./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 715908359373978289cc76ce2f00faf49f4d4a3c6ddae64771646fc969bea981 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:45:03,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:45:03,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:45:03,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:45:03,704 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:45:03,737 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:45:03,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:45:03,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:45:03,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:45:03,739 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:45:03,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:45:03,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:45:03,741 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:45:03,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:45:03,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:45:03,742 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:45:03,743 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:45:03,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:45:03,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:45:03,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:45:03,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:45:03,743 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:45:03,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:45:03,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:45:03,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:45:03,745 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:45:03,745 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:45:03,745 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:45:03,745 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_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 715908359373978289cc76ce2f00faf49f4d4a3c6ddae64771646fc969bea981 [2024-11-28 03:45:04,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:45:04,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:45:04,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:45:04,069 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:45:04,070 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:45:04,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2024-11-28 03:45:07,057 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/data/a2f6a117e/c2c00317fe1342328b82ac0788a7c9da/FLAG6d536c859 [2024-11-28 03:45:07,375 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:45:07,376 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c [2024-11-28 03:45:07,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/data/a2f6a117e/c2c00317fe1342328b82ac0788a7c9da/FLAG6d536c859 [2024-11-28 03:45:07,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/data/a2f6a117e/c2c00317fe1342328b82ac0788a7c9da [2024-11-28 03:45:07,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:45:07,424 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:45:07,426 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:45:07,426 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:45:07,434 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:45:07,435 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,439 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5033f763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07, skipping insertion in model container [2024-11-28 03:45:07,439 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,457 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:45:07,659 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_fb51a432-ef5c-4be2-855d-5c53a0b620db/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c[454,467] [2024-11-28 03:45:07,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:45:07,675 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:45:07,694 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_fb51a432-ef5c-4be2-855d-5c53a0b620db/sv-benchmarks/c/recursive-simple/id_i15_o15-1.c[454,467] [2024-11-28 03:45:07,697 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:45:07,714 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:45:07,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07 WrapperNode [2024-11-28 03:45:07,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:45:07,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:45:07,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:45:07,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:45:07,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,735 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,753 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 18 [2024-11-28 03:45:07,755 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:45:07,756 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:45:07,756 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:45:07,756 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:45:07,767 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,768 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,770 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,783 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:45:07,783 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,783 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,790 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,791 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,793 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,794 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,795 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:45:07,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:45:07,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:45:07,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:45:07,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (1/1) ... [2024-11-28 03:45:07,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:45:07,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:07,837 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:45:07,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:45:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:45:07,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:45:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:45:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:45:07,867 INFO L130 BoogieDeclarations]: Found specification of procedure id [2024-11-28 03:45:07,867 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2024-11-28 03:45:07,927 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:45:07,930 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:45:08,050 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2024-11-28 03:45:08,050 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:45:08,063 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:45:08,063 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:45:08,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:45:08 BoogieIcfgContainer [2024-11-28 03:45:08,064 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:45:08,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:45:08,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:45:08,076 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:45:08,076 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:45:07" (1/3) ... [2024-11-28 03:45:08,077 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb37b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:45:08, skipping insertion in model container [2024-11-28 03:45:08,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:45:07" (2/3) ... [2024-11-28 03:45:08,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bb37b3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:45:08, skipping insertion in model container [2024-11-28 03:45:08,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:45:08" (3/3) ... [2024-11-28 03:45:08,081 INFO L128 eAbstractionObserver]: Analyzing ICFG id_i15_o15-1.c [2024-11-28 03:45:08,104 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:45:08,105 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG id_i15_o15-1.c that has 2 procedures, 16 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:45:08,194 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:45:08,213 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;@2f7f984f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:45:08,213 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:45:08,217 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:45:08,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:45:08,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:08,226 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:08,226 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:08,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:08,234 INFO L85 PathProgramCache]: Analyzing trace with hash -358017204, now seen corresponding path program 1 times [2024-11-28 03:45:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:08,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628956416] [2024-11-28 03:45:08,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:08,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628956416] [2024-11-28 03:45:08,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628956416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:08,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:45:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:45:08,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437857255] [2024-11-28 03:45:08,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:08,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:45:08,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:08,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:45:08,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:45:08,569 INFO L87 Difference]: Start difference. First operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:08,649 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2024-11-28 03:45:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:45:08,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-28 03:45:08,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:08,660 INFO L225 Difference]: With dead ends: 25 [2024-11-28 03:45:08,661 INFO L226 Difference]: Without dead ends: 15 [2024-11-28 03:45:08,664 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:45:08,667 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:08,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 40 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:08,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-11-28 03:45:08,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-11-28 03:45:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 11 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:45:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2024-11-28 03:45:08,718 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2024-11-28 03:45:08,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:08,718 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2024-11-28 03:45:08,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2024-11-28 03:45:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:45:08,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:08,720 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:08,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:45:08,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:08,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 679465686, now seen corresponding path program 1 times [2024-11-28 03:45:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:08,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090419926] [2024-11-28 03:45:08,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:08,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:45:08,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:08,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090419926] [2024-11-28 03:45:08,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090419926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:08,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98629564] [2024-11-28 03:45:08,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:08,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:08,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:08,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:08,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:45:09,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:09,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:45:09,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:45:09,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:09,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:45:09,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98629564] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:09,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:09,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 14 [2024-11-28 03:45:09,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197617360] [2024-11-28 03:45:09,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:09,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:09,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:09,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:09,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:09,616 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 14 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:45:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:09,773 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2024-11-28 03:45:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:45:09,774 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 14 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) Word has length 16 [2024-11-28 03:45:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:09,775 INFO L225 Difference]: With dead ends: 34 [2024-11-28 03:45:09,776 INFO L226 Difference]: Without dead ends: 30 [2024-11-28 03:45:09,777 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:45:09,779 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:09,780 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 60 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:09,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-28 03:45:09,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2024-11-28 03:45:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:45:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2024-11-28 03:45:09,795 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 16 [2024-11-28 03:45:09,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:09,795 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2024-11-28 03:45:09,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 14 states have internal predecessors, (24), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:45:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2024-11-28 03:45:09,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 03:45:09,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:09,798 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:09,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:10,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:10,003 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:10,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:10,004 INFO L85 PathProgramCache]: Analyzing trace with hash 371264716, now seen corresponding path program 2 times [2024-11-28 03:45:10,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:10,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041796567] [2024-11-28 03:45:10,004 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:10,026 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:10,026 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 5 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 03:45:10,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041796567] [2024-11-28 03:45:10,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041796567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:10,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483241973] [2024-11-28 03:45:10,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:10,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:10,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:10,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:10,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:45:10,487 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:10,488 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:10,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:45:10,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:45:10,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:12,136 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 03:45:12,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483241973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:12,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:12,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 13] total 22 [2024-11-28 03:45:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34625586] [2024-11-28 03:45:12,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:12,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:45:12,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:12,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:45:12,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:45:12,145 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 22 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 22 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 03:45:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:12,385 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2024-11-28 03:45:12,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:45:12,388 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 22 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 34 [2024-11-28 03:45:12,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:12,389 INFO L225 Difference]: With dead ends: 49 [2024-11-28 03:45:12,389 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 03:45:12,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=574, Unknown=0, NotChecked=0, Total=812 [2024-11-28 03:45:12,390 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 67 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:12,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 74 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:12,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 03:45:12,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2024-11-28 03:45:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 3 states have call successors, (3), 2 states have call predecessors, (3), 8 states have return successors, (9), 8 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-28 03:45:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2024-11-28 03:45:12,406 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 34 [2024-11-28 03:45:12,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:12,407 INFO L471 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2024-11-28 03:45:12,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 22 states have internal predecessors, (40), 10 states have call successors, (10), 1 states have call predecessors, (10), 8 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 03:45:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2024-11-28 03:45:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 03:45:12,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:12,412 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:12,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:45:12,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:12,616 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:12,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:12,617 INFO L85 PathProgramCache]: Analyzing trace with hash -626238314, now seen corresponding path program 3 times [2024-11-28 03:45:12,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:12,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886909419] [2024-11-28 03:45:12,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:12,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:12,656 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 03:45:12,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 15 proven. 103 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:45:13,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886909419] [2024-11-28 03:45:13,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886909419] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:13,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585490325] [2024-11-28 03:45:13,153 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:45:13,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:13,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:13,158 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:13,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:45:13,241 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-28 03:45:13,241 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:13,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:45:13,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-28 03:45:13,457 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 03:45:16,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585490325] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:16,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:16,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 19] total 30 [2024-11-28 03:45:16,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660224606] [2024-11-28 03:45:16,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:16,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:45:16,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:16,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:45:16,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=645, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:45:16,999 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 30 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-28 03:45:17,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:17,284 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2024-11-28 03:45:17,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:45:17,286 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 30 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) Word has length 52 [2024-11-28 03:45:17,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:17,287 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:45:17,287 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 03:45:17,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 85 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=466, Invalid=1094, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:45:17,289 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 145 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:17,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 106 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 03:45:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2024-11-28 03:45:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 11 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:45:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2024-11-28 03:45:17,301 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 52 [2024-11-28 03:45:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:17,301 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2024-11-28 03:45:17,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.074074074074074) internal successors, (56), 30 states have internal predecessors, (56), 14 states have call successors, (14), 1 states have call predecessors, (14), 12 states have return successors, (22), 11 states have call predecessors, (22), 14 states have call successors, (22) [2024-11-28 03:45:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2024-11-28 03:45:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:45:17,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:17,302 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:17,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:45:17,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:17,503 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:17,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1719425780, now seen corresponding path program 4 times [2024-11-28 03:45:17,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:17,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332667855] [2024-11-28 03:45:17,504 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:17,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:17,536 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:17,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:17,973 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 17 proven. 174 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2024-11-28 03:45:17,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332667855] [2024-11-28 03:45:17,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332667855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:17,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934605881] [2024-11-28 03:45:17,973 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:45:17,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:17,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:17,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:45:18,080 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:45:18,080 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:18,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:45:18,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:18,223 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-28 03:45:18,223 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 03:45:24,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934605881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:24,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:24,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 25] total 32 [2024-11-28 03:45:24,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834253795] [2024-11-28 03:45:24,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:24,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:45:24,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:24,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:45:24,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:45:24,458 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand has 32 states, 29 states have (on average 2.103448275862069) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-28 03:45:24,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:24,709 INFO L93 Difference]: Finished difference Result 67 states and 72 transitions. [2024-11-28 03:45:24,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:45:24,710 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 29 states have (on average 2.103448275862069) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) Word has length 70 [2024-11-28 03:45:24,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:24,711 INFO L225 Difference]: With dead ends: 67 [2024-11-28 03:45:24,711 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 03:45:24,713 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 122 SyntacticMatches, 11 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=608, Invalid=1372, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 03:45:24,714 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 65 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:24,714 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 130 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:24,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 03:45:24,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2024-11-28 03:45:24,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 37 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 14 states have return successors, (15), 14 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 03:45:24,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2024-11-28 03:45:24,724 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 70 [2024-11-28 03:45:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:24,724 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2024-11-28 03:45:24,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 29 states have (on average 2.103448275862069) internal successors, (61), 32 states have internal predecessors, (61), 16 states have call successors, (16), 1 states have call predecessors, (16), 13 states have return successors, (25), 13 states have call predecessors, (25), 16 states have call successors, (25) [2024-11-28 03:45:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2024-11-28 03:45:24,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 03:45:24,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:24,726 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:24,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:24,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:24,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:24,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:24,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1433749930, now seen corresponding path program 5 times [2024-11-28 03:45:24,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:24,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215495943] [2024-11-28 03:45:24,927 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:24,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:24,961 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:45:24,961 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 25 proven. 260 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-28 03:45:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215495943] [2024-11-28 03:45:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215495943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420722033] [2024-11-28 03:45:25,566 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:45:25,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:25,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:25,570 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:25,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:45:25,745 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2024-11-28 03:45:25,745 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:25,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:45:25,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:25,882 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 03:45:25,882 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-28 03:45:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420722033] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:39,370 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:39,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 31] total 36 [2024-11-28 03:45:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59728354] [2024-11-28 03:45:39,370 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:39,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:45:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:39,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:45:39,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=948, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:45:39,374 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-28 03:45:39,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:39,744 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2024-11-28 03:45:39,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:45:39,745 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) Word has length 88 [2024-11-28 03:45:39,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:39,747 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:45:39,747 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 03:45:39,748 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 157 SyntacticMatches, 14 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 897 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=760, Invalid=1690, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 03:45:39,749 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:39,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 138 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 03:45:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2024-11-28 03:45:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 16 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 03:45:39,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 62 transitions. [2024-11-28 03:45:39,761 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 62 transitions. Word has length 88 [2024-11-28 03:45:39,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:39,761 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 62 transitions. [2024-11-28 03:45:39,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 33 states have (on average 2.090909090909091) internal successors, (69), 36 states have internal predecessors, (69), 18 states have call successors, (18), 1 states have call predecessors, (18), 15 states have return successors, (30), 15 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-28 03:45:39,762 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 62 transitions. [2024-11-28 03:45:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 03:45:39,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:39,763 INFO L218 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:39,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:39,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:39,964 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:39,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:39,964 INFO L85 PathProgramCache]: Analyzing trace with hash 415287702, now seen corresponding path program 6 times [2024-11-28 03:45:39,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:39,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575559716] [2024-11-28 03:45:39,965 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:39,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:40,014 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 03:45:40,014 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:41,424 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-28 03:45:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575559716] [2024-11-28 03:45:41,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575559716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583310117] [2024-11-28 03:45:41,425 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:45:41,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:41,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:41,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:41,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:45:41,850 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-28 03:45:41,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:41,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 03:45:41,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:41,976 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-28 03:45:41,976 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:43,289 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2024-11-28 03:45:43,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583310117] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:43,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:43,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 35 [2024-11-28 03:45:43,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196949979] [2024-11-28 03:45:43,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:43,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:45:43,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:43,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:45:43,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:45:43,295 INFO L87 Difference]: Start difference. First operand 60 states and 62 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 19 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 03:45:43,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:43,754 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2024-11-28 03:45:43,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:45:43,755 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 19 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 100 [2024-11-28 03:45:43,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:43,756 INFO L225 Difference]: With dead ends: 73 [2024-11-28 03:45:43,756 INFO L226 Difference]: Without dead ends: 66 [2024-11-28 03:45:43,757 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=1123, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:45:43,758 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:43,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1153 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:45:43,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-11-28 03:45:43,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 63. [2024-11-28 03:45:43,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 42 states have (on average 1.0476190476190477) internal successors, (44), 43 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 17 states have return successors, (18), 17 states have call predecessors, (18), 3 states have call successors, (18) [2024-11-28 03:45:43,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 65 transitions. [2024-11-28 03:45:43,770 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 65 transitions. Word has length 100 [2024-11-28 03:45:43,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:43,771 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 65 transitions. [2024-11-28 03:45:43,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 19 states have internal predecessors, (39), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-28 03:45:43,771 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 65 transitions. [2024-11-28 03:45:43,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 03:45:43,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:43,773 INFO L218 NwaCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:43,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:45:43,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:43,977 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:43,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:43,977 INFO L85 PathProgramCache]: Analyzing trace with hash 317812044, now seen corresponding path program 7 times [2024-11-28 03:45:43,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:43,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545465426] [2024-11-28 03:45:43,977 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:43,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:44,711 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 330 proven. 122 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2024-11-28 03:45:44,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:44,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545465426] [2024-11-28 03:45:44,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545465426] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:44,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225676734] [2024-11-28 03:45:44,712 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:45:44,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:44,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:44,714 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:44,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:45:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:45,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 03:45:45,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:45,347 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2024-11-28 03:45:45,347 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:45:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225676734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:45,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:45:45,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [23] total 26 [2024-11-28 03:45:45,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484849885] [2024-11-28 03:45:45,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:45,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:45:45,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:45,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:45:45,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:45:45,350 INFO L87 Difference]: Start difference. First operand 63 states and 65 transitions. Second operand has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:45:45,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:45,690 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2024-11-28 03:45:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:45:45,691 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) Word has length 106 [2024-11-28 03:45:45,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:45,692 INFO L225 Difference]: With dead ends: 66 [2024-11-28 03:45:45,692 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:45:45,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=534, Invalid=1188, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 03:45:45,694 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:45,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 142 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:45:45,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:45:45,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:45:45,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:45:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:45:45,695 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 106 [2024-11-28 03:45:45,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:45,695 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:45:45,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.05) internal successors, (41), 21 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 17 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 03:45:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:45:45,696 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:45:45,699 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:45:45,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:45:45,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:45,904 INFO L422 BasicCegarLoop]: Path program histogram: [7, 1] [2024-11-28 03:45:45,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 03:45:47,114 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:45:47,122 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:45:47 BoogieIcfgContainer [2024-11-28 03:45:47,122 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:45:47,123 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:45:47,123 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:45:47,123 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:45:47,125 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:45:08" (3/4) ... [2024-11-28 03:45:47,128 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:45:47,135 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2024-11-28 03:45:47,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 03:45:47,140 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 03:45:47,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:45:47,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:45:47,230 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:45:47,231 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:45:47,232 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:45:47,234 INFO L158 Benchmark]: Toolchain (without parser) took 39808.67ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 94.0MB in the beginning and 111.2MB in the end (delta: -17.2MB). Peak memory consumption was 78.6MB. Max. memory is 16.1GB. [2024-11-28 03:45:47,234 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:45:47,235 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.27ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 83.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:45:47,236 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.36ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 82.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:45:47,236 INFO L158 Benchmark]: Boogie Preprocessor took 40.53ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:45:47,237 INFO L158 Benchmark]: RCFGBuilder took 267.35ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 71.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:45:47,237 INFO L158 Benchmark]: TraceAbstraction took 39054.27ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 71.3MB in the beginning and 115.8MB in the end (delta: -44.6MB). Peak memory consumption was 113.6MB. Max. memory is 16.1GB. [2024-11-28 03:45:47,238 INFO L158 Benchmark]: Witness Printer took 108.89ms. Allocated memory is still 218.1MB. Free memory was 115.8MB in the beginning and 111.2MB in the end (delta: 4.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:45:47,240 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.27ms. Allocated memory is still 117.4MB. Free memory was 93.7MB in the beginning and 83.4MB in the end (delta: 10.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.36ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 82.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.53ms. Allocated memory is still 117.4MB. Free memory was 82.2MB in the beginning and 81.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 267.35ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 71.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39054.27ms. Allocated memory was 117.4MB in the beginning and 218.1MB in the end (delta: 100.7MB). Free memory was 71.3MB in the beginning and 115.8MB in the end (delta: -44.6MB). Peak memory consumption was 113.6MB. Max. memory is 16.1GB. * Witness Printer took 108.89ms. Allocated memory is still 218.1MB. Free memory was 115.8MB in the beginning and 111.2MB in the end (delta: 4.6MB). 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 - PositiveResult [Line: 15]: 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 2 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 37.7s, OverallIterations: 8, TraceHistogramMax: 17, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 405 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 342 mSDsluCounter, 1843 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1698 mSDsCounter, 183 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1241 IncrementalHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 183 mSolverCounterUnsat, 145 mSDtfsCounter, 1241 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1049 GetRequests, 761 SyntacticMatches, 40 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=7, InterpolantAutomatonStates: 138, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 32.1s InterpolantComputationTime, 942 NumberOfCodeBlocks, 942 NumberOfCodeBlocksAsserted, 89 NumberOfCheckSat, 1281 ConstructedInterpolants, 0 QuantifiedInterpolants, 3492 SizeOfPredicates, 51 NumberOfNonLiveVariables, 1218 ConjunctsInSsa, 193 ConjunctsInUnsatCore, 21 InterpolantComputations, 2 PerfectInterpolantSequences, 3651/6758 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:45:47,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb51a432-ef5c-4be2-855d-5c53a0b620db/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE