./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:39:05,208 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:39:05,263 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 07:39:05,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:39:05,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:39:05,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:39:05,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:39:05,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:39:05,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:39:05,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:39:05,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:39:05,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:39:05,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:39:05,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:39:05,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:39:05,292 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:39:05,292 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:05,293 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:05,293 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:39:05,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:39:05,294 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:39:05,294 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-12-02 07:39:05,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:39:05,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:39:05,515 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:39:05,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:39:05,517 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:39:05,518 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:08,167 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/7e3de6918/b0572cee3e4b4559a64bc654b10f268c/FLAG6eb48e7a4 [2024-12-02 07:39:08,362 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:39:08,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:08,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/7e3de6918/b0572cee3e4b4559a64bc654b10f268c/FLAG6eb48e7a4 [2024-12-02 07:39:08,732 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/7e3de6918/b0572cee3e4b4559a64bc654b10f268c [2024-12-02 07:39:08,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:39:08,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:39:08,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:39:08,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:39:08,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:39:08,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:08" (1/1) ... [2024-12-02 07:39:08,739 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6043b832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:08, skipping insertion in model container [2024-12-02 07:39:08,740 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:08" (1/1) ... [2024-12-02 07:39:08,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:39:08,916 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-12-02 07:39:08,922 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-12-02 07:39:08,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:39:08,975 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:39:08,989 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-12-02 07:39:08,991 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-12-02 07:39:09,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:39:09,034 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:39:09,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09 WrapperNode [2024-12-02 07:39:09,035 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:39:09,036 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:39:09,036 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:39:09,036 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:39:09,042 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,050 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,073 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-12-02 07:39:09,073 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:39:09,074 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:39:09,074 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:39:09,074 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:39:09,084 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,100 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]. [2024-12-02 07:39:09,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,107 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,113 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,117 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:39:09,118 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:39:09,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:39:09,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:39:09,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (1/1) ... [2024-12-02 07:39:09,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:09,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:39:09,152 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:39:09,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:39:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:39:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 07:39:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 07:39:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:39:09,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:39:09,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:39:09,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:39:09,185 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:39:09,267 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:39:09,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:39:09,628 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-12-02 07:39:09,628 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:39:09,639 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:39:09,639 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 07:39:09,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:09 BoogieIcfgContainer [2024-12-02 07:39:09,640 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:39:09,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:39:09,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:39:09,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:39:09,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:39:08" (1/3) ... [2024-12-02 07:39:09,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8d0c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:09, skipping insertion in model container [2024-12-02 07:39:09,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:09" (2/3) ... [2024-12-02 07:39:09,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b8d0c4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:09, skipping insertion in model container [2024-12-02 07:39:09,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:09" (3/3) ... [2024-12-02 07:39:09,650 INFO L128 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:09,662 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:39:09,664 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 82 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:39:09,712 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:39:09,725 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;@452556ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:39:09,725 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:39:09,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 07:39:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:39:09,734 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:39:09,734 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:39:09,734 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:39:09,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:39:09,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1530844763, now seen corresponding path program 1 times [2024-12-02 07:39:09,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:39:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086161120] [2024-12-02 07:39:09,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:39:09,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:39:09,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:39:09,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:39:09,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:39:09,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086161120] [2024-12-02 07:39:09,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086161120] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:39:09,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:39:09,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:39:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854644070] [2024-12-02 07:39:09,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:39:09,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:39:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:39:09,880 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:39:09,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:39:09,883 INFO L87 Difference]: Start difference. First operand has 82 states, 72 states have (on average 1.5555555555555556) internal successors, (112), 75 states have internal predecessors, (112), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:39:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:39:09,907 INFO L93 Difference]: Finished difference Result 159 states and 241 transitions. [2024-12-02 07:39:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:39:09,908 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 [2024-12-02 07:39:09,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:39:09,915 INFO L225 Difference]: With dead ends: 159 [2024-12-02 07:39:09,915 INFO L226 Difference]: Without dead ends: 73 [2024-12-02 07:39:09,919 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 [2024-12-02 07:39:09,922 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:39:09,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:39:09,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2024-12-02 07:39:09,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2024-12-02 07:39:09,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 65 states have (on average 1.4307692307692308) internal successors, (93), 66 states have internal predecessors, (93), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 07:39:09,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 102 transitions. [2024-12-02 07:39:09,954 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 102 transitions. Word has length 7 [2024-12-02 07:39:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:39:09,954 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 102 transitions. [2024-12-02 07:39:09,954 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) [2024-12-02 07:39:09,955 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 102 transitions. [2024-12-02 07:39:09,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:39:09,955 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:39:09,955 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:39:09,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:39:09,955 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:39:09,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:39:09,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1530904345, now seen corresponding path program 1 times [2024-12-02 07:39:09,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:39:09,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001329207] [2024-12-02 07:39:09,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:39:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:39:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:39:09,969 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:39:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:39:09,988 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:39:09,988 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:39:09,990 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-12-02 07:39:09,992 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 07:39:09,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:39:09,995 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 07:39:10,005 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:39:10,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:39:10 BoogieIcfgContainer [2024-12-02 07:39:10,008 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:39:10,008 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:39:10,008 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:39:10,008 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:39:10,009 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:09" (3/4) ... [2024-12-02 07:39:10,011 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 07:39:10,011 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:39:10,012 INFO L158 Benchmark]: Toolchain (without parser) took 1277.36ms. Allocated memory is still 142.6MB. Free memory was 116.5MB in the beginning and 55.8MB in the end (delta: 60.7MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2024-12-02 07:39:10,012 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 70.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:39:10,012 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.07ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 102.0MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:39:10,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.49ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 100.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:39:10,013 INFO L158 Benchmark]: Boogie Preprocessor took 43.50ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:39:10,013 INFO L158 Benchmark]: RCFGBuilder took 521.86ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 77.8MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-12-02 07:39:10,014 INFO L158 Benchmark]: TraceAbstraction took 365.41ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 55.8MB in the end (delta: 21.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:39:10,014 INFO L158 Benchmark]: Witness Printer took 3.03ms. Allocated memory is still 142.6MB. Free memory is still 55.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:39:10,016 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 117.4MB. Free memory was 71.1MB in the beginning and 70.9MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.07ms. Allocated memory is still 142.6MB. Free memory was 116.2MB in the beginning and 102.0MB in the end (delta: 14.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.49ms. Allocated memory is still 142.6MB. Free memory was 102.0MB in the beginning and 100.1MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.50ms. Allocated memory is still 142.6MB. Free memory was 100.1MB in the beginning and 98.1MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 521.86ms. Allocated memory is still 142.6MB. Free memory was 98.1MB in the beginning and 77.8MB in the end (delta: 20.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 365.41ms. Allocated memory is still 142.6MB. Free memory was 77.2MB in the beginning and 55.8MB in the end (delta: 21.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 3.03ms. Allocated memory is still 142.6MB. Free memory is still 55.8MB. 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 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.39844f) [L48] reach_error() - UnprovableResult [Line: 60]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 82 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 113 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 113 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-12-02 07:39:10,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:39:12,011 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:39:12,084 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-12-02 07:39:12,090 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:39:12,091 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:39:12,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:39:12,114 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:39:12,114 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:39:12,114 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:39:12,114 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:39:12,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:39:12,115 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:39:12,115 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:39:12,115 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:39:12,115 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:39:12,115 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:39:12,115 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 07:39:12,115 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:39:12,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:39:12,117 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:12,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:12,117 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:39:12,117 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:39:12,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:39:12,118 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-12-02 07:39:12,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:39:12,372 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:39:12,375 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:39:12,377 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:39:12,377 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:39:12,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:15,213 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/a71d1489b/471cc25c6d4f47ae824e6ec7ba8dec80/FLAG46f71ed09 [2024-12-02 07:39:15,400 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:39:15,401 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:15,410 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/a71d1489b/471cc25c6d4f47ae824e6ec7ba8dec80/FLAG46f71ed09 [2024-12-02 07:39:15,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/data/a71d1489b/471cc25c6d4f47ae824e6ec7ba8dec80 [2024-12-02 07:39:15,762 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:39:15,763 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:39:15,764 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:39:15,764 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:39:15,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:39:15,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:15,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f93812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15, skipping insertion in model container [2024-12-02 07:39:15,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:15,783 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:39:15,898 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-12-02 07:39:15,901 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-12-02 07:39:15,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:39:15,944 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:39:15,955 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-12-02 07:39:15,956 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_b018d8b7-ffa2-4ac6-a938-14e6c38be252/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-12-02 07:39:15,975 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:39:15,987 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:39:15,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15 WrapperNode [2024-12-02 07:39:15,988 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:39:15,988 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:39:15,988 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:39:15,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:39:15,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,020 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-12-02 07:39:16,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:39:16,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:39:16,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:39:16,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:39:16,028 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,029 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,031 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,042 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]. [2024-12-02 07:39:16,042 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,043 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,050 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,057 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,058 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,061 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:39:16,062 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:39:16,062 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:39:16,062 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:39:16,063 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (1/1) ... [2024-12-02 07:39:16,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:39:16,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:39:16,093 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:39:16,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:39:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:39:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 07:39:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-12-02 07:39:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-12-02 07:39:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:39:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:39:16,115 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 07:39:16,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 07:39:16,175 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:39:16,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:39:20,671 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-12-02 07:39:20,671 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:39:20,682 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:39:20,683 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 07:39:20,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:20 BoogieIcfgContainer [2024-12-02 07:39:20,683 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:39:20,685 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:39:20,686 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:39:20,690 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:39:20,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:39:15" (1/3) ... [2024-12-02 07:39:20,691 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:20, skipping insertion in model container [2024-12-02 07:39:20,691 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:39:15" (2/3) ... [2024-12-02 07:39:20,692 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5043753a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:39:20, skipping insertion in model container [2024-12-02 07:39:20,692 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:20" (3/3) ... [2024-12-02 07:39:20,693 INFO L128 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-12-02 07:39:20,707 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:39:20,708 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 59 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 07:39:20,743 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:39:20,751 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;@4927510e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:39:20,751 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-02 07:39:20,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 52 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-12-02 07:39:20,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:39:20,758 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:39:20,759 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:39:20,759 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:39:20,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:39:20,763 INFO L85 PathProgramCache]: Analyzing trace with hash 78502818, now seen corresponding path program 1 times [2024-12-02 07:39:20,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:39:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99031290] [2024-12-02 07:39:20,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:39:20,771 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 [2024-12-02 07:39:20,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:39:20,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 07:39:20,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:39:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:39:21,201 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 07:39:21,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:39:21,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:39:21,216 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:39:21,216 