./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:12:21,128 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:12:21,232 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 16:12:21,239 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:12:21,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:12:21,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:12:21,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:12:21,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:12:21,267 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:12:21,267 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:12:21,267 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:12:21,267 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:12:21,268 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:12:21,268 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:12:21,268 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:12:21,269 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:12:21,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:12:21,269 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:12:21,270 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:12:21,270 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_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 385b06dfd41f8b2cf291934cb4635d07bfe2a63001fa162165126d7b890c1d72 [2024-11-13 16:12:21,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:12:21,582 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:12:21,584 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:12:21,586 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:12:21,586 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:12:21,587 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-multidimensional/init-3-u.c Unable to find full path for "g++" [2024-11-13 16:12:23,486 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:12:23,827 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:12:23,827 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/sv-benchmarks/c/array-multidimensional/init-3-u.c [2024-11-13 16:12:23,835 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/data/3b90becfb/454c551a1fa449aab524fa46c2f720d8/FLAGb9c16142d [2024-11-13 16:12:23,851 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/data/3b90becfb/454c551a1fa449aab524fa46c2f720d8 [2024-11-13 16:12:23,853 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:12:23,855 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:12:23,857 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:12:23,857 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:12:23,862 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:12:23,862 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:12:23" (1/1) ... [2024-11-13 16:12:23,863 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b2915c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:23, skipping insertion in model container [2024-11-13 16:12:23,864 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:12:23" (1/1) ... [2024-11-13 16:12:23,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:12:24,062 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_2de39480-8be3-401e-b018-3ec680269445/sv-benchmarks/c/array-multidimensional/init-3-u.c[320,333] [2024-11-13 16:12:24,089 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:12:24,101 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:12:24,112 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_2de39480-8be3-401e-b018-3ec680269445/sv-benchmarks/c/array-multidimensional/init-3-u.c[320,333] [2024-11-13 16:12:24,126 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:12:24,141 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:12:24,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24 WrapperNode [2024-11-13 16:12:24,143 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:12:24,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:12:24,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:12:24,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:12:24,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,157 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,177 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-11-13 16:12:24,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:12:24,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:12:24,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:12:24,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:12:24,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,188 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,206 INFO L175 MemorySlicer]: Split 4 memory accesses to 2 slices as follows [2, 2]. 50 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]. [2024-11-13 16:12:24,206 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,207 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,214 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,220 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:12:24,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:12:24,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:12:24,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:12:24,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (1/1) ... [2024-11-13 16:12:24,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:12:24,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:24,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:12:24,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 16:12:24,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:12:24,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:12:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 16:12:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 16:12:24,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:12:24,404 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:12:24,407 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:12:24,617 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-13 16:12:24,617 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:12:24,626 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:12:24,626 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-13 16:12:24,626 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:12:24 BoogieIcfgContainer [2024-11-13 16:12:24,626 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:12:24,629 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:12:24,629 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:12:24,635 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:12:24,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:12:23" (1/3) ... [2024-11-13 16:12:24,636 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576a5f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:12:24, skipping insertion in model container [2024-11-13 16:12:24,636 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:12:24" (2/3) ... [2024-11-13 16:12:24,637 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@576a5f02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:12:24, skipping insertion in model container [2024-11-13 16:12:24,637 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:12:24" (3/3) ... [2024-11-13 16:12:24,639 INFO L112 eAbstractionObserver]: Analyzing ICFG init-3-u.c [2024-11-13 16:12:24,656 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:12:24,659 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG init-3-u.c that has 1 procedures, 21 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-13 16:12:24,714 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:12:24,727 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;@5d9f51e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:12:24,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 16:12:24,731 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:24,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:12:24,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:24,737 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:24,738 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:24,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:24,743 INFO L85 PathProgramCache]: Analyzing trace with hash 2011561395, now seen corresponding path program 1 times [2024-11-13 16:12:24,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:24,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723913745] [2024-11-13 16:12:24,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:24,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:24,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:24,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723913745] [2024-11-13 16:12:24,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723913745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:24,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:24,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:12:24,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649051573] [2024-11-13 16:12:24,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:24,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 16:12:24,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 16:12:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:12:24,938 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:24,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:24,955 INFO L93 Difference]: Finished difference Result 40 states and 64 transitions. [2024-11-13 16:12:24,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 16:12:24,957 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-11-13 16:12:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:24,966 INFO L225 Difference]: With dead ends: 40 [2024-11-13 16:12:24,966 INFO L226 Difference]: Without dead ends: 17 [2024-11-13 16:12:24,969 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 16:12:24,974 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:24,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:12:24,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-11-13 16:12:25,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2024-11-13 16:12:25,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2024-11-13 16:12:25,012 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2024-11-13 16:12:25,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:25,012 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2024-11-13 16:12:25,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,013 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2024-11-13 16:12:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:12:25,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:25,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:25,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 16:12:25,016 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:25,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:25,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1363705193, now seen corresponding path program 1 times [2024-11-13 16:12:25,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:25,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836240362] [2024-11-13 16:12:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:25,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:25,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:25,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:25,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836240362] [2024-11-13 16:12:25,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836240362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:25,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:25,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:12:25,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877261304] [2024-11-13 16:12:25,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:25,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:12:25,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:25,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:12:25,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:12:25,224 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:25,282 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-11-13 16:12:25,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:12:25,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-13 16:12:25,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:25,284 INFO L225 Difference]: With dead ends: 32 [2024-11-13 16:12:25,284 INFO L226 Difference]: Without dead ends: 22 [2024-11-13 16:12:25,284 INFO L431 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 [2024-11-13 16:12:25,285 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:25,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:12:25,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-13 16:12:25,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2024-11-13 16:12:25,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2024-11-13 16:12:25,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2024-11-13 16:12:25,291 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2024-11-13 16:12:25,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:25,291 INFO L471 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2024-11-13 16:12:25,292 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,292 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2024-11-13 16:12:25,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 16:12:25,292 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:25,292 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:25,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 16:12:25,293 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:25,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:25,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1643809631, now seen corresponding path program 1 times [2024-11-13 16:12:25,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:25,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026722195] [2024-11-13 16:12:25,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:25,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:25,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:25,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:25,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026722195] [2024-11-13 16:12:25,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026722195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:25,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:25,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:12:25,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251069224] [2024-11-13 16:12:25,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:25,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:12:25,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:25,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:12:25,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:25,434 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-13 16:12:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:25,506 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2024-11-13 16:12:25,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:12:25,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2024-11-13 16:12:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:25,507 INFO L225 Difference]: With dead ends: 43 [2024-11-13 16:12:25,507 INFO L226 Difference]: Without dead ends: 28 [2024-11-13 16:12:25,507 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:25,508 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 41 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:25,508 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 17 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:12:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-13 16:12:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2024-11-13 16:12:25,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2024-11-13 16:12:25,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2024-11-13 16:12:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:25,514 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2024-11-13 16:12:25,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-11-13 16:12:25,514 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2024-11-13 16:12:25,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:12:25,515 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:25,515 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:25,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 16:12:25,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:25,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:25,516 INFO L85 PathProgramCache]: Analyzing trace with hash 298841079, now seen corresponding path program 1 times [2024-11-13 16:12:25,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:25,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381865322] [2024-11-13 16:12:25,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:25,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:25,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:25,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:25,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381865322] [2024-11-13 16:12:25,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381865322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:12:25,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:12:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:12:25,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029626135] [2024-11-13 16:12:25,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:12:25,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:12:25,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:25,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:12:25,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:25,623 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:25,672 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2024-11-13 16:12:25,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:12:25,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-13 16:12:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:25,674 INFO L225 Difference]: With dead ends: 43 [2024-11-13 16:12:25,674 INFO L226 Difference]: Without dead ends: 26 [2024-11-13 16:12:25,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:12:25,675 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:25,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 20 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:12:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-11-13 16:12:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2024-11-13 16:12:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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) [2024-11-13 16:12:25,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2024-11-13 16:12:25,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2024-11-13 16:12:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:25,681 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2024-11-13 16:12:25,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:25,681 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2024-11-13 16:12:25,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 16:12:25,681 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:25,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:25,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 16:12:25,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:25,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -181242733, now seen corresponding path program 1 times [2024-11-13 16:12:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319073984] [2024-11-13 16:12:25,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:25,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:25,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:25,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319073984] [2024-11-13 16:12:25,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319073984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:25,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358915165] [2024-11-13 16:12:25,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:25,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:25,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:25,837 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:25,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:12:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:25,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:12:25,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:26,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:26,027 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:26,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:26,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1358915165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:26,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:26,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-13 16:12:26,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050017604] [2024-11-13 16:12:26,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:26,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 16:12:26,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:26,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 16:12:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 16:12:26,091 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:26,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:26,224 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-13 16:12:26,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 16:12:26,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 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 [2024-11-13 16:12:26,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:26,226 INFO L225 Difference]: With dead ends: 59 [2024-11-13 16:12:26,227 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 16:12:26,228 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2024-11-13 16:12:26,228 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 73 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:26,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 30 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:12:26,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 16:12:26,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2024-11-13 16:12:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 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) [2024-11-13 16:12:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2024-11-13 16:12:26,245 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 16 [2024-11-13 16:12:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:26,245 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2024-11-13 16:12:26,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2024-11-13 16:12:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 16:12:26,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:26,247 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:26,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:26,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:26,451 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:26,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash 381238007, now seen corresponding path program 2 times [2024-11-13 16:12:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:26,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088508149] [2024-11-13 16:12:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:26,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:26,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:26,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:26,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088508149] [2024-11-13 16:12:26,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088508149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:26,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456754869] [2024-11-13 16:12:26,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:12:26,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:26,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:26,758 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:26,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:12:26,852 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:26,852 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:26,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:12:26,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:26,989 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:26,990 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:27,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:27,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456754869] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:27,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:27,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-13 16:12:27,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091306264] [2024-11-13 16:12:27,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:27,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 16:12:27,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:27,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 16:12:27,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=195, Unknown=0, NotChecked=0, Total=342 [2024-11-13 16:12:27,115 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:27,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:27,397 INFO L93 Difference]: Finished difference Result 107 states and 132 transitions. [2024-11-13 16:12:27,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:12:27,397 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 19 [2024-11-13 16:12:27,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:27,398 INFO L225 Difference]: With dead ends: 107 [2024-11-13 16:12:27,398 INFO L226 Difference]: Without dead ends: 76 [2024-11-13 16:12:27,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=222, Invalid=330, Unknown=0, NotChecked=0, Total=552 [2024-11-13 16:12:27,400 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 158 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:27,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 60 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:12:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-13 16:12:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 58. [2024-11-13 16:12:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:27,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2024-11-13 16:12:27,416 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 19 [2024-11-13 16:12:27,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:27,416 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2024-11-13 16:12:27,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:27,417 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2024-11-13 16:12:27,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 16:12:27,417 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:27,417 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:27,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:12:27,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-13 16:12:27,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:27,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:27,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1167354505, now seen corresponding path program 3 times [2024-11-13 16:12:27,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:27,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236848149] [2024-11-13 16:12:27,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:27,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:27,999 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:27,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:27,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236848149] [2024-11-13 16:12:27,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236848149] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:28,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087219344] [2024-11-13 16:12:28,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 16:12:28,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:28,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:28,002 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:28,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:12:28,075 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 16:12:28,075 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:28,076 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:12:28,078 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:28,197 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 16:12:28,198 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:28,271 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-13 16:12:28,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087219344] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:28,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:28,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 4, 4] total 18 [2024-11-13 16:12:28,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779882651] [2024-11-13 16:12:28,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:28,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 16:12:28,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:28,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 16:12:28,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2024-11-13 16:12:28,273 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:29,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:29,874 INFO L93 Difference]: Finished difference Result 388 states and 430 transitions. [2024-11-13 16:12:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-13 16:12:29,875 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 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 25 [2024-11-13 16:12:29,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:29,877 INFO L225 Difference]: With dead ends: 388 [2024-11-13 16:12:29,879 INFO L226 Difference]: Without dead ends: 333 [2024-11-13 16:12:29,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1310, Invalid=2722, Unknown=0, NotChecked=0, Total=4032 [2024-11-13 16:12:29,884 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 1039 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:29,884 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 78 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 16:12:29,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2024-11-13 16:12:29,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 113. [2024-11-13 16:12:29,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.1964285714285714) internal successors, (134), 112 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:29,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 134 transitions. [2024-11-13 16:12:29,933 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 134 transitions. Word has length 25 [2024-11-13 16:12:29,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:29,935 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 134 transitions. [2024-11-13 16:12:29,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:29,936 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 134 transitions. [2024-11-13 16:12:29,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 16:12:29,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:29,937 INFO L215 NwaCegarLoop]: trace histogram [44, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:29,958 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 16:12:30,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-13 16:12:30,139 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:30,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:30,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1378398615, now seen corresponding path program 4 times [2024-11-13 16:12:30,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:30,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189331231] [2024-11-13 16:12:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:30,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:30,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 443 proven. 66 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2024-11-13 16:12:30,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189331231] [2024-11-13 16:12:30,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189331231] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:30,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133310977] [2024-11-13 16:12:30,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 16:12:30,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:30,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:30,826 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:30,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:12:30,991 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 16:12:30,991 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:30,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 16:12:30,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:31,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 506 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-13 16:12:31,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1178 backedges. 506 proven. 12 refuted. 0 times theorem prover too weak. 660 trivial. 0 not checked. [2024-11-13 16:12:31,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133310977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:31,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:31,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 16] total 43 [2024-11-13 16:12:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384859612] [2024-11-13 16:12:31,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:31,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-11-13 16:12:31,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:12:31,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-11-13 16:12:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=1394, Unknown=0, NotChecked=0, Total=1806 [2024-11-13 16:12:31,766 INFO L87 Difference]: Start difference. First operand 113 states and 134 transitions. Second operand has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:34,668 INFO L93 Difference]: Finished difference Result 763 states and 860 transitions. [2024-11-13 16:12:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-13 16:12:34,669 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 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 77 [2024-11-13 16:12:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:34,672 INFO L225 Difference]: With dead ends: 763 [2024-11-13 16:12:34,672 INFO L226 Difference]: Without dead ends: 654 [2024-11-13 16:12:34,678 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3760 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2878, Invalid=9332, Unknown=0, NotChecked=0, Total=12210 [2024-11-13 16:12:34,679 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 1919 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1919 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:34,679 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1919 Valid, 341 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 16:12:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2024-11-13 16:12:34,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 516. [2024-11-13 16:12:34,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 515 states have (on average 1.1766990291262136) internal successors, (606), 515 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 606 transitions. [2024-11-13 16:12:34,794 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 606 transitions. Word has length 77 [2024-11-13 16:12:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:34,794 INFO L471 AbstractCegarLoop]: Abstraction has 516 states and 606 transitions. [2024-11-13 16:12:34,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.4651162790697674) internal successors, (63), 43 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:12:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 606 transitions. [2024-11-13 16:12:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2024-11-13 16:12:34,804 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:34,804 INFO L215 NwaCegarLoop]: trace histogram [240, 20, 20, 20, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:34,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 16:12:35,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 16:12:35,005 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:12:35,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:35,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1345593879, now seen corresponding path program 5 times [2024-11-13 16:12:35,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:12:35,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245395379] [2024-11-13 16:12:35,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:35,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:12:35,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 34152 backedges. 3238 proven. 78 refuted. 0 times theorem prover too weak. 30836 trivial. 0 not checked. [2024-11-13 16:12:37,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:12:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245395379] [2024-11-13 16:12:37,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245395379] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:37,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169979034] [2024-11-13 16:12:37,167 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 16:12:37,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:37,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:37,169 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:37,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:18:23,143 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2024-11-13 16:18:23,143 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:18:23,232 INFO L255 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 16:18:23,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:18:23,910 INFO L134 CoverageAnalysis]: Checked inductivity of 34152 backedges. 21505 proven. 1727 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2024-11-13 16:18:23,910 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:18:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 34152 backedges. 21505 proven. 1727 refuted. 0 times theorem prover too weak. 10920 trivial. 0 not checked. [2024-11-13 16:18:24,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169979034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:18:24,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:18:24,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21, 21] total 54 [2024-11-13 16:18:24,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525750805] [2024-11-13 16:18:24,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:18:24,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-13 16:18:24,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:18:24,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-13 16:18:24,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=543, Invalid=2319, Unknown=0, NotChecked=0, Total=2862 [2024-11-13 16:18:24,523 INFO L87 Difference]: Start difference. First operand 516 states and 606 transitions. Second operand has 54 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:18:34,504 INFO L93 Difference]: Finished difference Result 2286 states and 2551 transitions. [2024-11-13 16:18:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2024-11-13 16:18:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 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 321 [2024-11-13 16:18:34,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:18:34,516 INFO L225 Difference]: With dead ends: 2286 [2024-11-13 16:18:34,516 INFO L226 Difference]: Without dead ends: 1787 [2024-11-13 16:18:34,532 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 794 SyntacticMatches, 0 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22405 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=12948, Invalid=46344, Unknown=0, NotChecked=0, Total=59292 [2024-11-13 16:18:34,534 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 7907 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 1053 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7907 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1053 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:18:34,534 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7907 Valid, 521 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1053 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 16:18:34,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2024-11-13 16:18:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1399. [2024-11-13 16:18:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1399 states, 1398 states have (on average 1.1716738197424892) internal successors, (1638), 1398 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:34,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1399 states to 1399 states and 1638 transitions. [2024-11-13 16:18:34,741 INFO L78 Accepts]: Start accepts. Automaton has 1399 states and 1638 transitions. Word has length 321 [2024-11-13 16:18:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:18:34,742 INFO L471 AbstractCegarLoop]: Abstraction has 1399 states and 1638 transitions. [2024-11-13 16:18:34,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.9444444444444444) internal successors, (105), 54 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:18:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1399 states and 1638 transitions. [2024-11-13 16:18:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2024-11-13 16:18:34,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:18:34,775 INFO L215 NwaCegarLoop]: trace histogram [676, 52, 52, 52, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:18:34,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:18:34,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 16:18:34,976 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:18:34,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:18:34,976 INFO L85 PathProgramCache]: Analyzing trace with hash 637030807, now seen corresponding path program 6 times [2024-11-13 16:18:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:18:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85988868] [2024-11-13 16:18:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:18:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:18:35,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:18:39,770 INFO L134 CoverageAnalysis]: Checked inductivity of 267510 backedges. 10055 proven. 91 refuted. 0 times theorem prover too weak. 257364 trivial. 0 not checked. [2024-11-13 16:18:39,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:18:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85988868] [2024-11-13 16:18:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85988868] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:18:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1854317403] [2024-11-13 16:18:39,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 16:18:39,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:18:39,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:18:39,774 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:18:39,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:19:07,436 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2024-11-13 16:19:07,437 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:19:07,457 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 16:19:07,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 267510 backedges. 124591 proven. 91 refuted. 0 times theorem prover too weak. 142828 trivial. 0 not checked. [2024-11-13 16:19:08,130 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 267510 backedges. 121259 proven. 3423 refuted. 0 times theorem prover too weak. 142828 trivial. 0 not checked. [2024-11-13 16:19:09,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1854317403] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:09,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:09,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2024-11-13 16:19:09,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523865129] [2024-11-13 16:19:09,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:09,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-13 16:19:09,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:09,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-13 16:19:09,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=1167, Unknown=0, NotChecked=0, Total=2070 [2024-11-13 16:19:09,020 INFO L87 Difference]: Start difference. First operand 1399 states and 1638 transitions. Second operand has 46 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:10,057 INFO L93 Difference]: Finished difference Result 4199 states and 5819 transitions. [2024-11-13 16:19:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-13 16:19:10,058 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 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 853 [2024-11-13 16:19:10,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:10,071 INFO L225 Difference]: With dead ends: 4199 [2024-11-13 16:19:10,071 INFO L226 Difference]: Without dead ends: 2818 [2024-11-13 16:19:10,074 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1735 GetRequests, 1677 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1365, Invalid=2175, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 16:19:10,077 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 487 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:10,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 126 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 16:19:10,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2818 states. [2024-11-13 16:19:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2818 to 2764. [2024-11-13 16:19:10,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2764 states, 2763 states have (on average 1.1574375678610207) internal successors, (3198), 2763 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 3198 transitions. [2024-11-13 16:19:10,442 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 3198 transitions. Word has length 853 [2024-11-13 16:19:10,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:10,442 INFO L471 AbstractCegarLoop]: Abstraction has 2764 states and 3198 transitions. [2024-11-13 16:19:10,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 1.6521739130434783) internal successors, (76), 46 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:10,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 3198 transitions. [2024-11-13 16:19:10,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1634 [2024-11-13 16:19:10,545 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:10,546 INFO L215 NwaCegarLoop]: trace histogram [1456, 52, 52, 52, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:10,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:19:10,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:10,746 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:10,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:10,747 INFO L85 PathProgramCache]: Analyzing trace with hash -823058921, now seen corresponding path program 7 times [2024-11-13 16:19:10,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:10,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10922209] [2024-11-13 16:19:10,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:10,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1139160 backedges. 42950 proven. 406 refuted. 0 times theorem prover too weak. 1095804 trivial. 0 not checked. [2024-11-13 16:19:23,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:19:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10922209] [2024-11-13 16:19:23,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10922209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:23,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228485607] [2024-11-13 16:19:23,709 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 16:19:23,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:23,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:23,711 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:23,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:19:26,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:26,529 INFO L255 TraceCheckSpWp]: Trace formula consists of 10604 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 16:19:26,562 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:27,375 INFO L134 CoverageAnalysis]: Checked inductivity of 1139160 backedges. 42950 proven. 406 refuted. 0 times theorem prover too weak. 1095804 trivial. 0 not checked. [2024-11-13 16:19:27,375 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:28,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1139160 backedges. 42950 proven. 406 refuted. 0 times theorem prover too weak. 1095804 trivial. 0 not checked. [2024-11-13 16:19:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228485607] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:19:28,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:19:28,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2024-11-13 16:19:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597267901] [2024-11-13 16:19:28,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:19:28,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2024-11-13 16:19:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:19:28,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2024-11-13 16:19:28,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=4587, Unknown=0, NotChecked=0, Total=8190 [2024-11-13 16:19:28,814 INFO L87 Difference]: Start difference. First operand 2764 states and 3198 transitions. Second operand has 91 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:31,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:31,543 INFO L93 Difference]: Finished difference Result 8339 states and 11489 transitions. [2024-11-13 16:19:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-11-13 16:19:31,544 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 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 1633 [2024-11-13 16:19:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:31,568 INFO L225 Difference]: With dead ends: 8339 [2024-11-13 16:19:31,568 INFO L226 Difference]: Without dead ends: 5608 [2024-11-13 16:19:31,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3325 GetRequests, 3207 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5101 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=5430, Invalid=8850, Unknown=0, NotChecked=0, Total=14280 [2024-11-13 16:19:31,574 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 1350 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:31,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 251 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 16:19:31,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5608 states. [2024-11-13 16:19:32,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5608 to 5494. [2024-11-13 16:19:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5493 states have (on average 1.1501911523757509) internal successors, (6318), 5493 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:32,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 6318 transitions. [2024-11-13 16:19:32,268 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 6318 transitions. Word has length 1633 [2024-11-13 16:19:32,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:32,269 INFO L471 AbstractCegarLoop]: Abstraction has 5494 states and 6318 transitions. [2024-11-13 16:19:32,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 91 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:19:32,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 6318 transitions. [2024-11-13 16:19:32,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3194 [2024-11-13 16:19:32,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:32,340 INFO L215 NwaCegarLoop]: trace histogram [3016, 52, 52, 52, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:32,381 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:19:32,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:32,541 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:19:32,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:32,541 INFO L85 PathProgramCache]: Analyzing trace with hash -994229225, now seen corresponding path program 8 times [2024-11-13 16:19:32,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:19:32,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009715767] [2024-11-13 16:19:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:32,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:19:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 4707660 backedges. 177590 proven. 1711 refuted. 0 times theorem prover too weak. 4528359 trivial. 0 not checked. [2024-11-13 16:20:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 16:20:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009715767] [2024-11-13 16:20:17,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009715767] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:17,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666725711] [2024-11-13 16:20:17,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:20:17,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:17,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:20:17,931 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:20:17,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:20:23,519 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:20:23,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:20:23,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 21524 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 16:20:23,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 4707660 backedges. 177590 proven. 1711 refuted. 0 times theorem prover too weak. 4528359 trivial. 0 not checked. [2024-11-13 16:20:26,045 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:31,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4707660 backedges. 177590 proven. 1711 refuted. 0 times theorem prover too weak. 4528359 trivial. 0 not checked. [2024-11-13 16:20:31,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666725711] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:20:31,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:20:31,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62, 62] total 181 [2024-11-13 16:20:31,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220442063] [2024-11-13 16:20:31,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:31,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 181 states [2024-11-13 16:20:31,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 16:20:31,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 181 interpolants. [2024-11-13 16:20:31,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14403, Invalid=18177, Unknown=0, NotChecked=0, Total=32580 [2024-11-13 16:20:31,259 INFO L87 Difference]: Start difference. First operand 5494 states and 6318 transitions. Second operand has 181 states, 181 states have (on average 1.0994475138121547) internal successors, (199), 181 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:45,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:20:45,219 INFO L93 Difference]: Finished difference Result 16619 states and 22829 transitions. [2024-11-13 16:20:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2024-11-13 16:20:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 181 states, 181 states have (on average 1.0994475138121547) internal successors, (199), 181 states have internal predecessors, (199), 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 3193 [2024-11-13 16:20:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:20:45,260 INFO L225 Difference]: With dead ends: 16619 [2024-11-13 16:20:45,260 INFO L226 Difference]: Without dead ends: 11188 [2024-11-13 16:20:45,273 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6505 GetRequests, 6267 SyntacticMatches, 0 SemanticMatches, 238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21001 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=21660, Invalid=35700, Unknown=0, NotChecked=0, Total=57360 [2024-11-13 16:20:45,274 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 2945 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 706 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2945 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 1203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:20:45,274 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2945 Valid, 483 Invalid, 1203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:20:45,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11188 states. [2024-11-13 16:20:46,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11188 to 10954. [2024-11-13 16:20:46,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10954 states, 10953 states have (on average 1.1465351958367571) internal successors, (12558), 10953 states have internal predecessors, (12558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:46,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10954 states to 10954 states and 12558 transitions. [2024-11-13 16:20:46,373 INFO L78 Accepts]: Start accepts. Automaton has 10954 states and 12558 transitions. Word has length 3193 [2024-11-13 16:20:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:20:46,374 INFO L471 AbstractCegarLoop]: Abstraction has 10954 states and 12558 transitions. [2024-11-13 16:20:46,374 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 181 states, 181 states have (on average 1.0994475138121547) internal successors, (199), 181 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:20:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 10954 states and 12558 transitions. [2024-11-13 16:20:46,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6314 [2024-11-13 16:20:46,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:20:46,582 INFO L215 NwaCegarLoop]: trace histogram [6136, 52, 52, 52, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:20:46,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 16:20:46,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2de39480-8be3-401e-b018-3ec680269445/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:20:46,782 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 16:20:46,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:20:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -729051113, now seen corresponding path program 9 times [2024-11-13 16:20:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 16:20:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755871056] [2024-11-13 16:20:46,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:20:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 16:21:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat