09,106 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 298 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:33:09,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-24 00:33:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 153. [2024-11-24 00:33:09,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 110 states have (on average 1.2545454545454546) internal successors, (138), 114 states have internal predecessors, (138), 27 states have call successors, (27), 13 states have call predecessors, (27), 15 states have return successors, (36), 25 states have call predecessors, (36), 26 states have call successors, (36) [2024-11-24 00:33:09,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 201 transitions. [2024-11-24 00:33:09,149 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 201 transitions. Word has length 38 [2024-11-24 00:33:09,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:09,150 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 201 transitions. [2024-11-24 00:33:09,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:33:09,151 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 201 transitions. [2024-11-24 00:33:09,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:33:09,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:09,152 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:09,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:33:09,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:09,352 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:09,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash -194044089, now seen corresponding path program 1 times [2024-11-24 00:33:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:33:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966357263] [2024-11-24 00:33:09,353 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:09,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:09,357 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:33:09,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:33:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:09,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:33:09,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-24 00:33:10,040 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:33:10,040 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:33:10,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966357263] [2024-11-24 00:33:10,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966357263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:33:10,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:33:10,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:33:10,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997798113] [2024-11-24 00:33:10,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:33:10,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:33:10,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:33:10,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:33:10,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:33:10,042 INFO L87 Difference]: Start difference. First operand 153 states and 201 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:33:10,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:10,720 INFO L93 Difference]: Finished difference Result 159 states and 206 transitions. [2024-11-24 00:33:10,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:33:10,721 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2024-11-24 00:33:10,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:10,723 INFO L225 Difference]: With dead ends: 159 [2024-11-24 00:33:10,723 INFO L226 Difference]: Without dead ends: 157 [2024-11-24 00:33:10,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:33:10,724 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 3 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:10,724 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 293 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:33:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-24 00:33:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2024-11-24 00:33:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 109 states have (on average 1.2477064220183487) internal successors, (136), 112 states have internal predecessors, (136), 26 states have call successors, (26), 13 states have call predecessors, (26), 15 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-24 00:33:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 197 transitions. [2024-11-24 00:33:10,746 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 197 transitions. Word has length 38 [2024-11-24 00:33:10,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:10,746 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 197 transitions. [2024-11-24 00:33:10,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:33:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 197 transitions. [2024-11-24 00:33:10,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 00:33:10,748 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:10,748 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 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] [2024-11-24 00:33:10,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 00:33:10,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:10,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:10,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:10,949 INFO L85 PathProgramCache]: Analyzing trace with hash -615244136, now seen corresponding path program 1 times [2024-11-24 00:33:10,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:33:10,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800306517] [2024-11-24 00:33:10,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:10,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:10,951 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:33:10,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:33:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:33:11,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-24 00:33:11,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:33:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:33:13,933 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:33:20,161 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:33:20,161 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 00:33:20,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800306517] [2024-11-24 00:33:20,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800306517] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:33:20,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:33:20,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 27 [2024-11-24 00:33:20,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76620510] [2024-11-24 00:33:20,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:33:20,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 00:33:20,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 00:33:20,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 00:33:20,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:33:20,164 INFO L87 Difference]: Start difference. First operand 151 states and 197 transitions. Second operand has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-24 00:33:27,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:33:27,585 INFO L93 Difference]: Finished difference Result 247 states and 328 transitions. [2024-11-24 00:33:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:33:27,586 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 44 [2024-11-24 00:33:27,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:33:27,588 INFO L225 Difference]: With dead ends: 247 [2024-11-24 00:33:27,588 INFO L226 Difference]: Without dead ends: 219 [2024-11-24 00:33:27,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=117, Invalid=1073, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:33:27,590 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 58 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:33:27,590 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 1810 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-24 00:33:27,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-24 00:33:27,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2024-11-24 00:33:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 143 states have (on average 1.2517482517482517) internal successors, (179), 148 states have internal predecessors, (179), 39 states have call successors, (39), 17 states have call predecessors, (39), 19 states have return successors, (48), 36 states have call predecessors, (48), 38 states have call successors, (48) [2024-11-24 00:33:27,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2024-11-24 00:33:27,626 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 44 [2024-11-24 00:33:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:33:27,627 INFO L471 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2024-11-24 00:33:27,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 8 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-24 00:33:27,627 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2024-11-24 00:33:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-24 00:33:27,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:33:27,628 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 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] [2024-11-24 00:33:27,637 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:33:27,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:27,833 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:33:27,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:33:27,833 INFO L85 PathProgramCache]: Analyzing trace with hash 2090210780, now seen corresponding path program 1 times [2024-11-24 00:33:27,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 00:33:27,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1576584225] [2024-11-24 00:33:27,834 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:33:27,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:27,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:33:27,836 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:33:27,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:33:27,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:33:27,893 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:33:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:33:27,940 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 00:33:27,944 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:33:27,945 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-24 00:33:27,946 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-24 00:33:27,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 00:33:28,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:33:28,152 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:33:28,206 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:33:28,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:33:28 BoogieIcfgContainer [2024-11-24 00:33:28,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:33:28,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:33:28,214 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:33:28,214 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:33:28,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:29:44" (3/4) ... [2024-11-24 00:33:28,215 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 00:33:28,293 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 25. [2024-11-24 00:33:28,356 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:33:28,357 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:33:28,357 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:33:28,357 INFO L158 Benchmark]: Toolchain (without parser) took 228684.86ms. Allocated memory is still 83.9MB. Free memory was 60.3MB in the beginning and 32.7MB in the end (delta: 27.6MB). Peak memory consumption was 23.0MB. Max. memory is 16.1GB. [2024-11-24 00:33:28,358 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:33:28,358 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.80ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 45.6MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:33:28,358 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.17ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 44.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:33:28,359 INFO L158 Benchmark]: Boogie Preprocessor took 61.09ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:33:28,359 INFO L158 Benchmark]: RCFGBuilder took 4748.96ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 25.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:33:28,359 INFO L158 Benchmark]: TraceAbstraction took 223258.51ms. Allocated memory is still 83.9MB. Free memory was 25.3MB in the beginning and 38.5MB in the end (delta: -13.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:33:28,359 INFO L158 Benchmark]: Witness Printer took 143.30ms. Allocated memory is still 83.9MB. Free memory was 38.5MB in the beginning and 32.7MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:33:28,361 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 83.9MB. Free memory is still 63.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.80ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 45.6MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.17ms. Allocated memory is still 83.9MB. Free memory was 45.6MB in the beginning and 44.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.09ms. Allocated memory is still 83.9MB. Free memory was 44.0MB in the beginning and 41.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4748.96ms. Allocated memory is still 83.9MB. Free memory was 41.9MB in the beginning and 25.6MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 223258.51ms. Allocated memory is still 83.9MB. Free memory was 25.3MB in the beginning and 38.5MB in the end (delta: -13.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 143.30ms. Allocated memory is still 83.9MB. Free memory was 38.5MB in the beginning and 32.7MB in the end (delta: 5.8MB). 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 - CounterExampleResult [Line: 60]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L309] COND FALSE !(__VERIFIER_nondet_int()) [L312] CALL main2() [L269] unsigned int a ; [L270] unsigned int ma = __VERIFIER_nondet_uint(); [L271] signed char ea = __VERIFIER_nondet_char(); [L272] unsigned int b ; [L273] unsigned int mb = __VERIFIER_nondet_uint(); [L274] signed char eb = __VERIFIER_nondet_char(); [L275] unsigned int r_add1 ; [L276] unsigned int r_add2 ; [L277] unsigned int zero ; [L278] int tmp ; [L279] int tmp___0 ; [L280] int __retres14 ; [L284] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L72] COND TRUE ! m [L73] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0] [L123] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, e=0] [L284] RET, EXPR base2flt(0, 0) [L284] zero = base2flt(0, 0) [L285] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=127, \old(m)=67108864] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L72] COND FALSE !(! m) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L102] COND TRUE m >= 1U << 25U VAL [\old(e)=127, \old(m)=67108864, e=127, m=67108864] [L107] COND TRUE e >= 127 [L108] __retres4 = 4294967295U VAL [\old(e)=127, \old(m)=67108864, __retres4=-1, m=67108864] [L123] return (__retres4); VAL [\old(e)=127, \old(m)=67108864, \result=-1, m=67108864] [L285] RET, EXPR base2flt(ma, ea) VAL [ea=127, ma=67108864] [L285] a = base2flt(ma, ea) [L286] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-16, \old(m)=16777216] [L68] unsigned int res ; [L69] unsigned int __retres4 ; VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L72] COND FALSE !(! m) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L78] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L102] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-16, \old(m)=16777216, e=-16, m=16777216] [L119] m = m & ~ (1U << 24U) [L120] res = m | ((unsigned int )(e + 128) << 24U) [L121] __retres4 = res VAL [\old(e)=-16, \old(m)=16777216, __retres4=1879048192] [L123] return (__retres4); VAL [\old(e)=-16, \old(m)=16777216, \result=1879048192] [L286] RET, EXPR base2flt(mb, eb) VAL [a=-1, ea=127, eb=-16, ma=67108864, mb=16777216] [L286] b = base2flt(mb, eb) [L287] CALL addflt(a, b) VAL [\old(a)=-1, \old(b)=1879048192] [L127] unsigned int res ; [L128] unsigned int ma ; [L129] unsigned int mb ; [L130] unsigned int delta ; [L131] int ea ; [L132] int eb ; [L133] unsigned int tmp ; [L134] unsigned int __retres10 ; VAL [\old(a)=-1, \old(b)=1879048192, a=-1, b=1879048192] [L137] COND FALSE !(a < b) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, b=1879048192] [L144] COND FALSE !(! b) [L151] ma = a & ((1U << 24U) - 1U) [L152] ea = (int )(a >> 24U) - 128 [L153] ma = ma | (1U << 24U) [L154] mb = b & ((1U << 24U) - 1U) [L155] eb = (int )(b >> 24U) - 128 [L156] mb = mb | (1U << 24U) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L157] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L59] COND FALSE !(!(cond)) VAL [\old(cond)=1] [L157] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=-1, \old(b)=1879048192, a=-1, ea=127, eb=-16, ma=33554431, mb=16777216] [L158] delta = ea - eb VAL [\old(a)=-1, \old(b)=1879048192, a=-1, delta=143, ea=127, ma=33554431, mb=16777216] [L159] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L59] COND TRUE !(cond) VAL [\old(cond)=0] [L60] reach_error() VAL [\old(cond)=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: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 223.1s, OverallIterations: 12, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 30.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 315 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 287 mSDsluCounter, 6657 SdHoareTripleChecker+Invalid, 24.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 144 IncrementalHoareTripleChecker+Unchecked, 5771 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1232 IncrementalHoareTripleChecker+Invalid, 1422 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 886 mSDtfsCounter, 1232 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 566 GetRequests, 445 SyntacticMatches, 1 SemanticMatches, 120 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 34.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=11, InterpolantAutomatonStates: 104, 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, 11 MinimizatonAttempts, 113 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 69.0s SatisfiabilityAnalysisTime, 120.3s InterpolantComputationTime, 432 NumberOfCodeBlocks, 415 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 521 ConstructedInterpolants, 10 QuantifiedInterpolants, 1531 SizeOfPredicates, 25 NumberOfNonLiveVariables, 761 ConjunctsInSsa, 114 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 214/237 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 proved your program to be incorrect! [2024-11-24 00:33:28,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbf105b7-478a-4028-b65c-1491b1495c48/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE