./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum1.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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/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 befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:50,389 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:50,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:06:50,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:50,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,516 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,516 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,517 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,517 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,517 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,518 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:06:50,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,520 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,521 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,521 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,523 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,524 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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/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 -> befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df [2024-11-28 02:06:50,869 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:50,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:50,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:50,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:50,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:50,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-crafted/mapsum1.i [2024-11-28 02:06:54,073 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/data/efc52a837/aee88d5539174176895024876d03af58/FLAGdf5161eee [2024-11-28 02:06:54,361 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:54,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/sv-benchmarks/c/array-crafted/mapsum1.i [2024-11-28 02:06:54,370 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/data/efc52a837/aee88d5539174176895024876d03af58/FLAGdf5161eee [2024-11-28 02:06:54,662 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/data/efc52a837/aee88d5539174176895024876d03af58 [2024-11-28 02:06:54,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:54,668 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:54,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,671 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:54,676 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:54,677 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59713276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:54,700 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:54,921 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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2024-11-28 02:06:54,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,937 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:54,965 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_710c68fc-f601-41a6-ad1a-d58fec8c7d55/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2024-11-28 02:06:54,965 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:54,985 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:54,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54 WrapperNode [2024-11-28 02:06:54,987 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:54,989 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:54,989 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:54,989 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:54,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,011 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,034 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2024-11-28 02:06:55,036 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:55,036 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:55,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:55,039 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:55,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,071 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2024-11-28 02:06:55,071 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,071 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,089 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:55,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:55,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:55,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:55,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (1/1) ... [2024-11-28 02:06:55,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:55,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:55,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:55,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2024-11-28 02:06:55,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:55,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:55,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:06:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:06:55,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:06:55,258 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:55,260 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:55,430 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:55,430 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:55,443 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:55,444 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-28 02:06:55,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55 BoogieIcfgContainer [2024-11-28 02:06:55,444 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:55,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:55,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:55,453 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:55,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:54" (1/3) ... [2024-11-28 02:06:55,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4ab442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:54" (2/3) ... [2024-11-28 02:06:55,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f4ab442 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:55, skipping insertion in model container [2024-11-28 02:06:55,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:55" (3/3) ... [2024-11-28 02:06:55,456 INFO L128 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2024-11-28 02:06:55,473 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:55,474 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mapsum1.i that has 2 procedures, 27 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 02:06:55,545 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:55,561 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;@17b9691, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:55,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:06:55,567 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:55,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:06:55,576 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,577 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,578 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:55,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,584 INFO L85 PathProgramCache]: Analyzing trace with hash 7253488, now seen corresponding path program 1 times [2024-11-28 02:06:55,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452416605] [2024-11-28 02:06:55,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,984 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:06:55,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452416605] [2024-11-28 02:06:55,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452416605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:06:55,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103977586] [2024-11-28 02:06:55,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:56,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:56,017 INFO L87 Difference]: Start difference. First operand has 27 states, 21 states have (on average 1.380952380952381) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:06:56,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,092 INFO L93 Difference]: Finished difference Result 52 states and 71 transitions. [2024-11-28 02:06:56,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:56,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2024-11-28 02:06:56,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,102 INFO L225 Difference]: With dead ends: 52 [2024-11-28 02:06:56,102 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 02:06:56,105 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 02:06:56,108 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 02:06:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2024-11-28 02:06:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-28 02:06:56,142 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 29 [2024-11-28 02:06:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,143 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-28 02:06:56,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:06:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-28 02:06:56,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 02:06:56,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,145 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:06:56,145 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:56,146 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,146 INFO L85 PathProgramCache]: Analyzing trace with hash 1102674472, now seen corresponding path program 1 times [2024-11-28 02:06:56,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612820767] [2024-11-28 02:06:56,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 02:06:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612820767] [2024-11-28 02:06:56,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612820767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:56,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110854361] [2024-11-28 02:06:56,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,337 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:06:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,501 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:06:56,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:56,547 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:06:56,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:56,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110854361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:56,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:06:56,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846454018] [2024-11-28 02:06:56,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:56,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:56,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,551 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:06:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,573 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2024-11-28 02:06:56,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:56,576 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2024-11-28 02:06:56,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,577 INFO L225 Difference]: With dead ends: 43 [2024-11-28 02:06:56,577 INFO L226 Difference]: Without dead ends: 26 [2024-11-28 02:06:56,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,578 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,579 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 48 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-28 02:06:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2024-11-28 02:06:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2024-11-28 02:06:56,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 31 [2024-11-28 02:06:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,591 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2024-11-28 02:06:56,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:06:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2024-11-28 02:06:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 02:06:56,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,594 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:56,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:06:56,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,795 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:56,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,796 INFO L85 PathProgramCache]: Analyzing trace with hash 184265188, now seen corresponding path program 1 times [2024-11-28 02:06:56,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734754294] [2024-11-28 02:06:56,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,965 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:06:56,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734754294] [2024-11-28 02:06:56,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734754294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:56,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255644110] [2024-11-28 02:06:56,967 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:06:57,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 02:06:57,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:06:57,090 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255644110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-28 02:06:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154125781] [2024-11-28 02:06:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,091 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,092 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:57,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:57,093 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:06:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,111 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2024-11-28 02:06:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:57,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-28 02:06:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,113 INFO L225 Difference]: With dead ends: 40 [2024-11-28 02:06:57,114 INFO L226 Difference]: Without dead ends: 27 [2024-11-28 02:06:57,114 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:57,115 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 46 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:57,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-28 02:06:57,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2024-11-28 02:06:57,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:57,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2024-11-28 02:06:57,121 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 37 [2024-11-28 02:06:57,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,123 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2024-11-28 02:06:57,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:06:57,124 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2024-11-28 02:06:57,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 02:06:57,125 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,125 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:57,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:06:57,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:57,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1292905760, now seen corresponding path program 1 times [2024-11-28 02:06:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944314875] [2024-11-28 02:06:57,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:06:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944314875] [2024-11-28 02:06:57,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944314875] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:57,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217244024] [2024-11-28 02:06:57,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:57,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:57,487 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:57,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:06:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:06:57,612 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:06:57,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:06:57,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217244024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:57,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:57,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:06:57,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304849916] [2024-11-28 02:06:57,720 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:06:57,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:06:57,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:06:57,722 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:06:57,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:57,766 INFO L93 Difference]: Finished difference Result 53 states and 63 transitions. [2024-11-28 02:06:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:06:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 39 [2024-11-28 02:06:57,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:57,768 INFO L225 Difference]: With dead ends: 53 [2024-11-28 02:06:57,768 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 02:06:57,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:06:57,769 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:57,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 02:06:57,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-28 02:06:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 27 states have internal predecessors, (30), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:57,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2024-11-28 02:06:57,780 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 39 [2024-11-28 02:06:57,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,780 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2024-11-28 02:06:57,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:06:57,780 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2024-11-28 02:06:57,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 02:06:57,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,781 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:57,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:57,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:57,985 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:57,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1934267756, now seen corresponding path program 2 times [2024-11-28 02:06:57,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886091563] [2024-11-28 02:06:57,987 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:57,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,042 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:58,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 02:06:58,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886091563] [2024-11-28 02:06:58,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886091563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:58,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132946218] [2024-11-28 02:06:58,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:58,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:58,162 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:58,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:06:58,256 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:58,257 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:06:58,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:06:58,344 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:58,479 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 02:06:58,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132946218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:58,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:58,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-28 02:06:58,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403683535] [2024-11-28 02:06:58,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:06:58,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:06:58,481 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:06:58,483 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:06:58,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,587 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2024-11-28 02:06:58,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:06:58,590 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2024-11-28 02:06:58,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,592 INFO L225 Difference]: With dead ends: 68 [2024-11-28 02:06:58,592 INFO L226 Difference]: Without dead ends: 47 [2024-11-28 02:06:58,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:06:58,593 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 3 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:58,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 85 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:06:58,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-28 02:06:58,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2024-11-28 02:06:58,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 41 states have (on average 1.0731707317073171) internal successors, (44), 41 states have internal predecessors, (44), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2024-11-28 02:06:58,607 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 45 [2024-11-28 02:06:58,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:58,608 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2024-11-28 02:06:58,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 02:06:58,609 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2024-11-28 02:06:58,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:06:58,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,612 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:58,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:58,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,813 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:58,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1427436472, now seen corresponding path program 3 times [2024-11-28 02:06:58,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80351525] [2024-11-28 02:06:58,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:06:58,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,858 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:06:58,859 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:06:58,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80351525] [2024-11-28 02:06:58,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80351525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:58,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537729659] [2024-11-28 02:06:58,954 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:06:58,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:58,956 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:58,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:06:59,058 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:06:59,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:59,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:06:59,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:59,087 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:06:59,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:59,146 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 02:06:59,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537729659] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:59,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:59,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 02:06:59,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572280774] [2024-11-28 02:06:59,147 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:06:59,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:06:59,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,148 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:06:59,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:59,182 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2024-11-28 02:06:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:06:59,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 63 [2024-11-28 02:06:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:59,183 INFO L225 Difference]: With dead ends: 75 [2024-11-28 02:06:59,183 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 02:06:59,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:06:59,184 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:59,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 71 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 02:06:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-11-28 02:06:59,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 49 states have (on average 1.0612244897959184) internal successors, (52), 49 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:06:59,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2024-11-28 02:06:59,191 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 63 [2024-11-28 02:06:59,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:59,191 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2024-11-28 02:06:59,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:06:59,192 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2024-11-28 02:06:59,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 02:06:59,193 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:59,193 INFO L218 NwaCegarLoop]: trace histogram [18, 18, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:59,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:59,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:59,397 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:06:59,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:59,398 INFO L85 PathProgramCache]: Analyzing trace with hash 190778536, now seen corresponding path program 4 times [2024-11-28 02:06:59,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:59,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087382195] [2024-11-28 02:06:59,398 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:06:59,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:59,479 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:06:59,479 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:59,785 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 02:06:59,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087382195] [2024-11-28 02:06:59,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087382195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:59,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927389024] [2024-11-28 02:06:59,786 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:06:59,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:59,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:59,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:59,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:06:59,935 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:06:59,936 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:59,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:06:59,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:59,980 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 02:06:59,980 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 176 proven. 36 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 02:07:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927389024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:00,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 02:07:00,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113475500] [2024-11-28 02:07:00,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:07:00,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:07:00,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:07:00,192 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:00,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:00,270 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2024-11-28 02:07:00,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:07:00,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 87 [2024-11-28 02:07:00,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:00,272 INFO L225 Difference]: With dead ends: 99 [2024-11-28 02:07:00,273 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 02:07:00,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:07:00,274 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:00,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 163 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:00,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 02:07:00,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2024-11-28 02:07:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.0461538461538462) internal successors, (68), 65 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:00,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2024-11-28 02:07:00,293 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 87 [2024-11-28 02:07:00,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:00,294 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2024-11-28 02:07:00,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:00,294 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2024-11-28 02:07:00,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-28 02:07:00,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:00,296 INFO L218 NwaCegarLoop]: trace histogram [42, 42, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:00,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:07:00,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:00,497 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:00,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1817955976, now seen corresponding path program 5 times [2024-11-28 02:07:00,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180358379] [2024-11-28 02:07:00,500 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:00,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,820 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-28 02:07:00,820 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2024-11-28 02:07:01,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:01,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180358379] [2024-11-28 02:07:01,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180358379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:01,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091780534] [2024-11-28 02:07:01,452 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:01,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:01,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:01,454 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:01,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:07:01,885 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-28 02:07:01,886 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:07:01,897 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:01,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 844 proven. 196 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2024-11-28 02:07:01,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:02,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 0 proven. 1044 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2024-11-28 02:07:02,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091780534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:02,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:02,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2024-11-28 02:07:02,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434167105] [2024-11-28 02:07:02,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:02,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:07:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:02,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:07:02,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:07:02,593 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:07:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:02,734 INFO L93 Difference]: Finished difference Result 147 states and 172 transitions. [2024-11-28 02:07:02,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 02:07:02,735 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2024-11-28 02:07:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:02,736 INFO L225 Difference]: With dead ends: 147 [2024-11-28 02:07:02,736 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 02:07:02,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:07:02,738 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:02,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 186 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 02:07:02,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-28 02:07:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 97 states have (on average 1.0309278350515463) internal successors, (100), 97 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:02,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2024-11-28 02:07:02,759 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 135 [2024-11-28 02:07:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:02,759 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2024-11-28 02:07:02,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.71875) internal successors, (87), 32 states have internal predecessors, (87), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:07:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2024-11-28 02:07:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-28 02:07:02,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:02,766 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:02,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:07:02,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:02,967 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:02,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1388867000, now seen corresponding path program 6 times [2024-11-28 02:07:02,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557408694] [2024-11-28 02:07:02,968 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:02,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:03,031 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:07:03,031 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:03,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8395 trivial. 0 not checked. [2024-11-28 02:07:03,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557408694] [2024-11-28 02:07:03,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557408694] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:03,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430562058] [2024-11-28 02:07:03,086 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:03,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:03,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:03,088 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:03,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:07:03,248 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2024-11-28 02:07:03,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:03,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:07:03,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 3730 proven. 1 refuted. 0 times theorem prover too weak. 4665 trivial. 0 not checked. [2024-11-28 02:07:03,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 8396 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8395 trivial. 0 not checked. [2024-11-28 02:07:03,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430562058] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:03,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:03,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 02:07:03,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504326498] [2024-11-28 02:07:03,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:03,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:07:03,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:03,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:07:03,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:03,335 INFO L87 Difference]: Start difference. First operand 102 states and 106 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:07:03,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:03,368 INFO L93 Difference]: Finished difference Result 179 states and 186 transitions. [2024-11-28 02:07:03,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:03,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 231 [2024-11-28 02:07:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:03,372 INFO L225 Difference]: With dead ends: 179 [2024-11-28 02:07:03,372 INFO L226 Difference]: Without dead ends: 108 [2024-11-28 02:07:03,375 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 459 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:07:03,376 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:03,376 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-28 02:07:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-28 02:07:03,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 103 states have (on average 1.029126213592233) internal successors, (106), 103 states have internal predecessors, (106), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2024-11-28 02:07:03,391 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 231 [2024-11-28 02:07:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:03,393 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2024-11-28 02:07:03,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:07:03,393 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2024-11-28 02:07:03,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 02:07:03,396 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:03,396 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:03,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:07:03,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:03,603 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:03,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:03,604 INFO L85 PathProgramCache]: Analyzing trace with hash 431347004, now seen corresponding path program 7 times [2024-11-28 02:07:03,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:03,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793889573] [2024-11-28 02:07:03,604 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:07:03,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,487 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:04,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793889573] [2024-11-28 02:07:04,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793889573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:04,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290864934] [2024-11-28 02:07:04,488 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:07:04,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:04,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:04,490 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:04,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:07:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 692 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:07:04,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:04,837 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:04,837 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:05,171 INFO L134 CoverageAnalysis]: Checked inductivity of 8411 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:05,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290864934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:05,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:05,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 02:07:05,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270853429] [2024-11-28 02:07:05,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:05,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:07:05,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:05,174 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:07:05,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:07:05,174 INFO L87 Difference]: Start difference. First operand 108 states and 112 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:07:05,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:05,287 INFO L93 Difference]: Finished difference Result 217 states and 236 transitions. [2024-11-28 02:07:05,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:07:05,288 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 237 [2024-11-28 02:07:05,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:05,290 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:07:05,291 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 02:07:05,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:07:05,293 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:05,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:05,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 02:07:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-28 02:07:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 127 states have (on average 1.0236220472440944) internal successors, (130), 127 states have internal predecessors, (130), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 136 transitions. [2024-11-28 02:07:05,308 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 136 transitions. Word has length 237 [2024-11-28 02:07:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:05,308 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 136 transitions. [2024-11-28 02:07:05,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:07:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 136 transitions. [2024-11-28 02:07:05,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2024-11-28 02:07:05,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:05,312 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 22, 22, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:05,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:05,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:07:05,517 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:05,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:05,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1654567412, now seen corresponding path program 8 times [2024-11-28 02:07:05,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:05,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37051468] [2024-11-28 02:07:05,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:05,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:05,603 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:05,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:07,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37051468] [2024-11-28 02:07:07,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37051468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:07,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985074522] [2024-11-28 02:07:07,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:07,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:07,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:07:07,405 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:07,405 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:07,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:07:07,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:07,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:07,551 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 8795 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 8311 trivial. 0 not checked. [2024-11-28 02:07:08,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985074522] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:08,666 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:08,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 02:07:08,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192737318] [2024-11-28 02:07:08,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:08,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 02:07:08,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:08,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 02:07:08,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:07:08,671 INFO L87 Difference]: Start difference. First operand 132 states and 136 transitions. Second operand has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:07:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:08,855 INFO L93 Difference]: Finished difference Result 265 states and 296 transitions. [2024-11-28 02:07:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 02:07:08,856 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 261 [2024-11-28 02:07:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:08,857 INFO L225 Difference]: With dead ends: 265 [2024-11-28 02:07:08,857 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 02:07:08,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 545 GetRequests, 498 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 02:07:08,860 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:08,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 113 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 02:07:08,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-28 02:07:08,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.0171428571428571) internal successors, (178), 175 states have internal predecessors, (178), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:08,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 184 transitions. [2024-11-28 02:07:08,877 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 184 transitions. Word has length 261 [2024-11-28 02:07:08,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:08,877 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 184 transitions. [2024-11-28 02:07:08,877 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4081632653061225) internal successors, (118), 49 states have internal predecessors, (118), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:07:08,877 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 184 transitions. [2024-11-28 02:07:08,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2024-11-28 02:07:08,881 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:08,881 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 46, 46, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:08,892 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 02:07:09,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:07:09,086 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:09,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:09,086 INFO L85 PathProgramCache]: Analyzing trace with hash 487321516, now seen corresponding path program 9 times [2024-11-28 02:07:09,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:09,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534469105] [2024-11-28 02:07:09,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:07:09,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:09,200 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 02:07:09,200 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2024-11-28 02:07:09,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534469105] [2024-11-28 02:07:09,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534469105] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:09,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386023329] [2024-11-28 02:07:09,302 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:07:09,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:09,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:09,304 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:09,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:07:09,571 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 02:07:09,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:09,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:07:09,578 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:09,618 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 3730 proven. 16 refuted. 0 times theorem prover too weak. 6681 trivial. 0 not checked. [2024-11-28 02:07:09,619 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10427 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10411 trivial. 0 not checked. [2024-11-28 02:07:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386023329] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:09,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:09,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 02:07:09,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850626632] [2024-11-28 02:07:09,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:09,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 02:07:09,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:09,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 02:07:09,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:07:09,719 INFO L87 Difference]: Start difference. First operand 180 states and 184 transitions. Second operand has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:07:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:09,783 INFO L93 Difference]: Finished difference Result 263 states and 273 transitions. [2024-11-28 02:07:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:07:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 309 [2024-11-28 02:07:09,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:09,786 INFO L225 Difference]: With dead ends: 263 [2024-11-28 02:07:09,786 INFO L226 Difference]: Without dead ends: 192 [2024-11-28 02:07:09,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 612 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 02:07:09,787 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:09,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 130 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-28 02:07:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2024-11-28 02:07:09,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 187 states have (on average 1.0160427807486632) internal successors, (190), 187 states have internal predecessors, (190), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 196 transitions. [2024-11-28 02:07:09,800 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 196 transitions. Word has length 309 [2024-11-28 02:07:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:09,801 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 196 transitions. [2024-11-28 02:07:09,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 13 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:07:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 196 transitions. [2024-11-28 02:07:09,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-28 02:07:09,805 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:09,806 INFO L218 NwaCegarLoop]: trace histogram [90, 90, 46, 46, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:09,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:10,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:07:10,007 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:10,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:10,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1932887916, now seen corresponding path program 10 times [2024-11-28 02:07:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:10,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969085941] [2024-11-28 02:07:10,008 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:07:10,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:10,247 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:07:10,251 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 0 proven. 4628 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-28 02:07:12,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969085941] [2024-11-28 02:07:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969085941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:12,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024013913] [2024-11-28 02:07:12,246 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:07:12,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:12,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:12,249 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:12,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:07:12,757 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:07:12,758 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:12,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 02:07:12,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:12,912 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-28 02:07:12,912 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 10511 backedges. 3728 proven. 900 refuted. 0 times theorem prover too weak. 5883 trivial. 0 not checked. [2024-11-28 02:07:14,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024013913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:14,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:14,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2024-11-28 02:07:14,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24314393] [2024-11-28 02:07:14,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:14,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2024-11-28 02:07:14,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:14,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2024-11-28 02:07:14,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 02:07:14,768 INFO L87 Difference]: Start difference. First operand 192 states and 196 transitions. Second operand has 64 states, 64 states have (on average 2.390625) internal successors, (153), 64 states have internal predecessors, (153), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:15,045 INFO L93 Difference]: Finished difference Result 351 states and 392 transitions. [2024-11-28 02:07:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-28 02:07:15,046 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.390625) internal successors, (153), 64 states have internal predecessors, (153), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 321 [2024-11-28 02:07:15,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:15,048 INFO L225 Difference]: With dead ends: 351 [2024-11-28 02:07:15,048 INFO L226 Difference]: Without dead ends: 256 [2024-11-28 02:07:15,050 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 673 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 02:07:15,051 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:15,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 186 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-28 02:07:15,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-28 02:07:15,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 251 states have (on average 1.0119521912350598) internal successors, (254), 251 states have internal predecessors, (254), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:07:15,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 260 transitions. [2024-11-28 02:07:15,065 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 260 transitions. Word has length 321 [2024-11-28 02:07:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:15,065 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 260 transitions. [2024-11-28 02:07:15,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.390625) internal successors, (153), 64 states have internal predecessors, (153), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 260 transitions. [2024-11-28 02:07:15,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2024-11-28 02:07:15,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:15,075 INFO L218 NwaCegarLoop]: trace histogram [186, 186, 46, 46, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:15,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:07:15,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:07:15,279 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:07:15,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:15,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1494507500, now seen corresponding path program 11 times [2024-11-28 02:07:15,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:15,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072552826] [2024-11-28 02:07:15,280 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:15,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:23,542 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2024-11-28 02:07:23,543 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:28,907 INFO L134 CoverageAnalysis]: Checked inductivity of 37199 backedges. 0 proven. 19476 refuted. 0 times theorem prover too weak. 17723 trivial. 0 not checked. [2024-11-28 02:07:28,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072552826] [2024-11-28 02:07:28,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072552826] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:28,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724558312] [2024-11-28 02:07:28,908 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:28,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:28,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:28,911 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:28,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:21:02,955 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 126 check-sat command(s) [2024-11-28 02:21:02,955 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:03,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 1481 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 02:21:03,085 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 37199 backedges. 15628 proven. 3844 refuted. 0 times theorem prover too weak. 17727 trivial. 0 not checked. [2024-11-28 02:21:03,405 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37199 backedges. 0 proven. 19476 refuted. 0 times theorem prover too weak. 17723 trivial. 0 not checked. [2024-11-28 02:21:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724558312] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:08,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:08,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 102 [2024-11-28 02:21:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659842037] [2024-11-28 02:21:08,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:08,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 102 states [2024-11-28 02:21:08,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:08,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2024-11-28 02:21:08,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2024-11-28 02:21:08,124 INFO L87 Difference]: Start difference. First operand 256 states and 260 transitions. Second operand has 102 states, 102 states have (on average 2.2450980392156863) internal successors, (229), 102 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:21:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:08,599 INFO L93 Difference]: Finished difference Result 491 states and 538 transitions. [2024-11-28 02:21:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-28 02:21:08,600 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.2450980392156863) internal successors, (229), 102 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 513 [2024-11-28 02:21:08,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:08,605 INFO L225 Difference]: With dead ends: 491 [2024-11-28 02:21:08,605 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 02:21:08,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1089 GetRequests, 963 SyntacticMatches, 26 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1287 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=5151, Invalid=5151, Unknown=0, NotChecked=0, Total=10302 [2024-11-28 02:21:08,610 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:08,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:21:08,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 02:21:08,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2024-11-28 02:21:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 327 states have (on average 1.0091743119266054) internal successors, (330), 327 states have internal predecessors, (330), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:21:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 336 transitions. [2024-11-28 02:21:08,637 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 336 transitions. Word has length 513 [2024-11-28 02:21:08,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:08,638 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 336 transitions. [2024-11-28 02:21:08,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 102 states, 102 states have (on average 2.2450980392156863) internal successors, (229), 102 states have internal predecessors, (229), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:21:08,640 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 336 transitions. [2024-11-28 02:21:08,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 742 [2024-11-28 02:21:08,669 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:08,669 INFO L218 NwaCegarLoop]: trace histogram [300, 300, 46, 46, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:08,788 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:21:08,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:21:08,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:08,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:08,871 INFO L85 PathProgramCache]: Analyzing trace with hash -10283780, now seen corresponding path program 12 times [2024-11-28 02:21:08,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:08,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177437433] [2024-11-28 02:21:08,871 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:21:08,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:09,190 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 02:21:09,190 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:09,525 INFO L134 CoverageAnalysis]: Checked inductivity of 92831 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 92731 trivial. 0 not checked. [2024-11-28 02:21:09,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177437433] [2024-11-28 02:21:09,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177437433] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:09,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026192881] [2024-11-28 02:21:09,526 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:21:09,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:09,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:09,529 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:21:10,947 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2024-11-28 02:21:10,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:10,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:21:10,965 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 92831 backedges. 40410 proven. 100 refuted. 0 times theorem prover too weak. 52321 trivial. 0 not checked. [2024-11-28 02:21:11,053 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:11,434 INFO L134 CoverageAnalysis]: Checked inductivity of 92831 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 92731 trivial. 0 not checked. [2024-11-28 02:21:11,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026192881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:11,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:11,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 02:21:11,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811448843] [2024-11-28 02:21:11,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:11,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 02:21:11,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:11,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 02:21:11,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:21:11,439 INFO L87 Difference]: Start difference. First operand 332 states and 336 transitions. Second operand has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:21:11,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:11,528 INFO L93 Difference]: Finished difference Result 567 states and 583 transitions. [2024-11-28 02:21:11,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 02:21:11,529 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 741 [2024-11-28 02:21:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:11,536 INFO L225 Difference]: With dead ends: 567 [2024-11-28 02:21:11,536 INFO L226 Difference]: Without dead ends: 356 [2024-11-28 02:21:11,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 1470 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 02:21:11,540 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:11,540 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 67 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:21:11,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-28 02:21:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2024-11-28 02:21:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 351 states have (on average 1.0085470085470085) internal successors, (354), 351 states have internal predecessors, (354), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:21:11,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 360 transitions. [2024-11-28 02:21:11,561 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 360 transitions. Word has length 741 [2024-11-28 02:21:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:11,563 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 360 transitions. [2024-11-28 02:21:11,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.8) internal successors, (70), 25 states have internal predecessors, (70), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 02:21:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 360 transitions. [2024-11-28 02:21:11,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 766 [2024-11-28 02:21:11,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:11,571 INFO L218 NwaCegarLoop]: trace histogram [300, 300, 46, 46, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:11,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 02:21:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 02:21:11,772 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash 910990028, now seen corresponding path program 13 times [2024-11-28 02:21:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036748100] [2024-11-28 02:21:11,773 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:21:11,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:11,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:17,007 INFO L134 CoverageAnalysis]: Checked inductivity of 93215 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:17,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:17,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036748100] [2024-11-28 02:21:17,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036748100] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:17,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102758913] [2024-11-28 02:21:17,008 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:21:17,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:17,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:17,011 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:17,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:21:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:17,810 INFO L256 TraceCheckSpWp]: Trace formula consists of 2192 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 02:21:17,824 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:18,038 INFO L134 CoverageAnalysis]: Checked inductivity of 93215 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:18,038 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:21,630 INFO L134 CoverageAnalysis]: Checked inductivity of 93215 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:21,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102758913] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:21,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:21,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2024-11-28 02:21:21,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359473762] [2024-11-28 02:21:21,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:21,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2024-11-28 02:21:21,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:21,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2024-11-28 02:21:21,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:21:21,638 INFO L87 Difference]: Start difference. First operand 356 states and 360 transitions. Second operand has 97 states, 97 states have (on average 2.2061855670103094) internal successors, (214), 97 states have internal predecessors, (214), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:21:22,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:22,049 INFO L93 Difference]: Finished difference Result 713 states and 768 transitions. [2024-11-28 02:21:22,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-28 02:21:22,050 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.2061855670103094) internal successors, (214), 97 states have internal predecessors, (214), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 765 [2024-11-28 02:21:22,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:22,054 INFO L225 Difference]: With dead ends: 713 [2024-11-28 02:21:22,054 INFO L226 Difference]: Without dead ends: 452 [2024-11-28 02:21:22,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1577 GetRequests, 1482 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2024-11-28 02:21:22,059 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 2 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:22,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 91 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:21:22,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-28 02:21:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2024-11-28 02:21:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 447 states have (on average 1.0067114093959733) internal successors, (450), 447 states have internal predecessors, (450), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:21:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 456 transitions. [2024-11-28 02:21:22,081 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 456 transitions. Word has length 765 [2024-11-28 02:21:22,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:22,082 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 456 transitions. [2024-11-28 02:21:22,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 2.2061855670103094) internal successors, (214), 97 states have internal predecessors, (214), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:21:22,082 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 456 transitions. [2024-11-28 02:21:22,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-28 02:21:22,091 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:22,092 INFO L218 NwaCegarLoop]: trace histogram [300, 300, 94, 94, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:22,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:21:22,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:21:22,297 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:22,297 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:22,298 INFO L85 PathProgramCache]: Analyzing trace with hash -268214772, now seen corresponding path program 14 times [2024-11-28 02:21:22,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:22,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064241078] [2024-11-28 02:21:22,298 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:21:22,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:22,641 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:21:22,641 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:34,227 INFO L134 CoverageAnalysis]: Checked inductivity of 99935 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:34,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:34,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064241078] [2024-11-28 02:21:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064241078] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:34,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132079826] [2024-11-28 02:21:34,228 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:21:34,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:34,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:34,230 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:34,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:21:35,051 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:21:35,051 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:35,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 2624 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 02:21:35,075 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:35,476 INFO L134 CoverageAnalysis]: Checked inductivity of 99935 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:35,476 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:40,312 INFO L134 CoverageAnalysis]: Checked inductivity of 99935 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 91099 trivial. 0 not checked. [2024-11-28 02:21:40,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132079826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:40,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:40,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 103 [2024-11-28 02:21:40,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010844975] [2024-11-28 02:21:40,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:40,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2024-11-28 02:21:40,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:40,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2024-11-28 02:21:40,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:21:40,320 INFO L87 Difference]: Start difference. First operand 452 states and 456 transitions. Second operand has 103 states, 103 states have (on average 2.2135922330097086) internal successors, (228), 103 states have internal predecessors, (228), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:21:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:40,812 INFO L93 Difference]: Finished difference Result 725 states and 738 transitions. [2024-11-28 02:21:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-28 02:21:40,813 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.2135922330097086) internal successors, (228), 103 states have internal predecessors, (228), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 861 [2024-11-28 02:21:40,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:40,817 INFO L225 Difference]: With dead ends: 725 [2024-11-28 02:21:40,817 INFO L226 Difference]: Without dead ends: 464 [2024-11-28 02:21:40,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1817 GetRequests, 1626 SyntacticMatches, 90 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4831 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:21:40,821 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:40,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 201 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:21:40,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-28 02:21:40,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 464. [2024-11-28 02:21:40,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 459 states have (on average 1.0065359477124183) internal successors, (462), 459 states have internal predecessors, (462), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 02:21:40,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 468 transitions. [2024-11-28 02:21:40,847 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 468 transitions. Word has length 861 [2024-11-28 02:21:40,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:40,848 INFO L471 AbstractCegarLoop]: Abstraction has 464 states and 468 transitions. [2024-11-28 02:21:40,848 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 2.2135922330097086) internal successors, (228), 103 states have internal predecessors, (228), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-28 02:21:40,848 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 468 transitions. [2024-11-28 02:21:40,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 874 [2024-11-28 02:21:40,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:40,858 INFO L218 NwaCegarLoop]: trace histogram [300, 300, 100, 100, 22, 22, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:21:40,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:21:41,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 02:21:41,059 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:41,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1846765452, now seen corresponding path program 15 times [2024-11-28 02:21:41,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:41,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378117697] [2024-11-28 02:21:41,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:21:41,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:41,611 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 02:21:41,612 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 101099 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 100615 trivial. 0 not checked. [2024-11-28 02:21:42,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:42,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378117697] [2024-11-28 02:21:42,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378117697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:42,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615175925] [2024-11-28 02:21:42,520 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:21:42,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:42,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:42,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_710c68fc-f601-41a6-ad1a-d58fec8c7d55/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:21:50,325 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2024-11-28 02:21:50,325 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:21:50,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 02:21:50,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:21:50,503 INFO L134 CoverageAnalysis]: Checked inductivity of 101099 backedges. 40609 proven. 484 refuted. 0 times theorem prover too weak. 60006 trivial. 0 not checked. [2024-11-28 02:21:50,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:21:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 101099 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 100615 trivial. 0 not checked. [2024-11-28 02:21:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615175925] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:21:51,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:21:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27, 25] total 51 [2024-11-28 02:21:51,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131314662] [2024-11-28 02:21:51,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:21:51,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 02:21:51,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:51,642 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 02:21:51,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1181, Invalid=1369, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 02:21:51,642 INFO L87 Difference]: Start difference. First operand 464 states and 468 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 51 states have internal predecessors, (121), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)