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:39:21,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99031290] [2024-12-02 07:39:21,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [99031290] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:39:21,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:39:21,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:39:21,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762485433] [2024-12-02 07:39:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:39:21,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:39:21,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:39:21,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:39:21,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:39:21,236 INFO L87 Difference]: Start difference. First operand has 59 states, 49 states have (on average 1.5714285714285714) internal successors, (77), 52 states have internal predecessors, (77), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:39:21,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:39:21,252 INFO L93 Difference]: Finished difference Result 113 states and 171 transitions. [2024-12-02 07:39:21,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:39:21,253 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 [2024-12-02 07:39:21,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:39:21,258 INFO L225 Difference]: With dead ends: 113 [2024-12-02 07:39:21,258 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 07:39:21,260 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 [2024-12-02 07:39:21,262 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 [2024-12-02 07:39:21,263 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] [2024-12-02 07:39:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 07:39:21,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-12-02 07:39:21,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4285714285714286) internal successors, (60), 43 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 07:39:21,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2024-12-02 07:39:21,288 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 7 [2024-12-02 07:39:21,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:39:21,289 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2024-12-02 07:39:21,289 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) [2024-12-02 07:39:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2024-12-02 07:39:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-12-02 07:39:21,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:39:21,289 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:39:21,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:39:21,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:39:21,490 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:39:21,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:39:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash 78562400, now seen corresponding path program 1 times [2024-12-02 07:39:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:39:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189076775] [2024-12-02 07:39:21,491 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:39:21,491 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 [2024-12-02 07:39:21,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/mathsat [2024-12-02 07:39:21,493 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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) [2024-12-02 07:39:21,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:46:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:46:14,178 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:46:14,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:46:22,722 WARN L286 SmtUtils]: Spent 8.18s 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) [2024-12-02 07:46:30,829 WARN L286 SmtUtils]: Spent 8.11s 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) [2024-12-02 07:46:39,014 WARN L286 SmtUtils]: Spent 8.18s 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) [2024-12-02 07:46:43,083 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 [2024-12-02 07:46:59,410 WARN L286 SmtUtils]: Spent 8.21s 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) [2024-12-02 07:47:07,143 WARN L286 SmtUtils]: Spent 7.73s 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) [2024-12-02 07:47:15,242 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) [2024-12-02 07:47:27,480 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) [2024-12-02 07:47:35,684 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) [2024-12-02 07:47:43,789 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) [2024-12-02 07:47:47,891 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-12-02 07:47:51,933 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-12-02 07:47:51,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:47:51,933 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:47:51,933 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:47:51,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189076775] [2024-12-02 07:47:51,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189076775] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:47:51,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:47:51,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:47:51,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020161936] [2024-12-02 07:47:51,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:47:51,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:47:51,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:47:51,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:47:51,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-12-02 07:47:51,936 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:47:56,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 07:48:00,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-12-02 07:48:04,172 WARN L539 Checker$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 [] [2024-12-02 07:48:04,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:04,464 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2024-12-02 07:48:04,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:48:04,465 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 [2024-12-02 07:48:04,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:04,465 INFO L225 Difference]: With dead ends: 50 [2024-12-02 07:48:04,465 INFO L226 Difference]: Without dead ends: 45 [2024-12-02 07:48:04,466 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 [2024-12-02 07:48:04,466 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:04,467 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 172 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 138 Unchecked, 12.5s Time] [2024-12-02 07:48:04,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-12-02 07:48:04,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-12-02 07:48:04,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 38 states have internal predecessors, (55), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-12-02 07:48:04,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2024-12-02 07:48:04,472 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 7 [2024-12-02 07:48:04,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:04,473 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2024-12-02 07:48:04,473 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) [2024-12-02 07:48:04,473 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2024-12-02 07:48:04,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-12-02 07:48:04,474 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:04,474 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:04,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:48:04,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/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 [2024-12-02 07:48:04,675 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:04,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:04,675 INFO L85 PathProgramCache]: Analyzing trace with hash -443415814, now seen corresponding path program 1 times [2024-12-02 07:48:04,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:04,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [742662332] [2024-12-02 07:48:04,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:04,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:04,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:04,677 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:04,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 07:48:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:04,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:48:04,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 07:48:04,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:04,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:04,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742662332] [2024-12-02 07:48:04,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742662332] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:04,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:04,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:04,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092354] [2024-12-02 07:48:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:04,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:04,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:04,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:04,921 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:04,921 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:05,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:05,491 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2024-12-02 07:48:05,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:48:05,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-12-02 07:48:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:05,495 INFO L225 Difference]: With dead ends: 98 [2024-12-02 07:48:05,495 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 07:48:05,495 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:05,496 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 10 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:05,497 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 142 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:05,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 07:48:05,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2024-12-02 07:48:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.4047619047619047) internal successors, (59), 42 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 07:48:05,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2024-12-02 07:48:05,508 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 43 [2024-12-02 07:48:05,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:05,508 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2024-12-02 07:48:05,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:05,509 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2024-12-02 07:48:05,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-02 07:48:05,510 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:05,510 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:05,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 07:48:05,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:05,711 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:05,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:05,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1534512391, now seen corresponding path program 1 times [2024-12-02 07:48:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:05,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084773816] [2024-12-02 07:48:05,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:05,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:05,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:05,713 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:05,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 07:48:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:05,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 07:48:05,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:48:05,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:05,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084773816] [2024-12-02 07:48:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084773816] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:05,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:48:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028848945] [2024-12-02 07:48:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:05,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:48:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:05,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:48:05,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:48:05,933 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:05,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:05,969 INFO L93 Difference]: Finished difference Result 70 states and 98 transitions. [2024-12-02 07:48:05,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:48:05,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 45 [2024-12-02 07:48:05,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:05,971 INFO L225 Difference]: With dead ends: 70 [2024-12-02 07:48:05,971 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 07:48:05,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:48:05,972 INFO L435 NwaCegarLoop]: 64 mSDtfsCounter, 13 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:05,972 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 124 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 07:48:05,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 07:48:05,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-12-02 07:48:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.380952380952381) internal successors, (58), 42 states have internal predecessors, (58), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 07:48:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2024-12-02 07:48:05,978 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 45 [2024-12-02 07:48:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:05,978 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2024-12-02 07:48:05,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2024-12-02 07:48:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 07:48:05,980 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:05,980 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:05,986 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 07:48:06,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:06,181 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:06,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:06,181 INFO L85 PathProgramCache]: Analyzing trace with hash 677551233, now seen corresponding path program 1 times [2024-12-02 07:48:06,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:06,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375022805] [2024-12-02 07:48:06,181 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:06,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:06,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:06,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 07:48:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:06,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:48:06,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:06,453 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:48:06,453 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:06,453 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:06,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375022805] [2024-12-02 07:48:06,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375022805] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:06,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96931040] [2024-12-02 07:48:06,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:06,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:06,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:06,454 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:06,454 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:06,454 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:06,525 INFO L93 Difference]: Finished difference Result 71 states and 98 transitions. [2024-12-02 07:48:06,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:48:06,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2024-12-02 07:48:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:06,526 INFO L225 Difference]: With dead ends: 71 [2024-12-02 07:48:06,526 INFO L226 Difference]: Without dead ends: 50 [2024-12-02 07:48:06,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:06,527 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 13 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:06,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 181 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:06,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-12-02 07:48:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-12-02 07:48:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 42 states have (on average 1.3571428571428572) internal successors, (57), 42 states have internal predecessors, (57), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-12-02 07:48:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 68 transitions. [2024-12-02 07:48:06,531 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 68 transitions. Word has length 47 [2024-12-02 07:48:06,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:06,531 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 68 transitions. [2024-12-02 07:48:06,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 68 transitions. [2024-12-02 07:48:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-12-02 07:48:06,533 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:06,533 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:06,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 07:48:06,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:06,733 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:06,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:06,734 INFO L85 PathProgramCache]: Analyzing trace with hash 90745219, now seen corresponding path program 1 times [2024-12-02 07:48:06,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:06,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463807125] [2024-12-02 07:48:06,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:06,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:06,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:06,735 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:06,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 07:48:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:06,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:48:06,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 07:48:06,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:06,995 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:06,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463807125] [2024-12-02 07:48:06,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463807125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:06,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:06,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:06,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391823740] [2024-12-02 07:48:06,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:06,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:06,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:06,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:06,996 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:06,996 INFO L87 Difference]: Start difference. First operand 50 states and 68 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:07,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:07,354 INFO L93 Difference]: Finished difference Result 99 states and 138 transitions. [2024-12-02 07:48:07,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:48:07,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 47 [2024-12-02 07:48:07,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:07,362 INFO L225 Difference]: With dead ends: 99 [2024-12-02 07:48:07,362 INFO L226 Difference]: Without dead ends: 57 [2024-12-02 07:48:07,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:07,363 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:07,364 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-12-02 07:48:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-12-02 07:48:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 45 states have (on average 1.3555555555555556) internal successors, (61), 46 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:07,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 74 transitions. [2024-12-02 07:48:07,369 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 74 transitions. Word has length 47 [2024-12-02 07:48:07,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:07,369 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 74 transitions. [2024-12-02 07:48:07,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:07,370 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 74 transitions. [2024-12-02 07:48:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 07:48:07,370 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:07,370 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:07,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 07:48:07,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:07,571 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:07,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:07,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1565809172, now seen corresponding path program 1 times [2024-12-02 07:48:07,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:07,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [991868123] [2024-12-02 07:48:07,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:07,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:07,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:07,573 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:07,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 07:48:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:07,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:48:07,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 07:48:07,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:07,842 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:07,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991868123] [2024-12-02 07:48:07,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991868123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:07,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:07,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448974738] [2024-12-02 07:48:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:07,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:07,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:07,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:07,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:07,843 INFO L87 Difference]: Start difference. First operand 54 states and 74 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:08,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:08,198 INFO L93 Difference]: Finished difference Result 106 states and 148 transitions. [2024-12-02 07:48:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 07:48:08,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-12-02 07:48:08,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:08,200 INFO L225 Difference]: With dead ends: 106 [2024-12-02 07:48:08,200 INFO L226 Difference]: Without dead ends: 60 [2024-12-02 07:48:08,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:08,200 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 5 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:08,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 153 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2024-12-02 07:48:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2024-12-02 07:48:08,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:08,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 78 transitions. [2024-12-02 07:48:08,210 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 78 transitions. Word has length 48 [2024-12-02 07:48:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:08,210 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 78 transitions. [2024-12-02 07:48:08,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 78 transitions. [2024-12-02 07:48:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-12-02 07:48:08,212 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:08,212 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:08,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 07:48:08,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:08,412 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:08,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:08,413 INFO L85 PathProgramCache]: Analyzing trace with hash 268015152, now seen corresponding path program 1 times [2024-12-02 07:48:08,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:08,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184862669] [2024-12-02 07:48:08,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:08,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:08,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:08,414 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:08,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 07:48:08,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:08,465 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:48:08,466 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:48:09,078 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:09,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:48:09,662 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:09,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184862669] [2024-12-02 07:48:09,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184862669] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:09,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:09,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-12-02 07:48:09,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762344191] [2024-12-02 07:48:09,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:09,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:48:09,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:09,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:48:09,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:09,664 INFO L87 Difference]: Start difference. First operand 56 states and 78 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:09,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:09,996 INFO L93 Difference]: Finished difference Result 67 states and 91 transitions. [2024-12-02 07:48:09,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:48:09,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-12-02 07:48:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:09,998 INFO L225 Difference]: With dead ends: 67 [2024-12-02 07:48:09,998 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 07:48:09,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:09,998 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 14 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:09,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 240 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:09,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 07:48:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2024-12-02 07:48:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:10,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2024-12-02 07:48:10,005 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 48 [2024-12-02 07:48:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:10,005 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2024-12-02 07:48:10,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2024-12-02 07:48:10,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:48:10,006 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:10,006 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:10,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 07:48:10,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:10,207 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:10,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:10,207 INFO L85 PathProgramCache]: Analyzing trace with hash 684163988, now seen corresponding path program 1 times [2024-12-02 07:48:10,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:10,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305226590] [2024-12-02 07:48:10,208 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:10,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:10,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:10,209 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:10,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 07:48:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:10,257 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 07:48:10,259 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:11,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 07:48:11,030 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:48:11,657 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:11,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305226590] [2024-12-02 07:48:11,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305226590] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 07:48:11,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 07:48:11,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-12-02 07:48:11,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139394457] [2024-12-02 07:48:11,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:11,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:48:11,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:11,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:48:11,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-12-02 07:48:11,659 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:11,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:11,913 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2024-12-02 07:48:11,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:48:11,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-12-02 07:48:11,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:11,914 INFO L225 Difference]: With dead ends: 62 [2024-12-02 07:48:11,915 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 07:48:11,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 07:48:11,915 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 1 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:11,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 289 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 07:48:11,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 07:48:11,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 07:48:11,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 47 states have (on average 1.3404255319148937) internal successors, (63), 48 states have internal predecessors, (63), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:11,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 76 transitions. [2024-12-02 07:48:11,924 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 76 transitions. Word has length 50 [2024-12-02 07:48:11,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:11,924 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 76 transitions. [2024-12-02 07:48:11,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:11,924 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 76 transitions. [2024-12-02 07:48:11,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:48:11,925 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:11,926 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:11,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 07:48:12,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:12,126 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:12,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:12,127 INFO L85 PathProgramCache]: Analyzing trace with hash 626905686, now seen corresponding path program 1 times [2024-12-02 07:48:12,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:12,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008794694] [2024-12-02 07:48:12,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:12,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:12,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:12,128 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:12,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 07:48:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:12,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:48:12,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:12,695 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-12-02 07:48:12,695 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:12,695 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008794694] [2024-12-02 07:48:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008794694] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:12,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:12,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 07:48:12,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048963904] [2024-12-02 07:48:12,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:12,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 07:48:12,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:12,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 07:48:12,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:12,697 INFO L87 Difference]: Start difference. First operand 56 states and 76 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:13,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:13,047 INFO L93 Difference]: Finished difference Result 87 states and 117 transitions. [2024-12-02 07:48:13,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:48:13,048 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-12-02 07:48:13,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:13,049 INFO L225 Difference]: With dead ends: 87 [2024-12-02 07:48:13,049 INFO L226 Difference]: Without dead ends: 69 [2024-12-02 07:48:13,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:13,049 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:13,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 326 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 07:48:13,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-12-02 07:48:13,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-12-02 07:48:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 60 states have internal predecessors, (74), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 07:48:13,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 92 transitions. [2024-12-02 07:48:13,056 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 92 transitions. Word has length 50 [2024-12-02 07:48:13,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:13,057 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 92 transitions. [2024-12-02 07:48:13,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:13,057 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 92 transitions. [2024-12-02 07:48:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-12-02 07:48:13,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:13,057 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:13,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 07:48:13,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:13,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:13,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:13,258 INFO L85 PathProgramCache]: Analyzing trace with hash 885071124, now seen corresponding path program 1 times [2024-12-02 07:48:13,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:13,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1854894743] [2024-12-02 07:48:13,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:13,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:13,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:13,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:13,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 07:48:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:13,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:48:13,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:13,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-12-02 07:48:13,555 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:13,555 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:13,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854894743] [2024-12-02 07:48:13,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854894743] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:13,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:13,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:48:13,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304273653] [2024-12-02 07:48:13,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:13,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:48:13,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:13,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:48:13,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:13,557 INFO L87 Difference]: Start difference. First operand 69 states and 92 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:13,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:13,747 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2024-12-02 07:48:13,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:48:13,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-12-02 07:48:13,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:13,749 INFO L225 Difference]: With dead ends: 80 [2024-12-02 07:48:13,749 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 07:48:13,749 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:13,750 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 0 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:13,750 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 07:48:13,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 07:48:13,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-12-02 07:48:13,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 54 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 07:48:13,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2024-12-02 07:48:13,759 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 50 [2024-12-02 07:48:13,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:13,760 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2024-12-02 07:48:13,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-12-02 07:48:13,760 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2024-12-02 07:48:13,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-12-02 07:48:13,760 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:13,760 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:13,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 07:48:13,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:13,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:13,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:13,961 INFO L85 PathProgramCache]: Analyzing trace with hash 12145430, now seen corresponding path program 1 times [2024-12-02 07:48:13,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:13,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033816012] [2024-12-02 07:48:13,961 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:13,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:13,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:13,963 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:13,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 07:48:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:14,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:48:14,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:48:14,680 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:15,114 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-12-02 07:48:15,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:15,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033816012] [2024-12-02 07:48:15,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033816012] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:15,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:15,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-12-02 07:48:15,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790543469] [2024-12-02 07:48:15,115 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:15,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:48:15,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:15,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:48:15,116 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:48:15,116 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:15,738 INFO L93 Difference]: Finished difference Result 89 states and 113 transitions. [2024-12-02 07:48:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 07:48:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2024-12-02 07:48:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:15,739 INFO L225 Difference]: With dead ends: 89 [2024-12-02 07:48:15,739 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 07:48:15,739 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:48:15,740 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 353 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:15,740 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 353 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:15,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 07:48:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2024-12-02 07:48:15,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 49 states have (on average 1.2653061224489797) internal successors, (62), 51 states have internal predecessors, (62), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-12-02 07:48:15,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 74 transitions. [2024-12-02 07:48:15,747 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 74 transitions. Word has length 54 [2024-12-02 07:48:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:15,747 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 74 transitions. [2024-12-02 07:48:15,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:15,748 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 74 transitions. [2024-12-02 07:48:15,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:48:15,748 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:15,749 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:15,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 07:48:15,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:15,949 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:15,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:15,949 INFO L85 PathProgramCache]: Analyzing trace with hash -654941126, now seen corresponding path program 2 times [2024-12-02 07:48:15,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:15,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1423635147] [2024-12-02 07:48:15,950 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:48:15,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:15,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:15,951 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:15,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 07:48:16,005 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:48:16,005 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:48:16,007 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 07:48:16,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:17,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:48:17,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-12-02 07:48:18,830 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423635147] [2024-12-02 07:48:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423635147] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:18,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:18,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-12-02 07:48:18,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96539314] [2024-12-02 07:48:18,831 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:18,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 07:48:18,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:18,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 07:48:18,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:48:18,832 INFO L87 Difference]: Start difference. First operand 59 states and 74 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-12-02 07:48:19,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:19,991 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-12-02 07:48:19,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:48:19,992 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) Word has length 57 [2024-12-02 07:48:19,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:19,993 INFO L225 Difference]: With dead ends: 88 [2024-12-02 07:48:19,993 INFO L226 Difference]: Without dead ends: 62 [2024-12-02 07:48:19,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-12-02 07:48:19,994 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 23 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:19,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 599 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 07:48:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-12-02 07:48:20,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2024-12-02 07:48:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 54 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:20,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2024-12-02 07:48:20,001 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 57 [2024-12-02 07:48:20,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:20,001 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2024-12-02 07:48:20,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 12 states have internal predecessors, (47), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-12-02 07:48:20,002 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2024-12-02 07:48:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-12-02 07:48:20,002 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:20,003 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:20,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 07:48:20,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:20,203 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:20,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash 96951158, now seen corresponding path program 3 times [2024-12-02 07:48:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214373903] [2024-12-02 07:48:20,204 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 07:48:20,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:20,205 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:20,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 07:48:20,255 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-12-02 07:48:20,255 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:48:20,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:48:20,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:48:20,645 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:20,645 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:20,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214373903] [2024-12-02 07:48:20,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214373903] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:20,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:20,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 07:48:20,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947736725] [2024-12-02 07:48:20,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:20,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 07:48:20,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:20,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 07:48:20,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:20,646 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:21,283 INFO L93 Difference]: Finished difference Result 120 states and 148 transitions. [2024-12-02 07:48:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 07:48:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2024-12-02 07:48:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:21,285 INFO L225 Difference]: With dead ends: 120 [2024-12-02 07:48:21,285 INFO L226 Difference]: Without dead ends: 66 [2024-12-02 07:48:21,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:21,286 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:21,286 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 181 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-12-02 07:48:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2024-12-02 07:48:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 54 states have (on average 1.2407407407407407) internal successors, (67), 58 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 07:48:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 82 transitions. [2024-12-02 07:48:21,291 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 82 transitions. Word has length 57 [2024-12-02 07:48:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:21,291 INFO L471 AbstractCegarLoop]: Abstraction has 66 states and 82 transitions. [2024-12-02 07:48:21,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 82 transitions. [2024-12-02 07:48:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:48:21,292 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:21,292 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:21,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 07:48:21,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:21,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:21,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:21,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1853551782, now seen corresponding path program 1 times [2024-12-02 07:48:21,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350696913] [2024-12-02 07:48:21,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:21,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:21,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:21,494 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:21,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 07:48:21,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:21,545 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 07:48:21,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:48:21,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:22,583 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 07:48:22,583 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:22,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350696913] [2024-12-02 07:48:22,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350696913] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:22,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:22,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-12-02 07:48:22,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885629687] [2024-12-02 07:48:22,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:22,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 07:48:22,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:22,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 07:48:22,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 07:48:22,585 INFO L87 Difference]: Start difference. First operand 66 states and 82 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:48:23,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:23,380 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2024-12-02 07:48:23,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 07:48:23,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2024-12-02 07:48:23,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:23,382 INFO L225 Difference]: With dead ends: 139 [2024-12-02 07:48:23,382 INFO L226 Difference]: Without dead ends: 75 [2024-12-02 07:48:23,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:48:23,383 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 15 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:23,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 241 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 07:48:23,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2024-12-02 07:48:23,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2024-12-02 07:48:23,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 64 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 07:48:23,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2024-12-02 07:48:23,389 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 58 [2024-12-02 07:48:23,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:23,389 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2024-12-02 07:48:23,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:48:23,390 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2024-12-02 07:48:23,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-12-02 07:48:23,390 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:23,390 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:23,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 07:48:23,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:23,591 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:23,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:23,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1127828100, now seen corresponding path program 1 times [2024-12-02 07:48:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:23,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [136134192] [2024-12-02 07:48:23,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:23,593 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:23,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 07:48:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:23,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 07:48:23,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:24,211 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:48:24,211 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:24,211 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:24,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136134192] [2024-12-02 07:48:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136134192] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:24,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:24,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 07:48:24,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437405955] [2024-12-02 07:48:24,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:24,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 07:48:24,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:24,213 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 07:48:24,213 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 07:48:24,213 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:24,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:24,987 INFO L93 Difference]: Finished difference Result 140 states and 176 transitions. [2024-12-02 07:48:24,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 07:48:24,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2024-12-02 07:48:24,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:24,989 INFO L225 Difference]: With dead ends: 140 [2024-12-02 07:48:24,989 INFO L226 Difference]: Without dead ends: 76 [2024-12-02 07:48:24,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-12-02 07:48:24,990 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 8 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:24,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 185 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 07:48:24,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-12-02 07:48:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2024-12-02 07:48:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 64 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 6 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-12-02 07:48:24,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2024-12-02 07:48:24,998 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 58 [2024-12-02 07:48:24,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:24,998 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2024-12-02 07:48:24,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:24,999 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2024-12-02 07:48:24,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 07:48:24,999 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:24,999 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:25,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 07:48:25,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:25,200 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:25,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1012317842, now seen corresponding path program 1 times [2024-12-02 07:48:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:25,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [646970860] [2024-12-02 07:48:25,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:25,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:25,202 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:25,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 07:48:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:25,254 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 07:48:25,255 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-12-02 07:48:25,514 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 07:48:25,514 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:25,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646970860] [2024-12-02 07:48:25,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646970860] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:48:25,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:48:25,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 07:48:25,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396086818] [2024-12-02 07:48:25,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:48:25,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 07:48:25,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:25,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 07:48:25,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 07:48:25,515 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:25,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:25,948 INFO L93 Difference]: Finished difference Result 144 states and 181 transitions. [2024-12-02 07:48:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 07:48:25,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2024-12-02 07:48:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:25,950 INFO L225 Difference]: With dead ends: 144 [2024-12-02 07:48:25,950 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 07:48:25,950 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 07:48:25,950 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 11 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:25,951 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 133 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 07:48:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 07:48:25,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2024-12-02 07:48:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 56 states have (on average 1.25) internal successors, (70), 59 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:25,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 83 transitions. [2024-12-02 07:48:25,956 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 83 transitions. Word has length 59 [2024-12-02 07:48:25,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:25,956 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 83 transitions. [2024-12-02 07:48:25,956 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:25,956 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 83 transitions. [2024-12-02 07:48:25,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-12-02 07:48:25,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:25,957 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:25,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 07:48:26,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:26,157 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:26,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:26,158 INFO L85 PathProgramCache]: Analyzing trace with hash 6008039, now seen corresponding path program 1 times [2024-12-02 07:48:26,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:26,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717181482] [2024-12-02 07:48:26,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:48:26,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:26,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:26,160 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:26,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 07:48:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:48:26,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 07:48:26,218 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 07:48:27,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:28,773 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-12-02 07:48:28,774 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:28,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717181482] [2024-12-02 07:48:28,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717181482] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:28,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:28,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2024-12-02 07:48:28,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784707837] [2024-12-02 07:48:28,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:28,775 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 07:48:28,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:28,775 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 07:48:28,776 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2024-12-02 07:48:28,776 INFO L87 Difference]: Start difference. First operand 67 states and 83 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:48:31,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:31,231 INFO L93 Difference]: Finished difference Result 147 states and 185 transitions. [2024-12-02 07:48:31,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 07:48:31,232 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2024-12-02 07:48:31,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:31,233 INFO L225 Difference]: With dead ends: 147 [2024-12-02 07:48:31,233 INFO L226 Difference]: Without dead ends: 88 [2024-12-02 07:48:31,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=141, Invalid=239, Unknown=0, NotChecked=0, Total=380 [2024-12-02 07:48:31,234 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:31,234 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 295 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 07:48:31,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-12-02 07:48:31,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2024-12-02 07:48:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 62 states have internal predecessors, (76), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 07:48:31,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 89 transitions. [2024-12-02 07:48:31,240 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 89 transitions. Word has length 60 [2024-12-02 07:48:31,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:31,240 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 89 transitions. [2024-12-02 07:48:31,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 07:48:31,240 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 89 transitions. [2024-12-02 07:48:31,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 07:48:31,241 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 07:48:31,241 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:31,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 07:48:31,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:31,441 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 07:48:31,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:48:31,442 INFO L85 PathProgramCache]: Analyzing trace with hash -263903857, now seen corresponding path program 2 times [2024-12-02 07:48:31,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 07:48:31,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51641048] [2024-12-02 07:48:31,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 07:48:31,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:31,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:48:31,444 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 07:48:31,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 07:48:31,498 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 07:48:31,499 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 07:48:31,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 07:48:31,501 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 07:48:32,415 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:48:32,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 07:48:33,091 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-12-02 07:48:33,091 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 07:48:33,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51641048] [2024-12-02 07:48:33,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51641048] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 07:48:33,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 07:48:33,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-12-02 07:48:33,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281198801] [2024-12-02 07:48:33,092 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 07:48:33,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 07:48:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 07:48:33,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 07:48:33,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 07:48:33,097 INFO L87 Difference]: Start difference. First operand 70 states and 89 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:33,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 07:48:33,946 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2024-12-02 07:48:33,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 07:48:33,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 64 [2024-12-02 07:48:33,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 07:48:33,947 INFO L225 Difference]: With dead ends: 71 [2024-12-02 07:48:33,947 INFO L226 Difference]: Without dead ends: 0 [2024-12-02 07:48:33,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 117 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-12-02 07:48:33,948 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 6 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 07:48:33,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 222 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 07:48:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-12-02 07:48:33,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-12-02 07:48:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 07:48:33,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-12-02 07:48:33,949 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 64 [2024-12-02 07:48:33,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 07:48:33,949 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-12-02 07:48:33,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-12-02 07:48:33,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-12-02 07:48:33,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-12-02 07:48:33,952 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-12-02 07:48:33,952 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-12-02 07:48:33,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 07:48:34,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 07:48:34,155 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:48:34,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-12-02 07:48:36,691 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 07:48:36,700 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-12-02 07:48:36,701 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-12-02 07:48:36,703 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-12-02 07:48:36,703 WARN L970 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-12-02 07:48:36,704 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 07:48:36 BoogieIcfgContainer [2024-12-02 07:48:36,704 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 07:48:36,704 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 07:48:36,704 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 07:48:36,704 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 07:48:36,705 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:39:20" (3/4) ... [2024-12-02 07:48:36,707 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 07:48:36,710 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-12-02 07:48:36,710 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-12-02 07:48:36,714 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-12-02 07:48:36,715 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-12-02 07:48:36,715 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 07:48:36,715 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-12-02 07:48:36,740 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-12-02 07:48:36,740 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) [2024-12-02 07:48:36,756 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-12-02 07:48:36,756 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) [2024-12-02 07:48:36,794 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 07:48:36,794 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 07:48:36,794 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 07:48:36,795 INFO L158 Benchmark]: Toolchain (without parser) took 561031.51ms. Allocated memory is still 92.3MB. Free memory was 70.0MB in the beginning and 34.9MB in the end (delta: 35.1MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2024-12-02 07:48:36,795 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:48:36,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.99ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 55.1MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 07:48:36,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.45ms. Allocated memory is still 92.3MB. Free memory was 55.1MB in the beginning and 53.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:48:36,795 INFO L158 Benchmark]: Boogie Preprocessor took 40.06ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:48:36,796 INFO L158 Benchmark]: RCFGBuilder took 4621.28ms. Allocated memory is still 92.3MB. Free memory was 51.3MB in the beginning and 64.1MB in the end (delta: -12.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-12-02 07:48:36,796 INFO L158 Benchmark]: TraceAbstraction took 556018.31ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 41.0MB in the end (delta: 22.5MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. [2024-12-02 07:48:36,796 INFO L158 Benchmark]: Witness Printer took 89.85ms. Allocated memory is still 92.3MB. Free memory was 41.0MB in the beginning and 34.9MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 07:48:36,798 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory is still 47.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.99ms. Allocated memory is still 92.3MB. Free memory was 69.8MB in the beginning and 55.1MB in the end (delta: 14.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.45ms. Allocated memory is still 92.3MB. Free memory was 55.1MB in the beginning and 53.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.06ms. Allocated memory is still 92.3MB. Free memory was 53.5MB in the beginning and 51.3MB in the end (delta: 2.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4621.28ms. Allocated memory is still 92.3MB. Free memory was 51.3MB in the beginning and 64.1MB in the end (delta: -12.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * TraceAbstraction took 556018.31ms. Allocated memory is still 92.3MB. Free memory was 63.5MB in the beginning and 41.0MB in the end (delta: 22.5MB). Peak memory consumption was 44.8MB. Max. memory is 16.1GB. * Witness Printer took 89.85ms. Allocated memory is still 92.3MB. Free memory was 41.0MB in the beginning and 34.9MB in the end (delta: 6.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: currentRoundingMode - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 60]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 553.4s, OverallIterations: 19, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 232 SdHoareTripleChecker+Valid, 20.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 229 mSDsluCounter, 4285 SdHoareTripleChecker+Invalid, 20.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 138 IncrementalHoareTripleChecker+Unchecked, 3235 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 915 IncrementalHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 1050 mSDtfsCounter, 915 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1295 GetRequests, 1187 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 21.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=15, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 58 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 412.9s SatisfiabilityAnalysisTime, 112.9s InterpolantComputationTime, 909 NumberOfCodeBlocks, 909 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1274 ConstructedInterpolants, 2 QuantifiedInterpolants, 2373 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1694 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 26 InterpolantComputations, 13 PerfectInterpolantSequences, 725/826 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((0 != \old(e)) || !(e <= -128))) && !(\old(m) < 16777216)) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) RESULT: Ultimate proved your program to be correct! [2024-12-02 07:48:36,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b018d8b7-ffa2-4ac6-a938-14e6c38be252/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE