./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i --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_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/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_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/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_766626f9-846b-4bb7-a5e8-0d020602e441/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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:46:22,672 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:46:22,793 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:46:22,800 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:46:22,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:46:22,830 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:46:22,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:46:22,831 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:46:22,832 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:46:22,832 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:46:22,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:46:22,832 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:46:22,832 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:46:22,832 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:46:22,833 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:46:22,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:46:22,834 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:46:22,834 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:22,835 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:46:22,835 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:22,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:46:22,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:46:22,837 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:46:22,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:46:22,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:46:22,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:46:22,837 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_766626f9-846b-4bb7-a5e8-0d020602e441/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 -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2024-11-28 04:46:23,163 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:46:23,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:46:23,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:46:23,186 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:46:23,187 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:46:23,189 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-28 04:46:26,667 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/data/f27b34328/0bcc25c9959d48b1a764117dd0dfe1ef/FLAG0aa376275 [2024-11-28 04:46:26,983 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:46:26,983 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2024-11-28 04:46:26,992 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/data/f27b34328/0bcc25c9959d48b1a764117dd0dfe1ef/FLAG0aa376275 [2024-11-28 04:46:27,250 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/data/f27b34328/0bcc25c9959d48b1a764117dd0dfe1ef [2024-11-28 04:46:27,254 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:46:27,258 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:46:27,262 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:27,262 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:46:27,273 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:46:27,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,278 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43db7537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27, skipping insertion in model container [2024-11-28 04:46:27,278 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:46:27,509 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_766626f9-846b-4bb7-a5e8-0d020602e441/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-28 04:46:27,540 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:27,549 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:46:27,561 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_766626f9-846b-4bb7-a5e8-0d020602e441/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i[815,828] [2024-11-28 04:46:27,571 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:46:27,587 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:46:27,587 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27 WrapperNode [2024-11-28 04:46:27,587 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:46:27,589 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:27,589 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:46:27,589 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:46:27,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,603 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,623 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2024-11-28 04:46:27,623 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:46:27,624 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:46:27,624 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:46:27,624 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:46:27,634 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,636 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,651 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 3, 4, 2]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 3, 1]. [2024-11-28 04:46:27,651 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,651 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,668 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,669 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,670 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,672 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:46:27,673 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:46:27,673 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:46:27,673 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:46:27,674 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (1/1) ... [2024-11-28 04:46:27,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:46:27,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:27,718 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:46:27,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:46:27,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:46:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:46:27,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:46:27,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:46:27,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:46:27,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:46:27,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:46:27,887 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:46:27,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:46:28,077 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-28 04:46:28,078 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:46:28,091 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:46:28,091 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:46:28,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:46:28 BoogieIcfgContainer [2024-11-28 04:46:28,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:46:28,095 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:46:28,095 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:46:28,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:46:28,102 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:46:27" (1/3) ... [2024-11-28 04:46:28,103 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa45f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:46:28, skipping insertion in model container [2024-11-28 04:46:28,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:46:27" (2/3) ... [2024-11-28 04:46:28,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa45f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:46:28, skipping insertion in model container [2024-11-28 04:46:28,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:46:28" (3/3) ... [2024-11-28 04:46:28,107 INFO L128 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2024-11-28 04:46:28,127 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:46:28,131 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_single_elem_init.i that has 1 procedures, 21 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:46:28,214 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:46:28,235 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;@5764af9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:46:28,235 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:46:28,243 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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 04:46:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:46:28,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:28,252 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:28,252 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:28,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:28,259 INFO L85 PathProgramCache]: Analyzing trace with hash 975489773, now seen corresponding path program 1 times [2024-11-28 04:46:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:28,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560268599] [2024-11-28 04:46:28,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:28,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:28,467 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 04:46:28,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:28,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560268599] [2024-11-28 04:46:28,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560268599] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:28,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:46:28,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231589958] [2024-11-28 04:46:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:28,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:46:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:28,505 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:46:28,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:46:28,508 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 04:46:28,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:28,526 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2024-11-28 04:46:28,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:46:28,529 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:46:28,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:28,537 INFO L225 Difference]: With dead ends: 33 [2024-11-28 04:46:28,538 INFO L226 Difference]: Without dead ends: 17 [2024-11-28 04:46:28,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:46:28,551 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:28,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:46:28,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-28 04:46:28,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-28 04:46:28,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 04:46:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-28 04:46:28,591 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2024-11-28 04:46:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:28,591 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-28 04:46:28,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 04:46:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-28 04:46:28,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:46:28,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:28,592 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:28,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:46:28,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:28,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:28,598 INFO L85 PathProgramCache]: Analyzing trace with hash 288390149, now seen corresponding path program 1 times [2024-11-28 04:46:28,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:28,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256990858] [2024-11-28 04:46:28,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:28,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:28,750 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 04:46:28,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:28,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256990858] [2024-11-28 04:46:28,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256990858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:28,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:28,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:46:28,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894956492] [2024-11-28 04:46:28,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:28,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:46:28,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:28,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:46:28,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:46:28,754 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 04:46:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:28,864 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2024-11-28 04:46:28,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:46:28,865 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:46:28,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:28,865 INFO L225 Difference]: With dead ends: 35 [2024-11-28 04:46:28,865 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 04:46:28,866 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:46:28,867 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:28,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 18 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:28,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 04:46:28,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20. [2024-11-28 04:46:28,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 04:46:28,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-28 04:46:28,878 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 8 [2024-11-28 04:46:28,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:28,878 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-28 04:46:28,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 04:46:28,878 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-28 04:46:28,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-28 04:46:28,878 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:28,879 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:28,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:46:28,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:28,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:28,879 INFO L85 PathProgramCache]: Analyzing trace with hash -808397521, now seen corresponding path program 1 times [2024-11-28 04:46:28,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:28,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482758102] [2024-11-28 04:46:28,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:28,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:29,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482758102] [2024-11-28 04:46:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482758102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:29,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580234081] [2024-11-28 04:46:29,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:29,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:29,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:29,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:29,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:46:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:29,275 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:46:29,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:29,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:29,359 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:29,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580234081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:29,426 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:29,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:46:29,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849924328] [2024-11-28 04:46:29,426 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:29,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:46:29,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:29,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:46:29,431 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:29,432 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 04:46:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:29,638 INFO L93 Difference]: Finished difference Result 59 states and 79 transitions. [2024-11-28 04:46:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:46:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-28 04:46:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:29,640 INFO L225 Difference]: With dead ends: 59 [2024-11-28 04:46:29,640 INFO L226 Difference]: Without dead ends: 49 [2024-11-28 04:46:29,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:29,641 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 51 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:29,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 27 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:46:29,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-11-28 04:46:29,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 44. [2024-11-28 04:46:29,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 43 states have internal predecessors, (58), 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 04:46:29,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2024-11-28 04:46:29,649 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 17 [2024-11-28 04:46:29,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:29,649 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2024-11-28 04:46:29,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 04:46:29,650 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2024-11-28 04:46:29,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:46:29,651 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:29,651 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:29,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:46:29,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:29,855 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:29,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:29,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1913112731, now seen corresponding path program 2 times [2024-11-28 04:46:29,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:29,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737871405] [2024-11-28 04:46:29,856 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:29,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:29,928 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:29,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:46:30,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737871405] [2024-11-28 04:46:30,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737871405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:30,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085183258] [2024-11-28 04:46:30,309 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:30,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:30,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:30,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:30,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:46:30,418 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:30,418 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:30,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:46:30,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:46:30,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:46:30,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085183258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:30,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:30,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:46:30,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236363406] [2024-11-28 04:46:30,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:30,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:46:30,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:30,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:46:30,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:46:30,706 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 04:46:31,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:31,098 INFO L93 Difference]: Finished difference Result 122 states and 168 transitions. [2024-11-28 04:46:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:46:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 04:46:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:31,101 INFO L225 Difference]: With dead ends: 122 [2024-11-28 04:46:31,101 INFO L226 Difference]: Without dead ends: 109 [2024-11-28 04:46:31,102 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:46:31,103 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:31,103 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 47 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:46:31,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-28 04:46:31,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 95. [2024-11-28 04:46:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.351063829787234) internal successors, (127), 94 states have internal predecessors, (127), 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 04:46:31,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 127 transitions. [2024-11-28 04:46:31,116 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 127 transitions. Word has length 38 [2024-11-28 04:46:31,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:31,116 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 127 transitions. [2024-11-28 04:46:31,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.153846153846154) internal successors, (67), 13 states have internal predecessors, (67), 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 04:46:31,117 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 127 transitions. [2024-11-28 04:46:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:46:31,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:31,119 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:31,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:46:31,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:31,323 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:31,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:31,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1323187385, now seen corresponding path program 3 times [2024-11-28 04:46:31,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:31,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131225004] [2024-11-28 04:46:31,324 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:31,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:31,373 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:46:31,373 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 04:46:31,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:31,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131225004] [2024-11-28 04:46:31,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131225004] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:31,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215925561] [2024-11-28 04:46:31,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:31,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:31,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:31,651 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:31,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:46:31,825 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 04:46:31,825 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:31,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:46:31,835 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:31,927 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 04:46:31,928 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:32,097 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 280 trivial. 0 not checked. [2024-11-28 04:46:32,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215925561] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:32,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:32,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-28 04:46:32,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298814561] [2024-11-28 04:46:32,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:32,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 04:46:32,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:32,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 04:46:32,100 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:46:32,101 INFO L87 Difference]: Start difference. First operand 95 states and 127 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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 04:46:32,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:32,514 INFO L93 Difference]: Finished difference Result 159 states and 210 transitions. [2024-11-28 04:46:32,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:46:32,514 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2024-11-28 04:46:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:32,516 INFO L225 Difference]: With dead ends: 159 [2024-11-28 04:46:32,516 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 04:46:32,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2024-11-28 04:46:32,518 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 380 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:32,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 42 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 04:46:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2024-11-28 04:46:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.302325581395349) internal successors, (168), 129 states have internal predecessors, (168), 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 04:46:32,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 168 transitions. [2024-11-28 04:46:32,540 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 168 transitions. Word has length 83 [2024-11-28 04:46:32,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:32,545 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 168 transitions. [2024-11-28 04:46:32,545 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 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 04:46:32,545 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 168 transitions. [2024-11-28 04:46:32,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 04:46:32,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:32,551 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:32,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:32,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:32,755 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:32,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:32,756 INFO L85 PathProgramCache]: Analyzing trace with hash 275360357, now seen corresponding path program 4 times [2024-11-28 04:46:32,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:32,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762564963] [2024-11-28 04:46:32,756 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:32,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:32,849 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:32,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-28 04:46:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762564963] [2024-11-28 04:46:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762564963] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256244247] [2024-11-28 04:46:33,576 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:33,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:33,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:33,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:46:33,749 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:33,750 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:33,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:46:33,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-28 04:46:33,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 408 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-28 04:46:34,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256244247] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:34,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:34,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 28 [2024-11-28 04:46:34,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074477035] [2024-11-28 04:46:34,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:34,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 04:46:34,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:34,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 04:46:34,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:46:34,554 INFO L87 Difference]: Start difference. First operand 130 states and 168 transitions. Second operand has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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 04:46:35,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:35,231 INFO L93 Difference]: Finished difference Result 312 states and 420 transitions. [2024-11-28 04:46:35,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 04:46:35,232 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2024-11-28 04:46:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:35,234 INFO L225 Difference]: With dead ends: 312 [2024-11-28 04:46:35,235 INFO L226 Difference]: Without dead ends: 269 [2024-11-28 04:46:35,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 219 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:46:35,236 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 387 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:35,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 75 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:46:35,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2024-11-28 04:46:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 231. [2024-11-28 04:46:35,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.3521739130434782) internal successors, (311), 230 states have internal predecessors, (311), 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 04:46:35,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 311 transitions. [2024-11-28 04:46:35,260 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 311 transitions. Word has length 116 [2024-11-28 04:46:35,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:35,261 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 311 transitions. [2024-11-28 04:46:35,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.571428571428571) internal successors, (156), 28 states have internal predecessors, (156), 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 04:46:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 311 transitions. [2024-11-28 04:46:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-28 04:46:35,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:35,265 INFO L218 NwaCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 14, 13, 13, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:35,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:46:35,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:35,469 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:35,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:35,470 INFO L85 PathProgramCache]: Analyzing trace with hash 5494215, now seen corresponding path program 5 times [2024-11-28 04:46:35,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:35,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570401309] [2024-11-28 04:46:35,470 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:35,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:35,607 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-28 04:46:35,607 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 1976 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 04:46:37,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570401309] [2024-11-28 04:46:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570401309] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:37,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119788771] [2024-11-28 04:46:37,169 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:37,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:37,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:37,173 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:37,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:46:38,415 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2024-11-28 04:46:38,415 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:38,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:46:38,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:38,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-28 04:46:38,552 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2236 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 1976 trivial. 0 not checked. [2024-11-28 04:46:39,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119788771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:39,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:39,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 16, 16] total 43 [2024-11-28 04:46:39,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153186301] [2024-11-28 04:46:39,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:39,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-28 04:46:39,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:39,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-28 04:46:39,306 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:46:39,307 INFO L87 Difference]: Start difference. First operand 231 states and 311 transitions. Second operand has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 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 04:46:40,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:40,475 INFO L93 Difference]: Finished difference Result 473 states and 645 transitions. [2024-11-28 04:46:40,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-28 04:46:40,475 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 203 [2024-11-28 04:46:40,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:40,479 INFO L225 Difference]: With dead ends: 473 [2024-11-28 04:46:40,479 INFO L226 Difference]: Without dead ends: 427 [2024-11-28 04:46:40,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 392 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 04:46:40,482 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 791 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:40,482 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 108 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:46:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2024-11-28 04:46:40,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2024-11-28 04:46:40,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.3007159904534606) internal successors, (545), 419 states have internal predecessors, (545), 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 04:46:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 545 transitions. [2024-11-28 04:46:40,514 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 545 transitions. Word has length 203 [2024-11-28 04:46:40,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:40,514 INFO L471 AbstractCegarLoop]: Abstraction has 420 states and 545 transitions. [2024-11-28 04:46:40,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.0) internal successors, (258), 43 states have internal predecessors, (258), 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 04:46:40,515 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 545 transitions. [2024-11-28 04:46:40,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2024-11-28 04:46:40,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:40,521 INFO L218 NwaCegarLoop]: trace histogram [42, 41, 41, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:40,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:40,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:46:40,722 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:40,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:40,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1571090449, now seen corresponding path program 6 times [2024-11-28 04:46:40,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:40,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096159794] [2024-11-28 04:46:40,723 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:40,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:41,110 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-28 04:46:41,111 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:44,600 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-28 04:46:44,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096159794] [2024-11-28 04:46:44,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096159794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:44,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590147649] [2024-11-28 04:46:44,601 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:44,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:44,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:44,605 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:44,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:48:56,465 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 42 check-sat command(s) [2024-11-28 04:48:56,465 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:48:56,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:48:56,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:48:57,136 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-28 04:48:57,136 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7503 backedges. 0 proven. 4961 refuted. 0 times theorem prover too weak. 2542 trivial. 0 not checked. [2024-11-28 04:49:00,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590147649] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:00,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:00,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 87 [2024-11-28 04:49:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924963299] [2024-11-28 04:49:00,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:00,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2024-11-28 04:49:00,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:00,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2024-11-28 04:49:00,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 04:49:00,791 INFO L87 Difference]: Start difference. First operand 420 states and 545 transitions. Second operand has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 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 04:49:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:04,344 INFO L93 Difference]: Finished difference Result 979 states and 1319 transitions. [2024-11-28 04:49:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 04:49:04,345 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 377 [2024-11-28 04:49:04,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:04,350 INFO L225 Difference]: With dead ends: 979 [2024-11-28 04:49:04,350 INFO L226 Difference]: Without dead ends: 849 [2024-11-28 04:49:04,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 711 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2024-11-28 04:49:04,354 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 1797 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 940 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:04,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 201 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 940 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:49:04,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-28 04:49:04,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 724. [2024-11-28 04:49:04,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 1.3526970954356847) internal successors, (978), 723 states have internal predecessors, (978), 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 04:49:04,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 978 transitions. [2024-11-28 04:49:04,394 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 978 transitions. Word has length 377 [2024-11-28 04:49:04,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:04,395 INFO L471 AbstractCegarLoop]: Abstraction has 724 states and 978 transitions. [2024-11-28 04:49:04,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.873563218390805) internal successors, (511), 87 states have internal predecessors, (511), 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 04:49:04,396 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 978 transitions. [2024-11-28 04:49:04,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-28 04:49:04,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:04,418 INFO L218 NwaCegarLoop]: trace histogram [84, 84, 84, 84, 84, 84, 43, 42, 42, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:04,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:04,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:49:04,619 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:04,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:04,620 INFO L85 PathProgramCache]: Analyzing trace with hash -306111771, now seen corresponding path program 7 times [2024-11-28 04:49:04,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:04,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854171248] [2024-11-28 04:49:04,620 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:49:04,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-28 04:49:14,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:49:14,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854171248] [2024-11-28 04:49:14,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854171248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:49:14,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849226164] [2024-11-28 04:49:14,260 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:49:14,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:14,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:49:14,262 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:49:14,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:49:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:14,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 1414 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-28 04:49:14,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:15,647 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-28 04:49:15,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:49:27,012 INFO L134 CoverageAnalysis]: Checked inductivity of 23667 backedges. 0 proven. 21000 refuted. 0 times theorem prover too weak. 2667 trivial. 0 not checked. [2024-11-28 04:49:27,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849226164] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:49:27,012 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:49:27,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87, 87] total 173 [2024-11-28 04:49:27,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497966761] [2024-11-28 04:49:27,013 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:49:27,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 173 states [2024-11-28 04:49:27,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:27,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 173 interpolants. [2024-11-28 04:49:27,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 04:49:27,029 INFO L87 Difference]: Start difference. First operand 724 states and 978 transitions. Second operand has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 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 04:49:54,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:54,374 INFO L93 Difference]: Finished difference Result 1842 states and 2568 transitions. [2024-11-28 04:49:54,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2024-11-28 04:49:54,375 INFO L78 Accepts]: Start accepts. Automaton has has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2024-11-28 04:49:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:54,383 INFO L225 Difference]: With dead ends: 1842 [2024-11-28 04:49:54,384 INFO L226 Difference]: Without dead ends: 1709 [2024-11-28 04:49:54,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1361 GetRequests, 1190 SyntacticMatches, 0 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=14878, Invalid=14878, Unknown=0, NotChecked=0, Total=29756 [2024-11-28 04:49:54,393 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4290 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 1887 mSolverCounterSat, 1111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 2998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1111 IncrementalHoareTripleChecker+Valid, 1887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:54,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4290 Valid, 386 Invalid, 2998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1111 Valid, 1887 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 04:49:54,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1709 states. [2024-11-28 04:49:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1709 to 1455. [2024-11-28 04:49:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 1.3528198074277855) internal successors, (1967), 1454 states have internal predecessors, (1967), 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 04:49:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1967 transitions. [2024-11-28 04:49:54,450 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1967 transitions. Word has length 638 [2024-11-28 04:49:54,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:54,452 INFO L471 AbstractCegarLoop]: Abstraction has 1455 states and 1967 transitions. [2024-11-28 04:49:54,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 173 states, 173 states have (on average 5.936416184971098) internal successors, (1027), 173 states have internal predecessors, (1027), 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 04:49:54,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1967 transitions. [2024-11-28 04:49:54,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1284 [2024-11-28 04:49:54,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:54,512 INFO L218 NwaCegarLoop]: trace histogram [170, 170, 170, 170, 170, 170, 86, 85, 85, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:54,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 04:49:54,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:54,713 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:54,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:54,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1597211577, now seen corresponding path program 8 times [2024-11-28 04:49:54,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:54,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293656179] [2024-11-28 04:49:54,714 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:49:54,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:49:55,094 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:49:55,096 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:28,763 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-28 04:50:28,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:50:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293656179] [2024-11-28 04:50:28,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293656179] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:50:28,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353240771] [2024-11-28 04:50:28,764 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:50:28,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:50:28,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:50:28,767 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:50:28,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:50:29,514 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:50:29,514 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:50:29,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 172 conjuncts are in the unsatisfiable core [2024-11-28 04:50:29,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:50:31,109 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-28 04:50:31,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:51:10,572 INFO L134 CoverageAnalysis]: Checked inductivity of 97240 backedges. 0 proven. 86360 refuted. 0 times theorem prover too weak. 10880 trivial. 0 not checked. [2024-11-28 04:51:10,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353240771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:51:10,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:51:10,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [173, 173, 173] total 345 [2024-11-28 04:51:10,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82167266] [2024-11-28 04:51:10,573 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:51:10,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 345 states [2024-11-28 04:51:10,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:10,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 345 interpolants. [2024-11-28 04:51:10,604 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59340, Invalid=59340, Unknown=0, NotChecked=0, Total=118680 [2024-11-28 04:51:10,606 INFO L87 Difference]: Start difference. First operand 1455 states and 1967 transitions. Second operand has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 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 05:00:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:00:10,455 INFO L93 Difference]: Finished difference Result 3691 states and 5148 transitions. [2024-11-28 05:00:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 344 states. [2024-11-28 05:00:10,457 INFO L78 Accepts]: Start accepts. Automaton has has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1283 [2024-11-28 05:00:10,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:00:10,474 INFO L225 Difference]: With dead ends: 3691 [2024-11-28 05:00:10,474 INFO L226 Difference]: Without dead ends: 3429 [2024-11-28 05:00:10,481 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2394 SyntacticMatches, 0 SemanticMatches, 343 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 51.4s TimeCoverageRelationStatistics Valid=59340, Invalid=59340, Unknown=0, NotChecked=0, Total=118680 [2024-11-28 05:00:10,482 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 9297 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 3791 mSolverCounterSat, 2233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9297 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 6024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2233 IncrementalHoareTripleChecker+Valid, 3791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:00:10,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9297 Valid, 736 Invalid, 6024 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2233 Valid, 3791 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 05:00:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3429 states. [2024-11-28 05:00:10,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3429 to 2917. [2024-11-28 05:00:10,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2917 states, 2916 states have (on average 1.352880658436214) internal successors, (3945), 2916 states have internal predecessors, (3945), 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 05:00:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2917 states to 2917 states and 3945 transitions. [2024-11-28 05:00:10,576 INFO L78 Accepts]: Start accepts. Automaton has 2917 states and 3945 transitions. Word has length 1283 [2024-11-28 05:00:10,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:00:10,579 INFO L471 AbstractCegarLoop]: Abstraction has 2917 states and 3945 transitions. [2024-11-28 05:00:10,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 345 states, 345 states have (on average 5.9681159420289855) internal successors, (2059), 345 states have internal predecessors, (2059), 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 05:00:10,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2917 states and 3945 transitions. [2024-11-28 05:00:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2574 [2024-11-28 05:00:10,618 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:00:10,618 INFO L218 NwaCegarLoop]: trace histogram [342, 342, 342, 342, 342, 342, 172, 171, 171, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:00:10,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:00:10,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 05:00:10,819 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:00:10,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:00:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash 602043175, now seen corresponding path program 9 times [2024-11-28 05:00:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:00:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951297943] [2024-11-28 05:00:10,821 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:00:10,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:00:14,396 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 172 check-sat command(s) [2024-11-28 05:00:14,396 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:00:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 394155 backedges. 0 proven. 43947 refuted. 0 times theorem prover too weak. 350208 trivial. 0 not checked. [2024-11-28 05:00:51,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:00:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951297943] [2024-11-28 05:00:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951297943] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:00:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067473553] [2024-11-28 05:00:51,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:00:51,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:00:51,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:00:51,588 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:00:51,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_766626f9-846b-4bb7-a5e8-0d020602e441/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process