./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/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_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd --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-826ab2b [2024-11-13 14:44:53,124 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:44:53,195 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:44:53,199 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:44:53,200 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:44:53,226 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:44:53,231 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:44:53,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:44:53,232 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:44:53,232 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:44:53,232 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:44:53,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:44:53,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:44:53,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:44:53,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:44:53,235 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:44:53,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:44:53,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:44:53,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:44:53,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:44:53,236 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:44:53,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:44:53,237 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:44:53,238 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:44:53,238 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:44:53,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:44:53,239 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:44:53,239 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:44:53,239 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_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-11-13 14:44:53,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:44:53,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:44:53,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:44:53,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:44:53,664 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:44:53,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c Unable to find full path for "g++" [2024-11-13 14:44:55,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:44:56,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:44:56,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-13 14:44:56,078 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/974cbabe2/c865e1dbde8743a49961c95414d71e70/FLAG1b762c59f [2024-11-13 14:44:56,095 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/974cbabe2/c865e1dbde8743a49961c95414d71e70 [2024-11-13 14:44:56,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:44:56,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:44:56,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:44:56,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:44:56,106 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:44:56,107 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,108 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57ffedf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56, skipping insertion in model container [2024-11-13 14:44:56,108 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,133 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:44:56,330 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-13 14:44:56,336 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-13 14:44:56,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:44:56,399 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:44:56,416 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-13 14:44:56,417 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-13 14:44:56,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:44:56,465 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:44:56,465 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56 WrapperNode [2024-11-13 14:44:56,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:44:56,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:44:56,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:44:56,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:44:56,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,485 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,516 INFO L138 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2024-11-13 14:44:56,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:44:56,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:44:56,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:44:56,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:44:56,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,530 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,532 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,547 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:44:56,547 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,548 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,554 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,562 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,565 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:44:56,566 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:44:56,566 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:44:56,566 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:44:56,567 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (1/1) ... [2024-11-13 14:44:56,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:44:56,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:44:56,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:44:56,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:44:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:44:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-13 14:44:56,666 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-13 14:44:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:44:56,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:44:56,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:44:56,668 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:44:56,668 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:44:56,793 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:44:56,796 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:44:57,270 INFO L? ?]: Removed 70 outVars from TransFormulas that were not future-live. [2024-11-13 14:44:57,270 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:44:57,286 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:44:57,286 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:44:57,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:44:57 BoogieIcfgContainer [2024-11-13 14:44:57,289 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:44:57,293 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:44:57,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:44:57,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:44:57,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:44:56" (1/3) ... [2024-11-13 14:44:57,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67185ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:44:57, skipping insertion in model container [2024-11-13 14:44:57,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:44:56" (2/3) ... [2024-11-13 14:44:57,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67185ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:44:57, skipping insertion in model container [2024-11-13 14:44:57,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:44:57" (3/3) ... [2024-11-13 14:44:57,306 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-11-13 14:44:57,325 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:44:57,327 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 84 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 14:44:57,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:44:57,407 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;@2110171a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:44:57,408 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 14:44:57,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 74 states have (on average 1.5405405405405406) internal successors, (114), 77 states have internal predecessors, (114), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:44:57,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:44:57,420 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:44:57,421 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:44:57,421 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:44:57,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:44:57,427 INFO L85 PathProgramCache]: Analyzing trace with hash -929888677, now seen corresponding path program 1 times [2024-11-13 14:44:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:44:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548719808] [2024-11-13 14:44:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:44:57,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:44:57,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:44:57,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:44:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:44:57,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 14:44:57,581 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:44:57,587 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 14:44:57,589 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 14:44:57,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:44:57,598 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-13 14:44:57,614 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:44:57,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:44:57 BoogieIcfgContainer [2024-11-13 14:44:57,621 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:44:57,622 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:44:57,622 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:44:57,623 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:44:57,624 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:44:57" (3/4) ... [2024-11-13 14:44:57,626 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-13 14:44:57,628 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:44:57,629 INFO L158 Benchmark]: Toolchain (without parser) took 1529.25ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 40.7MB in the end (delta: 52.1MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2024-11-13 14:44:57,629 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:44:57,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.28ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 78.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:44:57,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.21ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 76.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:44:57,630 INFO L158 Benchmark]: Boogie Preprocessor took 48.54ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 74.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:44:57,631 INFO L158 Benchmark]: RCFGBuilder took 722.81ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 54.0MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 14:44:57,631 INFO L158 Benchmark]: TraceAbstraction took 327.76ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 41.0MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 14:44:57,632 INFO L158 Benchmark]: Witness Printer took 5.27ms. Allocated memory is still 117.4MB. Free memory was 40.9MB in the beginning and 40.7MB in the end (delta: 198.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:44:57,634 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 117.4MB. Free memory is still 74.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.28ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 78.3MB in the end (delta: 14.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.21ms. Allocated memory is still 117.4MB. Free memory was 78.3MB in the beginning and 76.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.54ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 74.6MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 722.81ms. Allocated memory is still 117.4MB. Free memory was 74.4MB in the beginning and 54.0MB in the end (delta: 20.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 327.76ms. Allocated memory is still 117.4MB. Free memory was 53.5MB in the beginning and 41.0MB in the end (delta: 12.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Witness Printer took 5.27ms. Allocated memory is still 117.4MB. Free memory was 40.9MB in the beginning and 40.7MB in the end (delta: 198.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 48]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryFLOATComparisonOperation at line 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [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, 84 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-13 14:44:57,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/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_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/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_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd --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-826ab2b [2024-11-13 14:45:00,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:45:00,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-13 14:45:00,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:45:00,982 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:45:01,031 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:45:01,033 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:45:01,033 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:45:01,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:45:01,035 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:45:01,035 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:45:01,035 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:45:01,036 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:45:01,036 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:45:01,036 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:45:01,036 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:45:01,036 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:45:01,036 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:45:01,037 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:45:01,038 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:45:01,038 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:01,038 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:45:01,041 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:45:01,041 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:45:01,041 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:45:01,041 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:45:01,041 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:45:01,042 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:45:01,042 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:45:01,042 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:45:01,042 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_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22505a874e1c1b9cefaeddfda764b868a55e81dd7541f3a9eac983e595e34539 [2024-11-13 14:45:01,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:45:01,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:45:01,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:45:01,536 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:45:01,537 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:45:01,538 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c Unable to find full path for "g++" [2024-11-13 14:45:03,575 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:45:03,883 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:45:03,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c [2024-11-13 14:45:03,905 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/2517b4097/4c796136585247f5b0a6ca0c5d771245/FLAGa7b6f626d [2024-11-13 14:45:03,933 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/data/2517b4097/4c796136585247f5b0a6ca0c5d771245 [2024-11-13 14:45:03,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:45:03,937 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:45:03,940 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:03,940 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:45:03,945 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:45:03,946 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:03" (1/1) ... [2024-11-13 14:45:03,947 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b04091c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:03, skipping insertion in model container [2024-11-13 14:45:03,950 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:45:03" (1/1) ... [2024-11-13 14:45:03,985 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:45:04,210 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-13 14:45:04,217 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-13 14:45:04,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:04,323 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:45:04,345 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[1999,2012] [2024-11-13 14:45:04,347 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_c6db248b-4529-4943-be0a-ea87651658af/sv-benchmarks/c/combinations/square_4+soft_float_2a.c.cil.c[2368,2381] [2024-11-13 14:45:04,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:45:04,412 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:45:04,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04 WrapperNode [2024-11-13 14:45:04,412 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:45:04,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:04,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:45:04,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:45:04,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,432 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,455 INFO L138 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-13 14:45:04,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:45:04,456 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:45:04,456 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:45:04,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:45:04,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,470 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,496 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 14:45:04,497 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,497 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,516 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,519 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,527 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:45:04,532 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:45:04,532 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:45:04,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:45:04,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (1/1) ... [2024-11-13 14:45:04,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:45:04,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:45:04,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:45:04,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:45:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:45:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:45:04,602 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-13 14:45:04,602 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-13 14:45:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:45:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:45:04,603 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:45:04,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:45:04,720 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:45:04,722 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:45:09,466 INFO L? ?]: Removed 54 outVars from TransFormulas that were not future-live. [2024-11-13 14:45:09,466 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:45:09,483 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:45:09,483 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:45:09,484 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:09 BoogieIcfgContainer [2024-11-13 14:45:09,484 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:45:09,487 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:45:09,488 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:45:09,493 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:45:09,494 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:45:03" (1/3) ... [2024-11-13 14:45:09,494 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4973be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:09, skipping insertion in model container [2024-11-13 14:45:09,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:45:04" (2/3) ... [2024-11-13 14:45:09,495 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d4973be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:45:09, skipping insertion in model container [2024-11-13 14:45:09,495 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:09" (3/3) ... [2024-11-13 14:45:09,497 INFO L112 eAbstractionObserver]: Analyzing ICFG square_4+soft_float_2a.c.cil.c [2024-11-13 14:45:09,514 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:45:09,516 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG square_4+soft_float_2a.c.cil.c that has 3 procedures, 61 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 14:45:09,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:45:09,638 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;@187c8367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:45:09,638 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-13 14:45:09,643 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:45:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:45:09,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:09,650 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:09,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:09,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:09,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1912677092, now seen corresponding path program 1 times [2024-11-13 14:45:09,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:45:09,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188964293] [2024-11-13 14:45:09,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:09,666 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 14:45:09,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 14:45:09,671 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 14:45:09,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-13 14:45:10,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:45:10,368 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-13 14:45:10,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:45:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:45:10,387 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:45:10,388 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:45:10,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188964293] [2024-11-13 14:45:10,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188964293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:45:10,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:45:10,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:45:10,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538815694] [2024-11-13 14:45:10,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:45:10,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:45:10,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:45:10,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:45:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:45:10,417 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:10,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:45:10,440 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2024-11-13 14:45:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:45:10,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:45:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:45:10,449 INFO L225 Difference]: With dead ends: 117 [2024-11-13 14:45:10,449 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:45:10,452 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:45:10,456 INFO L432 NwaCegarLoop]: 82 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, 82 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:45:10,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:45:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:45:10,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 14:45:10,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:45:10,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-13 14:45:10,499 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2024-11-13 14:45:10,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:45:10,499 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-13 14:45:10,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:45:10,500 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-13 14:45:10,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:45:10,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:45:10,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:45:10,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:45:10,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 14:45:10,703 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:45:10,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:45:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1912736674, now seen corresponding path program 1 times [2024-11-13 14:45:10,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:45:10,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568449756] [2024-11-13 14:45:10,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:45:10,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 14:45:10,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat [2024-11-13 14:45:10,709 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-13 14:45:10,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-13 14:52:47,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:52:48,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:52:48,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:52:56,791 WARN L286 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:53:04,918 WARN L286 SmtUtils]: Spent 8.13s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:53:12,271 WARN L286 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:53:16,350 WARN L851 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (= (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode .cse0 (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 2.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 8.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 1.0 16.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 128.0)) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) |c_ULTIMATE.start_main1_~result~0#1|)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-11-13 14:53:32,735 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:53:40,931 WARN L286 SmtUtils]: Spent 8.19s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:53:49,043 WARN L286 SmtUtils]: Spent 8.11s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:54:01,316 WARN L286 SmtUtils]: Spent 8.22s on a formula simplification that was a NOOP. DAG size: 3 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:54:09,545 WARN L286 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:54:17,666 WARN L286 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:54:21,775 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from false [2024-11-13 14:54:25,814 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 2.0))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 8.0))) (.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 16.0))) (.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 128.0)))) (or (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.lt (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) ((_ to_fp 8 24) roundNearestTiesToEven (/ 34961.0 25000.0)))))) (exists ((|v_ULTIMATE.start_main1_~IN~0#1_5| (_ FloatingPoint 8 24))) (and (fp.geq |v_ULTIMATE.start_main1_~IN~0#1_5| (_ +zero 8 24)) (fp.lt |v_ULTIMATE.start_main1_~IN~0#1_5| .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse3 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|) |v_ULTIMATE.start_main1_~IN~0#1_5|)) (_ +zero 8 24))))))) is different from true [2024-11-13 14:54:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:54:25,814 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:25,814 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:25,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568449756] [2024-11-13 14:54:25,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568449756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:25,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:25,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:54:25,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997369660] [2024-11-13 14:54:25,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:25,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:54:25,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:25,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:54:25,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-13 14:54:25,818 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:54:30,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:54:34,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:54:38,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 14:54:38,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:38,388 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2024-11-13 14:54:38,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:54:38,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:54:38,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:38,391 INFO L225 Difference]: With dead ends: 52 [2024-11-13 14:54:38,391 INFO L226 Difference]: Without dead ends: 47 [2024-11-13 14:54:38,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=13, Invalid=12, Unknown=3, NotChecked=14, Total=42 [2024-11-13 14:54:38,392 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 65 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 142 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:38,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 178 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 3 Unknown, 142 Unchecked, 12.5s Time] [2024-11-13 14:54:38,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-13 14:54:38,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-13 14:54:38,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 40 states have (on average 1.425) internal successors, (57), 40 states have internal predecessors, (57), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-13 14:54:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 66 transitions. [2024-11-13 14:54:38,405 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 66 transitions. Word has length 7 [2024-11-13 14:54:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:38,405 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 66 transitions. [2024-11-13 14:54:38,405 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:54:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 66 transitions. [2024-11-13 14:54:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:54:38,409 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:38,410 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:38,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-13 14:54:38,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-13 14:54:38,610 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:38,611 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:38,611 INFO L85 PathProgramCache]: Analyzing trace with hash 847263738, now seen corresponding path program 1 times [2024-11-13 14:54:38,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2129175325] [2024-11-13 14:54:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:38,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:38,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:38,613 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:38,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:54:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:38,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:54:38,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:38,931 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:38,931 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:38,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:38,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129175325] [2024-11-13 14:54:38,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129175325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:38,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:38,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:54:38,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609384104] [2024-11-13 14:54:38,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:38,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:54:38,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:38,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:54:38,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:38,934 INFO L87 Difference]: Start difference. First operand 47 states and 66 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:39,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:39,627 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2024-11-13 14:54:39,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:54:39,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-13 14:54:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:39,631 INFO L225 Difference]: With dead ends: 104 [2024-11-13 14:54:39,631 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:54:39,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:39,633 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 12 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:39,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 148 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 14:54:39,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:54:39,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 52. [2024-11-13 14:54:39,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3863636363636365) internal successors, (61), 44 states have internal predecessors, (61), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:54:39,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 72 transitions. [2024-11-13 14:54:39,647 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 72 transitions. Word has length 43 [2024-11-13 14:54:39,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:39,647 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 72 transitions. [2024-11-13 14:54:39,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:39,648 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 72 transitions. [2024-11-13 14:54:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:54:39,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:39,650 INFO L215 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] [2024-11-13 14:54:39,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:54:39,851 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:39,851 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:39,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:39,852 INFO L85 PathProgramCache]: Analyzing trace with hash -818654350, now seen corresponding path program 1 times [2024-11-13 14:54:39,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:39,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [300365634] [2024-11-13 14:54:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:39,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:39,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:39,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:39,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:54:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:39,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:54:39,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:40,124 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:54:40,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:40,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:40,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300365634] [2024-11-13 14:54:40,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300365634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:40,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:40,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:54:40,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863775011] [2024-11-13 14:54:40,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:40,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:54:40,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:40,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:54:40,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:54:40,127 INFO L87 Difference]: Start difference. First operand 52 states and 72 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:40,176 INFO L93 Difference]: Finished difference Result 72 states and 100 transitions. [2024-11-13 14:54:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:54:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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 46 [2024-11-13 14:54:40,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:40,179 INFO L225 Difference]: With dead ends: 72 [2024-11-13 14:54:40,179 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:54:40,179 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:54:40,180 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 13 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:40,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:54:40,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:54:40,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 14:54:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:54:40,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2024-11-13 14:54:40,188 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 46 [2024-11-13 14:54:40,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:40,189 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2024-11-13 14:54:40,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:40,189 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2024-11-13 14:54:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:54:40,190 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:40,191 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:40,212 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:54:40,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:40,395 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:40,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:40,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2080885740, now seen corresponding path program 1 times [2024-11-13 14:54:40,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:40,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1278953831] [2024-11-13 14:54:40,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:40,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:40,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:40,398 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:40,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:54:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:40,468 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:54:40,470 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:40,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-13 14:54:40,765 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:40,765 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:40,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278953831] [2024-11-13 14:54:40,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278953831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:40,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:40,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:54:40,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672880694] [2024-11-13 14:54:40,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:40,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:54:40,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:40,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:54:40,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:40,767 INFO L87 Difference]: Start difference. First operand 52 states and 71 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:40,859 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2024-11-13 14:54:40,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:54:40,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 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 48 [2024-11-13 14:54:40,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:40,861 INFO L225 Difference]: With dead ends: 73 [2024-11-13 14:54:40,862 INFO L226 Difference]: Without dead ends: 52 [2024-11-13 14:54:40,862 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:40,863 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 13 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:40,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 187 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:54:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-13 14:54:40,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-11-13 14:54:40,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-13 14:54:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 70 transitions. [2024-11-13 14:54:40,874 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 70 transitions. Word has length 48 [2024-11-13 14:54:40,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:40,875 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 70 transitions. [2024-11-13 14:54:40,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 70 transitions. [2024-11-13 14:54:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-13 14:54:40,876 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:40,877 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:40,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:54:41,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:41,081 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:41,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1494079726, now seen corresponding path program 1 times [2024-11-13 14:54:41,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:41,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [834861882] [2024-11-13 14:54:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:41,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:41,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:41,084 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:41,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:54:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:41,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:54:41,156 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:41,436 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:41,436 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:41,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:41,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834861882] [2024-11-13 14:54:41,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834861882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:41,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:41,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:54:41,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052002191] [2024-11-13 14:54:41,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:41,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:54:41,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:54:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:41,439 INFO L87 Difference]: Start difference. First operand 52 states and 70 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:41,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:41,895 INFO L93 Difference]: Finished difference Result 105 states and 144 transitions. [2024-11-13 14:54:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:54:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2024-11-13 14:54:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:41,897 INFO L225 Difference]: With dead ends: 105 [2024-11-13 14:54:41,897 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:54:41,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:41,898 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 7 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:41,898 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 157 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:54:41,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:54:41,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57. [2024-11-13 14:54:41,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.3333333333333333) internal successors, (64), 49 states have internal predecessors, (64), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:41,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 77 transitions. [2024-11-13 14:54:41,908 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 77 transitions. Word has length 48 [2024-11-13 14:54:41,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:41,908 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 77 transitions. [2024-11-13 14:54:41,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:41,909 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 77 transitions. [2024-11-13 14:54:41,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:54:41,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:41,910 INFO L215 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] [2024-11-13 14:54:41,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:54:42,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:42,114 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:42,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash -597199418, now seen corresponding path program 1 times [2024-11-13 14:54:42,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:42,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709811680] [2024-11-13 14:54:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:42,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:42,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:42,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:42,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:54:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:42,184 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:54:42,186 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:42,495 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:42,495 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709811680] [2024-11-13 14:54:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709811680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:42,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:54:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825198705] [2024-11-13 14:54:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:42,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:54:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:42,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:54:42,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:54:42,497 INFO L87 Difference]: Start difference. First operand 57 states and 77 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:43,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:43,049 INFO L93 Difference]: Finished difference Result 117 states and 161 transitions. [2024-11-13 14:54:43,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:54:43,051 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 49 [2024-11-13 14:54:43,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:43,052 INFO L225 Difference]: With dead ends: 117 [2024-11-13 14:54:43,052 INFO L226 Difference]: Without dead ends: 68 [2024-11-13 14:54:43,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:43,053 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 14 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:43,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 164 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:54:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-13 14:54:43,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2024-11-13 14:54:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 52 states have internal predecessors, (68), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:43,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2024-11-13 14:54:43,072 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 49 [2024-11-13 14:54:43,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:43,073 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2024-11-13 14:54:43,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:43,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2024-11-13 14:54:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:54:43,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:43,075 INFO L215 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] [2024-11-13 14:54:43,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 14:54:43,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:43,276 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:43,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:43,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1236624906, now seen corresponding path program 1 times [2024-11-13 14:54:43,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:43,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [900247485] [2024-11-13 14:54:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:43,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:43,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:43,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:54:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:43,349 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:54:43,350 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:43,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:43,893 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:43,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:43,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900247485] [2024-11-13 14:54:43,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900247485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:43,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:43,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:54:43,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380177932] [2024-11-13 14:54:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:43,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:54:43,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:54:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:43,895 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:44,530 INFO L93 Difference]: Finished difference Result 123 states and 168 transitions. [2024-11-13 14:54:44,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:54:44,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 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 49 [2024-11-13 14:54:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:44,532 INFO L225 Difference]: With dead ends: 123 [2024-11-13 14:54:44,532 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 14:54:44,533 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:54:44,533 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 13 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:44,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 171 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:54:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 14:54:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 58. [2024-11-13 14:54:44,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 49 states have (on average 1.3265306122448979) internal successors, (65), 50 states have internal predecessors, (65), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2024-11-13 14:54:44,552 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 49 [2024-11-13 14:54:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:44,553 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2024-11-13 14:54:44,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:44,554 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2024-11-13 14:54:44,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:54:44,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:44,555 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:44,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:54:44,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:44,756 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:44,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash 467317678, now seen corresponding path program 1 times [2024-11-13 14:54:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282479194] [2024-11-13 14:54:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:44,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:44,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:44,758 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:44,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:54:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:44,826 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:54:44,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:45,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:45,542 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:45,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282479194] [2024-11-13 14:54:45,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282479194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:45,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:45,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:54:45,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131701765] [2024-11-13 14:54:45,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:45,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:54:45,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:45,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:54:45,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:54:45,544 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:46,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:46,685 INFO L93 Difference]: Finished difference Result 128 states and 176 transitions. [2024-11-13 14:54:46,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:54:46,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 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 50 [2024-11-13 14:54:46,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:46,688 INFO L225 Difference]: With dead ends: 128 [2024-11-13 14:54:46,688 INFO L226 Difference]: Without dead ends: 78 [2024-11-13 14:54:46,688 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:54:46,689 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 19 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:46,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 220 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:54:46,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-13 14:54:46,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 59. [2024-11-13 14:54:46,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 50 states have (on average 1.34) internal successors, (67), 51 states have internal predecessors, (67), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 80 transitions. [2024-11-13 14:54:46,699 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 80 transitions. Word has length 50 [2024-11-13 14:54:46,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:46,699 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 80 transitions. [2024-11-13 14:54:46,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 80 transitions. [2024-11-13 14:54:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 14:54:46,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:46,701 INFO L215 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] [2024-11-13 14:54:46,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-13 14:54:46,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:46,901 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:46,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1088218183, now seen corresponding path program 1 times [2024-11-13 14:54:46,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:46,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422130401] [2024-11-13 14:54:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:46,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:46,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:46,904 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:46,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:54:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:46,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:54:46,975 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:47,429 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:48,419 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 14:54:48,420 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:48,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422130401] [2024-11-13 14:54:48,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422130401] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:48,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:54:48,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 14:54:48,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342965225] [2024-11-13 14:54:48,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:48,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:54:48,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:48,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:54:48,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:54:48,422 INFO L87 Difference]: Start difference. First operand 59 states and 80 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:54:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:49,672 INFO L93 Difference]: Finished difference Result 134 states and 186 transitions. [2024-11-13 14:54:49,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:54:49,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 51 [2024-11-13 14:54:49,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:49,674 INFO L225 Difference]: With dead ends: 134 [2024-11-13 14:54:49,674 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 14:54:49,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:54:49,675 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 25 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:49,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 269 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:54:49,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 14:54:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 67. [2024-11-13 14:54:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 58 states have (on average 1.3793103448275863) internal successors, (80), 59 states have internal predecessors, (80), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2024-11-13 14:54:49,694 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 51 [2024-11-13 14:54:49,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:49,694 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2024-11-13 14:54:49,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:54:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2024-11-13 14:54:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-13 14:54:49,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:49,695 INFO L215 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] [2024-11-13 14:54:49,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:54:49,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:49,896 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:49,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:49,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1276398791, now seen corresponding path program 1 times [2024-11-13 14:54:49,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:49,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550076646] [2024-11-13 14:54:49,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:49,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:49,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:49,899 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:49,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:54:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:49,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:54:49,961 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:54:50,813 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:52,385 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-13 14:54:52,385 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:52,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550076646] [2024-11-13 14:54:52,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550076646] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:52,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:54:52,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2024-11-13 14:54:52,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490493717] [2024-11-13 14:54:52,386 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:52,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:54:52,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:52,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:54:52,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-13 14:54:52,388 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:54:55,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:55,260 INFO L93 Difference]: Finished difference Result 164 states and 232 transitions. [2024-11-13 14:54:55,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:54:55,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 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 53 [2024-11-13 14:54:55,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:55,263 INFO L225 Difference]: With dead ends: 164 [2024-11-13 14:54:55,263 INFO L226 Difference]: Without dead ends: 105 [2024-11-13 14:54:55,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=103, Invalid=169, Unknown=0, NotChecked=0, Total=272 [2024-11-13 14:54:55,264 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 76 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:55,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 354 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 14:54:55,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-13 14:54:55,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 71. [2024-11-13 14:54:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.403225806451613) internal successors, (87), 63 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:55,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2024-11-13 14:54:55,277 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 53 [2024-11-13 14:54:55,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:55,277 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2024-11-13 14:54:55,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-13 14:54:55,278 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2024-11-13 14:54:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:54:55,279 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:55,279 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:54:55,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:54:55,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:55,479 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:55,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2003925934, now seen corresponding path program 2 times [2024-11-13 14:54:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752214172] [2024-11-13 14:54:55,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:54:55,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:55,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:55,482 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:55,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:54:55,548 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:54:55,549 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:54:55,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:54:55,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 14:54:56,231 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:54:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 14:54:56,824 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:56,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752214172] [2024-11-13 14:54:56,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752214172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:54:56,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:54:56,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2024-11-13 14:54:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368584595] [2024-11-13 14:54:56,825 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:54:56,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:54:56,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:56,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:54:56,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:54:56,826 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:57,181 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2024-11-13 14:54:57,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:54:57,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 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 60 [2024-11-13 14:54:57,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:57,183 INFO L225 Difference]: With dead ends: 82 [2024-11-13 14:54:57,183 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 14:54:57,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:54:57,184 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 246 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 [2024-11-13 14:54:57,184 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 246 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:54:57,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 14:54:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2024-11-13 14:54:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 63 states have internal predecessors, (86), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 99 transitions. [2024-11-13 14:54:57,202 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 99 transitions. Word has length 60 [2024-11-13 14:54:57,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:57,203 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 99 transitions. [2024-11-13 14:54:57,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:54:57,203 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 99 transitions. [2024-11-13 14:54:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:54:57,208 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:57,208 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-11-13 14:54:57,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:54:57,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:57,409 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:57,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1905110892, now seen corresponding path program 1 times [2024-11-13 14:54:57,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:57,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2131024303] [2024-11-13 14:54:57,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:57,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:57,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:57,412 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:57,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:54:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:57,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:54:57,505 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:57,783 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:54:57,783 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:54:57,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:54:57,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131024303] [2024-11-13 14:54:57,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131024303] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:54:57,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:54:57,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:54:57,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642027309] [2024-11-13 14:54:57,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:54:57,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:54:57,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:54:57,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:54:57,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:57,785 INFO L87 Difference]: Start difference. First operand 71 states and 99 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:58,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:54:58,101 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2024-11-13 14:54:58,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:54:58,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 62 [2024-11-13 14:54:58,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:54:58,103 INFO L225 Difference]: With dead ends: 82 [2024-11-13 14:54:58,103 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 14:54:58,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:54:58,103 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:54:58,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 226 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:54:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 14:54:58,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2024-11-13 14:54:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 68 states have internal predecessors, (91), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:54:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 104 transitions. [2024-11-13 14:54:58,112 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 104 transitions. Word has length 62 [2024-11-13 14:54:58,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:54:58,113 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 104 transitions. [2024-11-13 14:54:58,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:54:58,113 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 104 transitions. [2024-11-13 14:54:58,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-13 14:54:58,114 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:54:58,114 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 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] [2024-11-13 14:54:58,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:54:58,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:58,314 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:54:58,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:54:58,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1847852590, now seen corresponding path program 1 times [2024-11-13 14:54:58,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:54:58,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521913114] [2024-11-13 14:54:58,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:54:58,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:54:58,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:54:58,317 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:54:58,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:54:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:54:58,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:54:58,382 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:54:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 14:54:59,291 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 14:55:00,005 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:00,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521913114] [2024-11-13 14:55:00,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521913114] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 14:55:00,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:55:00,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-11-13 14:55:00,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157284656] [2024-11-13 14:55:00,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:00,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:55:00,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:00,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:55:00,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:55:00,007 INFO L87 Difference]: Start difference. First operand 76 states and 104 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:00,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:00,286 INFO L93 Difference]: Finished difference Result 82 states and 109 transitions. [2024-11-13 14:55:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:55:00,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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 62 [2024-11-13 14:55:00,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:00,288 INFO L225 Difference]: With dead ends: 82 [2024-11-13 14:55:00,288 INFO L226 Difference]: Without dead ends: 71 [2024-11-13 14:55:00,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:55:00,289 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:00,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 299 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:55:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-11-13 14:55:00,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2024-11-13 14:55:00,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 62 states have (on average 1.3387096774193548) internal successors, (83), 63 states have internal predecessors, (83), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:55:00,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 96 transitions. [2024-11-13 14:55:00,302 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 96 transitions. Word has length 62 [2024-11-13 14:55:00,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:00,303 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 96 transitions. [2024-11-13 14:55:00,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 96 transitions. [2024-11-13 14:55:00,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 14:55:00,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:00,305 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:00,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 14:55:00,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:00,505 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:00,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:00,506 INFO L85 PathProgramCache]: Analyzing trace with hash -603422504, now seen corresponding path program 1 times [2024-11-13 14:55:00,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:00,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895279989] [2024-11-13 14:55:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:00,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:00,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:00,509 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:00,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:55:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:00,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:55:00,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:01,144 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 14:55:01,145 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:55:01,145 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:01,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895279989] [2024-11-13 14:55:01,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895279989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:01,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:01,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:55:01,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527917784] [2024-11-13 14:55:01,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:01,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:55:01,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:01,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:55:01,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:55:01,147 INFO L87 Difference]: Start difference. First operand 71 states and 96 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:01,484 INFO L93 Difference]: Finished difference Result 102 states and 134 transitions. [2024-11-13 14:55:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:55:01,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 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 63 [2024-11-13 14:55:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:01,486 INFO L225 Difference]: With dead ends: 102 [2024-11-13 14:55:01,486 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 14:55:01,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:55:01,487 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 0 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:01,488 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 326 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 14:55:01,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 14:55:01,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2024-11-13 14:55:01,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 69 states have internal predecessors, (87), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-13 14:55:01,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 102 transitions. [2024-11-13 14:55:01,500 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 102 transitions. Word has length 63 [2024-11-13 14:55:01,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:01,500 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 102 transitions. [2024-11-13 14:55:01,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:01,501 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 102 transitions. [2024-11-13 14:55:01,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:55:01,502 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:01,502 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2024-11-13 14:55:01,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:55:01,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:01,703 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:01,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:01,703 INFO L85 PathProgramCache]: Analyzing trace with hash -388860536, now seen corresponding path program 1 times [2024-11-13 14:55:01,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:01,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2022874742] [2024-11-13 14:55:01,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:01,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:01,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:01,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:55:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:01,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:55:01,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:03,345 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:55:03,346 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:05,487 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-13 14:55:05,488 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:05,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022874742] [2024-11-13 14:55:05,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022874742] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:05,488 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:55:05,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2024-11-13 14:55:05,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225276325] [2024-11-13 14:55:05,488 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:05,489 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:55:05,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:05,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:55:05,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:55:05,490 INFO L87 Difference]: Start difference. First operand 77 states and 102 transitions. Second operand has 18 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:55:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:06,785 INFO L93 Difference]: Finished difference Result 111 states and 144 transitions. [2024-11-13 14:55:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:55:06,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 67 [2024-11-13 14:55:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:06,787 INFO L225 Difference]: With dead ends: 111 [2024-11-13 14:55:06,787 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 14:55:06,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:55:06,788 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 4 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:06,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 637 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-13 14:55:06,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 14:55:06,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2024-11-13 14:55:06,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 75 states have (on average 1.28) internal successors, (96), 78 states have internal predecessors, (96), 6 states have call successors, (6), 3 states have call predecessors, (6), 6 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2024-11-13 14:55:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2024-11-13 14:55:06,803 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 67 [2024-11-13 14:55:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:06,804 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2024-11-13 14:55:06,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.25) internal successors, (52), 14 states have internal predecessors, (52), 4 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 14:55:06,806 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2024-11-13 14:55:06,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-13 14:55:06,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:06,807 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 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] [2024-11-13 14:55:06,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:55:07,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:07,011 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:07,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:07,011 INFO L85 PathProgramCache]: Analyzing trace with hash 197945478, now seen corresponding path program 1 times [2024-11-13 14:55:07,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:07,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [806274439] [2024-11-13 14:55:07,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:07,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:07,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:07,014 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:07,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:55:07,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:07,077 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:55:07,079 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-13 14:55:07,892 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:08,408 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-13 14:55:08,408 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:08,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806274439] [2024-11-13 14:55:08,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806274439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:08,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:55:08,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2024-11-13 14:55:08,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323427331] [2024-11-13 14:55:08,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:08,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:55:08,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:08,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:55:08,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:55:08,410 INFO L87 Difference]: Start difference. First operand 88 states and 117 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:55:09,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:09,078 INFO L93 Difference]: Finished difference Result 113 states and 146 transitions. [2024-11-13 14:55:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 14:55:09,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 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 67 [2024-11-13 14:55:09,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:09,080 INFO L225 Difference]: With dead ends: 113 [2024-11-13 14:55:09,080 INFO L226 Difference]: Without dead ends: 77 [2024-11-13 14:55:09,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:55:09,081 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 360 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 [2024-11-13 14:55:09,081 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 360 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:55:09,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-13 14:55:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 74. [2024-11-13 14:55:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 64 states have (on average 1.265625) internal successors, (81), 66 states have internal predecessors, (81), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-13 14:55:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2024-11-13 14:55:09,100 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 67 [2024-11-13 14:55:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:09,100 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2024-11-13 14:55:09,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 7 states have internal predecessors, (40), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:55:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2024-11-13 14:55:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 14:55:09,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:09,102 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:09,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 14:55:09,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:09,302 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:09,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1269261992, now seen corresponding path program 2 times [2024-11-13 14:55:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:09,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814870387] [2024-11-13 14:55:09,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:55:09,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:09,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:09,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:55:09,372 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 14:55:09,372 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:55:09,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:55:09,376 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-13 14:55:10,517 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:55:10,517 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:10,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814870387] [2024-11-13 14:55:10,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814870387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:55:10,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:55:10,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:55:10,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754707668] [2024-11-13 14:55:10,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:55:10,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:55:10,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:10,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:55:10,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:55:10,519 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:11,389 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2024-11-13 14:55:11,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:55:11,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 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 71 [2024-11-13 14:55:11,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:11,391 INFO L225 Difference]: With dead ends: 101 [2024-11-13 14:55:11,391 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 14:55:11,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-13 14:55:11,392 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 10 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:11,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 415 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 14:55:11,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 14:55:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-13 14:55:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-13 14:55:11,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2024-11-13 14:55:11,403 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 71 [2024-11-13 14:55:11,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:11,403 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2024-11-13 14:55:11,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-13 14:55:11,404 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2024-11-13 14:55:11,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 14:55:11,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:11,405 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:11,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 14:55:11,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:11,606 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:11,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:11,606 INFO L85 PathProgramCache]: Analyzing trace with hash -682455978, now seen corresponding path program 2 times [2024-11-13 14:55:11,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:11,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [240931518] [2024-11-13 14:55:11,606 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:55:11,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:11,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:11,608 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:11,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:55:11,680 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:55:11,680 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:55:11,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:55:11,683 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:12,884 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 14:55:12,884 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:14,692 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 14:55:14,692 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:14,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240931518] [2024-11-13 14:55:14,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240931518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:14,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:55:14,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2024-11-13 14:55:14,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821350768] [2024-11-13 14:55:14,693 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:14,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:55:14,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:14,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:55:14,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:55:14,695 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 12 states have internal predecessors, (51), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 14:55:15,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:15,778 INFO L93 Difference]: Finished difference Result 115 states and 142 transitions. [2024-11-13 14:55:15,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:55:15,779 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 12 states have internal predecessors, (51), 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 71 [2024-11-13 14:55:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:15,780 INFO L225 Difference]: With dead ends: 115 [2024-11-13 14:55:15,780 INFO L226 Difference]: Without dead ends: 83 [2024-11-13 14:55:15,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:55:15,781 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 46 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:55:15,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 519 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:55:15,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-13 14:55:15,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-13 14:55:15,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 74 states have internal predecessors, (89), 5 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-13 14:55:15,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 102 transitions. [2024-11-13 14:55:15,791 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 102 transitions. Word has length 71 [2024-11-13 14:55:15,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:15,792 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 102 transitions. [2024-11-13 14:55:15,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 12 states have internal predecessors, (51), 6 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 5 states have call successors, (8) [2024-11-13 14:55:15,792 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 102 transitions. [2024-11-13 14:55:15,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 14:55:15,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:55:15,793 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:15,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:55:15,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:15,994 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:55:15,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:55:15,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1151368346, now seen corresponding path program 1 times [2024-11-13 14:55:15,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:55:15,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [752949827] [2024-11-13 14:55:15,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:55:15,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:15,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:55:15,996 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:55:15,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:55:16,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:55:16,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:55:16,064 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:55:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-13 14:55:17,039 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:55:17,834 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-13 14:55:17,834 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:55:17,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752949827] [2024-11-13 14:55:17,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752949827] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:55:17,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:55:17,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-13 14:55:17,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580901898] [2024-11-13 14:55:17,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:55:17,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 14:55:17,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:55:17,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 14:55:17,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:55:17,837 INFO L87 Difference]: Start difference. First operand 83 states and 102 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:55:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:55:18,724 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2024-11-13 14:55:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:55:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 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 71 [2024-11-13 14:55:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:55:18,724 INFO L225 Difference]: With dead ends: 84 [2024-11-13 14:55:18,724 INFO L226 Difference]: Without dead ends: 0 [2024-11-13 14:55:18,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:55:18,726 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 238 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 [2024-11-13 14:55:18,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 238 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:55:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-13 14:55:18,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-13 14:55:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:55:18,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-13 14:55:18,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2024-11-13 14:55:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:55:18,727 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-13 14:55:18,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-13 14:55:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-13 14:55:18,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-13 14:55:18,730 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2024-11-13 14:55:18,731 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2024-11-13 14:55:18,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:55:18,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:55:18,935 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:55:18,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-13 14:55:26,159 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:55:26,173 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,174 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,174 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,174 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,180 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,181 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,192 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,192 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,192 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,193 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,197 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: currentRoundingMode [2024-11-13 14:55:26,198 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~roundNearestTiesToEven [2024-11-13 14:55:26,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:55:26 BoogieIcfgContainer [2024-11-13 14:55:26,199 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:55:26,200 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:55:26,200 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:55:26,200 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:55:26,201 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:45:09" (3/4) ... [2024-11-13 14:55:26,203 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 14:55:26,208 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2024-11-13 14:55:26,208 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-13 14:55:26,216 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2024-11-13 14:55:26,217 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-13 14:55:26,217 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-13 14:55:26,217 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-13 14:55:26,247 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-13 14:55:26,247 WARN L216 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) [2024-11-13 14:55:26,275 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) [2024-11-13 14:55:26,275 WARN L141 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(((e + -1) % 4294967296) <= -128) || (0 != \old(e))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) [2024-11-13 14:55:26,322 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:55:26,323 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 14:55:26,323 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:55:26,324 INFO L158 Benchmark]: Toolchain (without parser) took 622386.76ms. Allocated memory was 83.9MB in the beginning and 335.5MB in the end (delta: 251.7MB). Free memory was 60.7MB in the beginning and 142.2MB in the end (delta: -81.5MB). Peak memory consumption was 165.0MB. Max. memory is 16.1GB. [2024-11-13 14:55:26,325 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:55:26,325 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.07ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 45.7MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:55:26,326 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.54ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 44.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:55:26,327 INFO L158 Benchmark]: Boogie Preprocessor took 75.24ms. Allocated memory is still 83.9MB. Free memory was 44.2MB in the beginning and 42.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:55:26,327 INFO L158 Benchmark]: RCFGBuilder took 4951.75ms. Allocated memory is still 83.9MB. Free memory was 41.8MB in the beginning and 24.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:55:26,327 INFO L158 Benchmark]: TraceAbstraction took 616711.91ms. Allocated memory was 83.9MB in the beginning and 335.5MB in the end (delta: 251.7MB). Free memory was 24.0MB in the beginning and 146.7MB in the end (delta: -122.7MB). Peak memory consumption was 167.3MB. Max. memory is 16.1GB. [2024-11-13 14:55:26,327 INFO L158 Benchmark]: Witness Printer took 123.21ms. Allocated memory is still 335.5MB. Free memory was 146.7MB in the beginning and 142.2MB in the end (delta: 4.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:55:26,329 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 83.9MB. Free memory is still 65.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 473.07ms. Allocated memory is still 83.9MB. Free memory was 60.4MB in the beginning and 45.7MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.54ms. Allocated memory is still 83.9MB. Free memory was 45.7MB in the beginning and 44.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 75.24ms. Allocated memory is still 83.9MB. Free memory was 44.2MB in the beginning and 42.1MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 4951.75ms. Allocated memory is still 83.9MB. Free memory was 41.8MB in the beginning and 24.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 616711.91ms. Allocated memory was 83.9MB in the beginning and 335.5MB in the end (delta: 251.7MB). Free memory was 24.0MB in the beginning and 146.7MB in the end (delta: -122.7MB). Peak memory consumption was 167.3MB. Max. memory is 16.1GB. * Witness Printer took 123.21ms. Allocated memory is still 335.5MB. Free memory was 146.7MB in the beginning and 142.2MB in the end (delta: 4.5MB). 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 - 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 - 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 - 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, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 609.3s, OverallIterations: 20, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 26.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 343 SdHoareTripleChecker+Valid, 24.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 339 mSDsluCounter, 5324 SdHoareTripleChecker+Invalid, 23.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 142 IncrementalHoareTripleChecker+Unchecked, 4146 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1159 IncrementalHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 1178 mSDtfsCounter, 1159 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1541 GetRequests, 1413 SyntacticMatches, 4 SemanticMatches, 124 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=16, InterpolantAutomatonStates: 140, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 117 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 457.9s SatisfiabilityAnalysisTime, 119.4s InterpolantComputationTime, 1045 NumberOfCodeBlocks, 1005 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1519 ConstructedInterpolants, 2 QuantifiedInterpolants, 2843 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1809 ConjunctsInSsa, 117 ConjunctsInUnsatCore, 28 InterpolantComputations, 13 PerfectInterpolantSequences, 1106/1212 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 - 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))) && ((\old(m) >= 33554432) || ((m == \old(m)) && !(m < 16777216)))) && ((0 != \old(e)) || !(e <= -128))) - InvariantResult [Line: 80]: Loop Invariant Derived loop invariant: ((0 != \old(m)) && ((1 != \old(m)) || (m < 16777216))) - ProcedureContractResult [Line: 67]: Procedure Contract for base2flt Derived contract for procedure base2flt. Ensures: ((0 != m) || (0 == \result)) - ProcedureContractResult [Line: 58]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert. Requires: (0 != cond) Ensures: (0 != cond) RESULT: Ultimate proved your program to be correct! [2024-11-13 14:55:26,535 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6db248b-4529-4943-be0a-ea87651658af/bin/uautomizer-verify-qhAvR1uOyd/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