./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC --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 c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:04:47,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:04:48,025 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:04:48,034 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:04:48,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:04:48,080 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:04:48,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:04:48,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:04:48,082 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:04:48,083 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:04:48,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:04:48,084 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:04:48,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:04:48,085 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:04:48,085 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:04:48,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:04:48,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:04:48,088 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:04:48,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:04:48,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:04:48,088 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:04:48,088 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:04:48,089 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:04:48,089 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:04:48,089 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:04:48,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:04:48,089 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:04:48,089 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:04:48,090 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:04:48,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:04:48,090 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:04:48,090 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:04:48,091 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:04:48,091 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:04:48,091 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_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC 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 -> c82f9f6b2ddd9cc29ac088c74e4e84d5622d389d0c95b67e6fa7eaa0a2f36f61 [2024-11-24 00:04:48,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:04:48,462 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:04:48,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:04:48,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:04:48,467 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:04:48,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i [2024-11-24 00:04:51,864 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/data/1d462b4c8/2f1f5b9c70484d7989627037a40c0ffe/FLAGfc520f613 [2024-11-24 00:04:52,187 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:04:52,188 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i [2024-11-24 00:04:52,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/data/1d462b4c8/2f1f5b9c70484d7989627037a40c0ffe/FLAGfc520f613 [2024-11-24 00:04:52,211 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/data/1d462b4c8/2f1f5b9c70484d7989627037a40c0ffe [2024-11-24 00:04:52,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:04:52,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:04:52,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:04:52,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:04:52,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:04:52,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f5c1399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52, skipping insertion in model container [2024-11-24 00:04:52,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,245 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:04:52,448 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_de65fe69-3d1f-40ab-b76c-a30febf2de55/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-11-24 00:04:52,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:04:52,477 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:04:52,490 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_de65fe69-3d1f-40ab-b76c-a30febf2de55/sv-benchmarks/c/array-examples/standard_minInArray_ground-1.i[821,834] [2024-11-24 00:04:52,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:04:52,524 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:04:52,525 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52 WrapperNode [2024-11-24 00:04:52,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:04:52,529 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:04:52,529 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:04:52,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:04:52,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,549 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,566 INFO L138 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 56 [2024-11-24 00:04:52,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:04:52,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:04:52,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:04:52,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:04:52,576 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,578 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,590 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-24 00:04:52,590 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,590 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,599 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,606 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,610 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,611 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:04:52,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:04:52,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:04:52,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:04:52,617 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (1/1) ... [2024-11-24 00:04:52,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:04:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:52,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:04:52,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:04:52,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:04:52,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:04:52,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:04:52,773 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:04:52,777 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:04:52,942 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2024-11-24 00:04:52,942 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:04:52,951 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:04:52,952 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-24 00:04:52,952 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:04:52 BoogieIcfgContainer [2024-11-24 00:04:52,952 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:04:52,955 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:04:52,955 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:04:52,961 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:04:52,961 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:04:52" (1/3) ... [2024-11-24 00:04:52,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b8069c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:04:52, skipping insertion in model container [2024-11-24 00:04:52,962 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:04:52" (2/3) ... [2024-11-24 00:04:52,962 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b8069c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:04:52, skipping insertion in model container [2024-11-24 00:04:52,963 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:04:52" (3/3) ... [2024-11-24 00:04:52,964 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-1.i [2024-11-24 00:04:52,984 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:04:52,986 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_minInArray_ground-1.i that has 1 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-24 00:04:53,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:04:53,083 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;@7f33d400, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:04:53,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:04:53,088 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-24 00:04:53,095 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:53,096 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:53,096 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:53,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:53,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1484016529, now seen corresponding path program 1 times [2024-11-24 00:04:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:53,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116591361] [2024-11-24 00:04:53,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:53,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:04:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:53,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116591361] [2024-11-24 00:04:53,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116591361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:53,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:04:53,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:04:53,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839661817] [2024-11-24 00:04:53,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:53,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:04:53,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:53,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:04:53,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:04:53,406 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5) internal successors, (27), 19 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:53,446 INFO L93 Difference]: Finished difference Result 38 states and 52 transitions. [2024-11-24 00:04:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:04:53,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-24 00:04:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:53,456 INFO L225 Difference]: With dead ends: 38 [2024-11-24 00:04:53,456 INFO L226 Difference]: Without dead ends: 18 [2024-11-24 00:04:53,460 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 [2024-11-24 00:04:53,465 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 1 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 38 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 [2024-11-24 00:04:53,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 38 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:04:53,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2024-11-24 00:04:53,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2024-11-24 00:04:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2024-11-24 00:04:53,509 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 10 [2024-11-24 00:04:53,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:53,509 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2024-11-24 00:04:53,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,509 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2024-11-24 00:04:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:04:53,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:53,513 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:53,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:04:53,513 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:53,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:53,514 INFO L85 PathProgramCache]: Analyzing trace with hash 906925312, now seen corresponding path program 1 times [2024-11-24 00:04:53,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:53,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503884037] [2024-11-24 00:04:53,514 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:53,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:53,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:53,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:04:53,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503884037] [2024-11-24 00:04:53,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503884037] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:04:53,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97689766] [2024-11-24 00:04:53,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:53,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:53,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:53,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:04:53,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:04:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:53,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 00:04:53,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:04:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:53,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:04:53,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97689766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:04:53,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:04:53,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-24 00:04:53,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100541169] [2024-11-24 00:04:53,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:04:53,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:04:53,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:53,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:04:53,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:04:53,760 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:53,805 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2024-11-24 00:04:53,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:04:53,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 00:04:53,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:53,808 INFO L225 Difference]: With dead ends: 28 [2024-11-24 00:04:53,808 INFO L226 Difference]: Without dead ends: 21 [2024-11-24 00:04:53,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:04:53,809 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:53,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 27 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:04:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-24 00:04:53,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2024-11-24 00:04:53,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2024-11-24 00:04:53,817 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 12 [2024-11-24 00:04:53,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:53,817 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2024-11-24 00:04:53,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:53,818 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2024-11-24 00:04:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-24 00:04:53,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:53,819 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:53,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:04:54,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:54,020 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:54,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:54,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1422680600, now seen corresponding path program 1 times [2024-11-24 00:04:54,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:54,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312291142] [2024-11-24 00:04:54,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:54,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:54,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312291142] [2024-11-24 00:04:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312291142] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:04:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215621670] [2024-11-24 00:04:54,173 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:04:54,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:54,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:54,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:04:54,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:04:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:04:54,260 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:04:54,261 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:04:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:54,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:04:54,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:54,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215621670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:04:54,346 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:04:54,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-24 00:04:54,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676841659] [2024-11-24 00:04:54,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:04:54,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:04:54,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:54,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:04:54,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:04:54,348 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:54,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:54,391 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2024-11-24 00:04:54,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:04:54,392 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-24 00:04:54,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:54,392 INFO L225 Difference]: With dead ends: 37 [2024-11-24 00:04:54,392 INFO L226 Difference]: Without dead ends: 24 [2024-11-24 00:04:54,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:04:54,394 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 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 [2024-11-24 00:04:54,394 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:04:54,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-24 00:04:54,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-11-24 00:04:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2024-11-24 00:04:54,399 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2024-11-24 00:04:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:54,399 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2024-11-24 00:04:54,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2024-11-24 00:04:54,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-24 00:04:54,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:54,400 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:54,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:04:54,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:54,601 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:54,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:54,602 INFO L85 PathProgramCache]: Analyzing trace with hash 446634676, now seen corresponding path program 2 times [2024-11-24 00:04:54,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:54,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245621565] [2024-11-24 00:04:54,602 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:04:54,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:54,664 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:04:54,664 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:04:54,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:54,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245621565] [2024-11-24 00:04:54,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245621565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:04:54,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427348986] [2024-11-24 00:04:54,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:04:54,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:54,806 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:04:54,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:04:54,914 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:04:54,914 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:54,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:04:54,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:04:55,032 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:55,032 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:04:55,190 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:04:55,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427348986] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:04:55,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:04:55,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-24 00:04:55,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680093006] [2024-11-24 00:04:55,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:04:55,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 00:04:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:55,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 00:04:55,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:04:55,193 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:55,316 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2024-11-24 00:04:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 00:04:55,317 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-24 00:04:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:55,318 INFO L225 Difference]: With dead ends: 56 [2024-11-24 00:04:55,318 INFO L226 Difference]: Without dead ends: 43 [2024-11-24 00:04:55,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-24 00:04:55,321 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:55,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 44 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:04:55,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-24 00:04:55,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2024-11-24 00:04:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2024-11-24 00:04:55,337 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 22 [2024-11-24 00:04:55,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:55,337 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2024-11-24 00:04:55,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.0) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2024-11-24 00:04:55,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-24 00:04:55,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:55,338 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:55,350 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:04:55,539 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:55,540 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:55,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:55,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1095664588, now seen corresponding path program 3 times [2024-11-24 00:04:55,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:55,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72183976] [2024-11-24 00:04:55,540 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:04:55,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:55,599 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 00:04:55,600 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:55,710 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:04:55,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72183976] [2024-11-24 00:04:55,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72183976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:04:55,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396780642] [2024-11-24 00:04:55,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:04:55,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:55,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:04:55,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:04:55,798 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-24 00:04:55,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:55,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 00:04:55,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:04:55,839 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:04:55,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:04:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:04:55,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396780642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:04:55,905 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:04:55,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 00:04:55,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152380343] [2024-11-24 00:04:55,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:04:55,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:04:55,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:04:55,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:04:55,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:04:55,908 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:04:55,974 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2024-11-24 00:04:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:04:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-24 00:04:55,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:04:55,977 INFO L225 Difference]: With dead ends: 63 [2024-11-24 00:04:55,977 INFO L226 Difference]: Without dead ends: 56 [2024-11-24 00:04:55,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:04:55,979 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:04:55,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 53 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:04:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-24 00:04:55,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-11-24 00:04:55,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.1636363636363636) internal successors, (64), 55 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2024-11-24 00:04:55,994 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 38 [2024-11-24 00:04:55,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:04:55,995 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2024-11-24 00:04:55,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:04:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2024-11-24 00:04:55,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:04:55,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:04:55,996 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:04:56,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:04:56,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:56,197 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:04:56,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:04:56,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1476952020, now seen corresponding path program 4 times [2024-11-24 00:04:56,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:04:56,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958074016] [2024-11-24 00:04:56,198 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:04:56,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:04:56,236 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:04:56,236 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:57,173 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 45 proven. 21 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:04:57,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:04:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958074016] [2024-11-24 00:04:57,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958074016] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:04:57,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599457849] [2024-11-24 00:04:57,174 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:04:57,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:04:57,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:04:57,179 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:04:57,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:04:57,279 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:04:57,279 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:04:57,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:04:57,286 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:04:59,718 INFO L349 Elim1Store]: treesize reduction 60, result has 50.4 percent of original size [2024-11-24 00:04:59,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 92 [2024-11-24 00:04:59,801 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:04:59,801 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:05:01,354 INFO L349 Elim1Store]: treesize reduction 75, result has 38.0 percent of original size [2024-11-24 00:05:01,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 102 treesize of output 71 [2024-11-24 00:05:01,373 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 50 proven. 16 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:05:01,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599457849] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:05:01,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:05:01,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 16] total 40 [2024-11-24 00:05:01,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310564150] [2024-11-24 00:05:01,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:05:01,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-24 00:05:01,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:01,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-24 00:05:01,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=375, Invalid=1185, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 00:05:01,377 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:03,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:03,785 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2024-11-24 00:05:03,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 00:05:03,786 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:05:03,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:03,788 INFO L225 Difference]: With dead ends: 176 [2024-11-24 00:05:03,788 INFO L226 Difference]: Without dead ends: 174 [2024-11-24 00:05:03,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=806, Invalid=2616, Unknown=0, NotChecked=0, Total=3422 [2024-11-24 00:05:03,791 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 198 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:03,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 164 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-24 00:05:03,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-24 00:05:03,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 78. [2024-11-24 00:05:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:03,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2024-11-24 00:05:03,808 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 54 [2024-11-24 00:05:03,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:03,809 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2024-11-24 00:05:03,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 2.15) internal successors, (86), 40 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2024-11-24 00:05:03,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-24 00:05:03,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:03,810 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:03,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 00:05:04,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:05:04,015 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:04,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:04,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1046959478, now seen corresponding path program 1 times [2024-11-24 00:05:04,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:04,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034206362] [2024-11-24 00:05:04,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:05:04,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:05:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:04,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034206362] [2024-11-24 00:05:04,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034206362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:05:04,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21846917] [2024-11-24 00:05:04,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:05:04,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:04,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:05:04,405 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:05:04,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:05:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:05:04,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:05:04,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:05:04,575 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:04,578 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:05:04,897 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21846917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:05:04,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:05:04,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-24 00:05:04,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597152433] [2024-11-24 00:05:04,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:05:04,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:05:04,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:04,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:05:04,901 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:05:04,902 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:05,009 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2024-11-24 00:05:05,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:05:05,012 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-24 00:05:05,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:05,012 INFO L225 Difference]: With dead ends: 157 [2024-11-24 00:05:05,013 INFO L226 Difference]: Without dead ends: 102 [2024-11-24 00:05:05,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:05:05,014 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:05,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 45 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:05:05,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-24 00:05:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-24 00:05:05,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:05,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2024-11-24 00:05:05,048 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 54 [2024-11-24 00:05:05,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:05,050 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2024-11-24 00:05:05,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2024-11-24 00:05:05,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-24 00:05:05,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:05,052 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:05,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:05:05,253 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:05,253 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:05,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1798800314, now seen corresponding path program 2 times [2024-11-24 00:05:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478533296] [2024-11-24 00:05:05,254 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:05:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:05,295 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:05:05,295 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478533296] [2024-11-24 00:05:06,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478533296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:05:06,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745519756] [2024-11-24 00:05:06,151 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:05:06,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:06,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:05:06,153 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:05:06,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:05:06,285 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:05:06,285 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:06,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:05:06,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:05:06,400 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:06,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:05:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:05:07,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745519756] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:05:07,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:05:07,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-24 00:05:07,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108636823] [2024-11-24 00:05:07,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:05:07,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-24 00:05:07,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:07,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-24 00:05:07,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 00:05:07,498 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:07,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:07,723 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2024-11-24 00:05:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-24 00:05:07,724 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2024-11-24 00:05:07,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:07,725 INFO L225 Difference]: With dead ends: 205 [2024-11-24 00:05:07,725 INFO L226 Difference]: Without dead ends: 150 [2024-11-24 00:05:07,726 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 00:05:07,727 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:07,727 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 73 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:05:07,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-24 00:05:07,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150. [2024-11-24 00:05:07,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0939597315436242) internal successors, (163), 149 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:07,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 163 transitions. [2024-11-24 00:05:07,745 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 163 transitions. Word has length 78 [2024-11-24 00:05:07,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:07,745 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 163 transitions. [2024-11-24 00:05:07,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.204081632653061) internal successors, (108), 49 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:07,746 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 163 transitions. [2024-11-24 00:05:07,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 00:05:07,747 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:07,747 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:07,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:05:07,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:07,948 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:07,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:07,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1742764518, now seen corresponding path program 3 times [2024-11-24 00:05:07,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:07,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008964704] [2024-11-24 00:05:07,949 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:05:07,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:08,028 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-24 00:05:08,028 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:08,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008964704] [2024-11-24 00:05:08,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008964704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:05:08,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142989728] [2024-11-24 00:05:08,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:05:08,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:08,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:05:08,195 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:05:08,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:05:08,368 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-24 00:05:08,368 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:08,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 00:05:08,377 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:05:08,454 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:08,454 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:05:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2182 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:08,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142989728] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:05:08,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:05:08,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-24 00:05:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417608572] [2024-11-24 00:05:08,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:05:08,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 00:05:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:08,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 00:05:08,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:05:08,594 INFO L87 Difference]: Start difference. First operand 150 states and 163 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:08,732 INFO L93 Difference]: Finished difference Result 225 states and 270 transitions. [2024-11-24 00:05:08,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 00:05:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2024-11-24 00:05:08,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:08,735 INFO L225 Difference]: With dead ends: 225 [2024-11-24 00:05:08,735 INFO L226 Difference]: Without dead ends: 214 [2024-11-24 00:05:08,736 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:05:08,737 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:08,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 50 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:05:08,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-24 00:05:08,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2024-11-24 00:05:08,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 1.1408450704225352) internal successors, (243), 213 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:08,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 243 transitions. [2024-11-24 00:05:08,768 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 243 transitions. Word has length 126 [2024-11-24 00:05:08,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:08,770 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 243 transitions. [2024-11-24 00:05:08,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:08,770 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 243 transitions. [2024-11-24 00:05:08,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:05:08,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:08,776 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:08,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-24 00:05:08,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:08,977 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:08,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1444044618, now seen corresponding path program 4 times [2024-11-24 00:05:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297499919] [2024-11-24 00:05:08,977 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:05:08,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:09,061 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:05:09,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:10,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297499919] [2024-11-24 00:05:10,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297499919] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:05:10,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878295952] [2024-11-24 00:05:10,078 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:05:10,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:10,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:05:10,081 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:05:10,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:05:10,309 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:05:10,309 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:10,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 00:05:10,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:05:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:10,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:05:10,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2494 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2024-11-24 00:05:10,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878295952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:05:10,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:05:10,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 34 [2024-11-24 00:05:10,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588801221] [2024-11-24 00:05:10,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:05:10,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-24 00:05:10,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:05:10,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-24 00:05:10,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:05:10,957 INFO L87 Difference]: Start difference. First operand 214 states and 243 transitions. Second operand has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:05:11,256 INFO L93 Difference]: Finished difference Result 353 states and 446 transitions. [2024-11-24 00:05:11,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 00:05:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2024-11-24 00:05:11,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:05:11,260 INFO L225 Difference]: With dead ends: 353 [2024-11-24 00:05:11,260 INFO L226 Difference]: Without dead ends: 342 [2024-11-24 00:05:11,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2024-11-24 00:05:11,263 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 75 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:05:11,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 99 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:05:11,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-24 00:05:11,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-24 00:05:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 1.1818181818181819) internal successors, (403), 341 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:11,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 403 transitions. [2024-11-24 00:05:11,315 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 403 transitions. Word has length 158 [2024-11-24 00:05:11,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:05:11,316 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 403 transitions. [2024-11-24 00:05:11,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.911764705882353) internal successors, (133), 34 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:05:11,317 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 403 transitions. [2024-11-24 00:05:11,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 00:05:11,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:05:11,320 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:05:11,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 00:05:11,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:05:11,521 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:05:11,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:05:11,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1365627306, now seen corresponding path program 5 times [2024-11-24 00:05:11,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:05:11,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192005670] [2024-11-24 00:05:11,522 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:05:11,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:05:12,170 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-24 00:05:12,170 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:05:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3886 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-24 00:05:15,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:05:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192005670] [2024-11-24 00:05:15,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192005670] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:05:15,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118444084] [2024-11-24 00:05:15,265 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:05:15,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:05:15,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:05:15,267 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:05:15,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:06:49,559 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-24 00:06:49,559 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:06:49,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:06:49,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:06:49,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3886 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-24 00:06:49,826 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:06:53,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3886 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2024-11-24 00:06:53,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118444084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:06:53,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:06:53,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-24 00:06:53,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647827048] [2024-11-24 00:06:53,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:06:53,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-24 00:06:53,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:06:53,326 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-24 00:06:53,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:06:53,331 INFO L87 Difference]: Start difference. First operand 342 states and 403 transitions. Second operand has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:06:53,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:06:53,826 INFO L93 Difference]: Finished difference Result 685 states and 854 transitions. [2024-11-24 00:06:53,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-24 00:06:53,827 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 222 [2024-11-24 00:06:53,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:06:53,830 INFO L225 Difference]: With dead ends: 685 [2024-11-24 00:06:53,830 INFO L226 Difference]: Without dead ends: 438 [2024-11-24 00:06:53,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 491 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-24 00:06:53,837 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:06:53,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:06:53,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-24 00:06:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2024-11-24 00:06:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 437 states have (on average 1.1418764302059496) internal successors, (499), 437 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:06:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 499 transitions. [2024-11-24 00:06:53,899 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 499 transitions. Word has length 222 [2024-11-24 00:06:53,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:06:53,902 INFO L471 AbstractCegarLoop]: Abstraction has 438 states and 499 transitions. [2024-11-24 00:06:53,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 2.09375) internal successors, (201), 96 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:06:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 499 transitions. [2024-11-24 00:06:53,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2024-11-24 00:06:53,908 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:06:53,908 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:06:53,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 00:06:54,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-24 00:06:54,109 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:06:54,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:06:54,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1672079766, now seen corresponding path program 6 times [2024-11-24 00:06:54,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:06:54,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425336225] [2024-11-24 00:06:54,110 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:06:54,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:06:55,154 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2024-11-24 00:06:55,154 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:06:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10606 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-24 00:06:56,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:06:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425336225] [2024-11-24 00:06:56,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425336225] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:06:56,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1987541958] [2024-11-24 00:06:56,820 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-24 00:06:56,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:06:56,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:06:56,825 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:06:56,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 00:10:22,137 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2024-11-24 00:10:22,137 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:10:22,159 INFO L256 TraceCheckSpWp]: Trace formula consists of 771 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:10:22,164 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:10:22,340 INFO L134 CoverageAnalysis]: Checked inductivity of 10606 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-24 00:10:22,340 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:10:23,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10606 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 8836 trivial. 0 not checked. [2024-11-24 00:10:23,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1987541958] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:10:23,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:10:23,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2024-11-24 00:10:23,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670101265] [2024-11-24 00:10:23,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:10:23,973 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2024-11-24 00:10:23,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:10:23,974 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2024-11-24 00:10:23,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-24 00:10:23,975 INFO L87 Difference]: Start difference. First operand 438 states and 499 transitions. Second operand has 65 states, 65 states have (on average 3.9846153846153847) internal successors, (259), 65 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:24,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:10:24,600 INFO L93 Difference]: Finished difference Result 705 states and 894 transitions. [2024-11-24 00:10:24,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-24 00:10:24,601 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.9846153846153847) internal successors, (259), 65 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2024-11-24 00:10:24,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:10:24,604 INFO L225 Difference]: With dead ends: 705 [2024-11-24 00:10:24,604 INFO L226 Difference]: Without dead ends: 694 [2024-11-24 00:10:24,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 667 GetRequests, 604 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2024-11-24 00:10:24,606 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 168 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:10:24,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 164 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 00:10:24,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2024-11-24 00:10:24,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2024-11-24 00:10:24,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 1.1818181818181819) internal successors, (819), 693 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 819 transitions. [2024-11-24 00:10:24,681 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 819 transitions. Word has length 318 [2024-11-24 00:10:24,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:10:24,682 INFO L471 AbstractCegarLoop]: Abstraction has 694 states and 819 transitions. [2024-11-24 00:10:24,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.9846153846153847) internal successors, (259), 65 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:24,682 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 819 transitions. [2024-11-24 00:10:24,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-24 00:10:24,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:10:24,690 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:10:24,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-24 00:10:24,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-24 00:10:24,891 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:10:24,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:10:24,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1415054550, now seen corresponding path program 7 times [2024-11-24 00:10:24,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:10:24,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881171363] [2024-11-24 00:10:24,892 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:10:24,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:10:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:10:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16462 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:10:33,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:10:33,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881171363] [2024-11-24 00:10:33,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881171363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:10:33,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559603944] [2024-11-24 00:10:33,422 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-24 00:10:33,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:10:33,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:10:33,427 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:10:33,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 00:10:33,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:10:33,823 INFO L256 TraceCheckSpWp]: Trace formula consists of 1269 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-24 00:10:33,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:10:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 16462 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:10:34,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:10:45,246 INFO L134 CoverageAnalysis]: Checked inductivity of 16462 backedges. 0 proven. 8836 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:10:45,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559603944] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:10:45,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:10:45,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-24 00:10:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946941659] [2024-11-24 00:10:45,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:10:45,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-24 00:10:45,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:10:45,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-24 00:10:45,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-24 00:10:45,266 INFO L87 Difference]: Start difference. First operand 694 states and 819 transitions. Second operand has 193 states, 193 states have (on average 2.051813471502591) internal successors, (396), 193 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:46,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:10:46,389 INFO L93 Difference]: Finished difference Result 1389 states and 1734 transitions. [2024-11-24 00:10:46,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-24 00:10:46,390 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 2.051813471502591) internal successors, (396), 193 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2024-11-24 00:10:46,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:10:46,394 INFO L225 Difference]: With dead ends: 1389 [2024-11-24 00:10:46,394 INFO L226 Difference]: Without dead ends: 886 [2024-11-24 00:10:46,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 987 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-24 00:10:46,399 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:10:46,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 87 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 00:10:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 886 states. [2024-11-24 00:10:46,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 886 to 886. [2024-11-24 00:10:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 886 states, 885 states have (on average 1.1423728813559322) internal successors, (1011), 885 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:46,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1011 transitions. [2024-11-24 00:10:46,506 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1011 transitions. Word has length 446 [2024-11-24 00:10:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:10:46,508 INFO L471 AbstractCegarLoop]: Abstraction has 886 states and 1011 transitions. [2024-11-24 00:10:46,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 2.051813471502591) internal successors, (396), 193 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:10:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1011 transitions. [2024-11-24 00:10:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2024-11-24 00:10:46,527 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:10:46,527 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:10:46,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 00:10:46,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-24 00:10:46,732 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:10:46,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:10:46,734 INFO L85 PathProgramCache]: Analyzing trace with hash -988445526, now seen corresponding path program 8 times [2024-11-24 00:10:46,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:10:46,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50571983] [2024-11-24 00:10:46,734 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:10:46,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:10:47,043 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:10:47,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:11:13,588 INFO L134 CoverageAnalysis]: Checked inductivity of 43726 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:11:13,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:11:13,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50571983] [2024-11-24 00:11:13,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50571983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:11:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502427373] [2024-11-24 00:11:13,589 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:11:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:11:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:11:13,591 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:11:13,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 00:11:14,219 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:11:14,219 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:11:14,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 2133 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-24 00:11:14,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:11:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 43726 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:11:14,800 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:12:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 43726 backedges. 0 proven. 36100 refuted. 0 times theorem prover too weak. 7626 trivial. 0 not checked. [2024-11-24 00:12:01,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502427373] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:12:01,001 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:12:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-24 00:12:01,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445429396] [2024-11-24 00:12:01,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:12:01,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-24 00:12:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:12:01,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-24 00:12:01,038 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-24 00:12:01,039 INFO L87 Difference]: Start difference. First operand 886 states and 1011 transitions. Second operand has 385 states, 385 states have (on average 2.0259740259740258) internal successors, (780), 385 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:05,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:12:05,989 INFO L93 Difference]: Finished difference Result 1773 states and 2214 transitions. [2024-11-24 00:12:05,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-24 00:12:05,990 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 2.0259740259740258) internal successors, (780), 385 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2024-11-24 00:12:05,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:12:05,996 INFO L225 Difference]: With dead ends: 1773 [2024-11-24 00:12:05,996 INFO L226 Difference]: Without dead ends: 1270 [2024-11-24 00:12:06,006 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1467 GetRequests, 1084 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 60.2s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-24 00:12:06,007 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:12:06,007 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 101 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:12:06,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-11-24 00:12:06,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1270. [2024-11-24 00:12:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1270 states, 1269 states have (on average 1.099290780141844) internal successors, (1395), 1269 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:06,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1270 states to 1270 states and 1395 transitions. [2024-11-24 00:12:06,109 INFO L78 Accepts]: Start accepts. Automaton has 1270 states and 1395 transitions. Word has length 638 [2024-11-24 00:12:06,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:12:06,110 INFO L471 AbstractCegarLoop]: Abstraction has 1270 states and 1395 transitions. [2024-11-24 00:12:06,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 2.0259740259740258) internal successors, (780), 385 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:12:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1270 states and 1395 transitions. [2024-11-24 00:12:06,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2024-11-24 00:12:06,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:12:06,122 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 62, 62, 62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:12:06,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 00:12:06,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-24 00:12:06,324 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:12:06,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:12:06,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1635477590, now seen corresponding path program 9 times [2024-11-24 00:12:06,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:12:06,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391977717] [2024-11-24 00:12:06,325 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:12:06,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:12:07,794 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-24 00:12:07,795 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:12:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 153550 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:12:11,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:12:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391977717] [2024-11-24 00:12:11,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391977717] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:12:11,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397986045] [2024-11-24 00:12:11,328 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:12:11,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:12:11,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:12:11,333 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:12:11,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 00:17:43,516 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 63 check-sat command(s) [2024-11-24 00:17:43,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:17:43,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 00:17:43,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:17:43,899 INFO L134 CoverageAnalysis]: Checked inductivity of 153550 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:17:43,899 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:17:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 153550 backedges. 0 proven. 7626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:17:48,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397986045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:17:48,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:17:48,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2024-11-24 00:17:48,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881129393] [2024-11-24 00:17:48,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:17:48,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2024-11-24 00:17:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:17:48,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2024-11-24 00:17:48,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-24 00:17:48,981 INFO L87 Difference]: Start difference. First operand 1270 states and 1395 transitions. Second operand has 129 states, 129 states have (on average 3.992248062015504) internal successors, (515), 129 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:51,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:17:51,066 INFO L93 Difference]: Finished difference Result 1793 states and 2174 transitions. [2024-11-24 00:17:51,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-24 00:17:51,066 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 3.992248062015504) internal successors, (515), 129 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1022 [2024-11-24 00:17:51,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:17:51,074 INFO L225 Difference]: With dead ends: 1793 [2024-11-24 00:17:51,074 INFO L226 Difference]: Without dead ends: 1782 [2024-11-24 00:17:51,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2107 GetRequests, 1980 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2024-11-24 00:17:51,076 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 394 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:17:51,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 206 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:17:51,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1782 states. [2024-11-24 00:17:51,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1782 to 1782. [2024-11-24 00:17:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1781 states have (on average 1.1426165075800112) internal successors, (2035), 1781 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:51,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2035 transitions. [2024-11-24 00:17:51,207 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2035 transitions. Word has length 1022 [2024-11-24 00:17:51,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:17:51,208 INFO L471 AbstractCegarLoop]: Abstraction has 1782 states and 2035 transitions. [2024-11-24 00:17:51,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 3.992248062015504) internal successors, (515), 129 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:17:51,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2035 transitions. [2024-11-24 00:17:51,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1279 [2024-11-24 00:17:51,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:17:51,223 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 126, 126, 126, 125, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:17:51,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 00:17:51,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-24 00:17:51,424 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:17:51,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:17:51,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1467244842, now seen corresponding path program 10 times [2024-11-24 00:17:51,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:17:51,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892256580] [2024-11-24 00:17:51,425 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:17:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:17:53,128 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:17:53,128 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:18:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 177550 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:18:16,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:18:16,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892256580] [2024-11-24 00:18:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892256580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:18:16,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030970520] [2024-11-24 00:18:16,216 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:18:16,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:18:16,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:18:16,220 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:18:16,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 00:18:17,493 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:18:17,493 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:18:17,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 4245 conjuncts, 128 conjuncts are in the unsatisfiable core [2024-11-24 00:18:17,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:18:18,150 INFO L134 CoverageAnalysis]: Checked inductivity of 177550 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:18:18,150 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:18:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 177550 backedges. 0 proven. 31626 refuted. 0 times theorem prover too weak. 145924 trivial. 0 not checked. [2024-11-24 00:18:38,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030970520] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:18:38,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:18:38,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [130, 129, 129] total 258 [2024-11-24 00:18:38,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3900827] [2024-11-24 00:18:38,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:18:38,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 258 states [2024-11-24 00:18:38,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:18:38,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 258 interpolants. [2024-11-24 00:18:38,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32898, Invalid=33408, Unknown=0, NotChecked=0, Total=66306 [2024-11-24 00:18:38,814 INFO L87 Difference]: Start difference. First operand 1782 states and 2035 transitions. Second operand has 258 states, 258 states have (on average 3.988372093023256) internal successors, (1029), 258 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:19:08,124 INFO L93 Difference]: Finished difference Result 2817 states and 3582 transitions. [2024-11-24 00:19:08,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2024-11-24 00:19:08,125 INFO L78 Accepts]: Start accepts. Automaton has has 258 states, 258 states have (on average 3.988372093023256) internal successors, (1029), 258 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1278 [2024-11-24 00:19:08,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:19:08,137 INFO L225 Difference]: With dead ends: 2817 [2024-11-24 00:19:08,137 INFO L226 Difference]: Without dead ends: 2806 [2024-11-24 00:19:08,143 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2685 GetRequests, 2429 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 630 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=32898, Invalid=33408, Unknown=0, NotChecked=0, Total=66306 [2024-11-24 00:19:08,144 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 998 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:19:08,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 367 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-24 00:19:08,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2024-11-24 00:19:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2806. [2024-11-24 00:19:08,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2806 states, 2805 states have (on average 1.1818181818181819) internal successors, (3315), 2805 states have internal predecessors, (3315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2806 states to 2806 states and 3315 transitions. [2024-11-24 00:19:08,507 INFO L78 Accepts]: Start accepts. Automaton has 2806 states and 3315 transitions. Word has length 1278 [2024-11-24 00:19:08,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:19:08,509 INFO L471 AbstractCegarLoop]: Abstraction has 2806 states and 3315 transitions. [2024-11-24 00:19:08,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 258 states, 258 states have (on average 3.988372093023256) internal successors, (1029), 258 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:19:08,510 INFO L276 IsEmpty]: Start isEmpty. Operand 2806 states and 3315 transitions. [2024-11-24 00:19:08,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1791 [2024-11-24 00:19:08,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:19:08,535 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 254, 254, 254, 253, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:19:08,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 00:19:08,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_de65fe69-3d1f-40ab-b76c-a30febf2de55/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:19:08,736 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:19:08,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:19:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1690563626, now seen corresponding path program 11 times [2024-11-24 00:19:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:19:08,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291749970] [2024-11-24 00:19:08,737 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:19:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms