./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f3d7c99d022d8509e68f89579042bc1fecba07028d59ece346230f0791ea7f9 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:00:27,337 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:00:27,457 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:00:27,464 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:00:27,465 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:00:27,514 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:00:27,515 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:00:27,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:00:27,515 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:00:27,516 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:00:27,516 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:00:27,516 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:00:27,516 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:00:27,517 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:00:27,517 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:00:27,517 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:00:27,517 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:00:27,517 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:00:27,518 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:00:27,518 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:00:27,518 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:00:27,518 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:00:27,518 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:00:27,519 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:00:27,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:27,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:00:27,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:27,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:00:27,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:00:27,521 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:00:27,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:00:27,522 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:00:27,523 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_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f3d7c99d022d8509e68f89579042bc1fecba07028d59ece346230f0791ea7f9 [2024-11-27 20:00:27,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:00:27,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:00:27,960 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:00:27,961 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:00:27,962 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:00:27,965 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i [2024-11-27 20:00:31,581 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/data/8473571d6/49f0bfb6f27d411b83d19323c611559b/FLAGf0a0470fe [2024-11-27 20:00:32,159 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:00:32,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i [2024-11-27 20:00:32,191 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/data/8473571d6/49f0bfb6f27d411b83d19323c611559b/FLAGf0a0470fe [2024-11-27 20:00:32,221 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/data/8473571d6/49f0bfb6f27d411b83d19323c611559b [2024-11-27 20:00:32,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:00:32,227 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:00:32,229 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:00:32,230 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:00:32,237 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:00:32,238 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:00:32" (1/1) ... [2024-11-27 20:00:32,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f4df9af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:32, skipping insertion in model container [2024-11-27 20:00:32,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:00:32" (1/1) ... [2024-11-27 20:00:32,311 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:00:32,528 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_fb3528c8-e219-4468-ba38-528dcd625cb9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i[916,929] [2024-11-27 20:00:32,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:00:32,899 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:00:32,916 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_fb3528c8-e219-4468-ba38-528dcd625cb9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-43.i[916,929] [2024-11-27 20:00:33,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:00:33,129 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:00:33,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33 WrapperNode [2024-11-27 20:00:33,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:00:33,133 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:00:33,133 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:00:33,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:00:33,148 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,196 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,389 INFO L138 Inliner]: procedures = 26, calls = 87, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 788 [2024-11-27 20:00:33,390 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:00:33,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:00:33,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:00:33,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:00:33,403 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,404 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,424 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,542 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:00:33,542 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,542 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,597 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,620 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,638 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:00:33,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:00:33,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:00:33,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:00:33,660 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (1/1) ... [2024-11-27 20:00:33,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:00:33,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:33,702 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:00:33,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:00:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:00:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:00:33,743 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:00:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:00:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:00:33,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:00:33,970 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:00:33,975 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:00:36,391 INFO L? ?]: Removed 120 outVars from TransFormulas that were not future-live. [2024-11-27 20:00:36,391 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:00:36,425 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:00:36,429 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:00:36,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:00:36 BoogieIcfgContainer [2024-11-27 20:00:36,430 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:00:36,436 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:00:36,436 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:00:36,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:00:36,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:00:32" (1/3) ... [2024-11-27 20:00:36,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71a6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:00:36, skipping insertion in model container [2024-11-27 20:00:36,445 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:00:33" (2/3) ... [2024-11-27 20:00:36,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a71a6ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:00:36, skipping insertion in model container [2024-11-27 20:00:36,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:00:36" (3/3) ... [2024-11-27 20:00:36,449 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-43.i [2024-11-27 20:00:36,470 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:00:36,476 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-43.i that has 2 procedures, 324 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:00:36,593 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:00:36,613 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;@7c1e112, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:00:36,613 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:00:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 247 states have (on average 1.5587044534412955) internal successors, (385), 248 states have internal predecessors, (385), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-27 20:00:36,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-27 20:00:36,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:36,680 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:36,680 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:36,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:36,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1210915147, now seen corresponding path program 1 times [2024-11-27 20:00:36,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:36,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458931278] [2024-11-27 20:00:36,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 146 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2024-11-27 20:00:37,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:37,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458931278] [2024-11-27 20:00:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458931278] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:37,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037444702] [2024-11-27 20:00:37,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:37,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:37,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:37,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:37,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:00:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:38,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:00:38,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 10658 trivial. 0 not checked. [2024-11-27 20:00:38,754 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:00:38,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037444702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:38,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:00:38,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:00:38,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930186615] [2024-11-27 20:00:38,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:38,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:00:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:38,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:00:38,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:00:38,793 INFO L87 Difference]: Start difference. First operand has 324 states, 247 states have (on average 1.5587044534412955) internal successors, (385), 248 states have internal predecessors, (385), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) Second operand has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-27 20:00:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:38,902 INFO L93 Difference]: Finished difference Result 641 states and 1134 transitions. [2024-11-27 20:00:38,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:00:38,905 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) Word has length 501 [2024-11-27 20:00:38,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:38,922 INFO L225 Difference]: With dead ends: 641 [2024-11-27 20:00:38,925 INFO L226 Difference]: Without dead ends: 320 [2024-11-27 20:00:38,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:00:38,939 INFO L435 NwaCegarLoop]: 525 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, 525 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 [2024-11-27 20:00:38,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:00:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-27 20:00:39,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-11-27 20:00:39,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 244 states have (on average 1.5450819672131149) internal successors, (377), 244 states have internal predecessors, (377), 74 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2024-11-27 20:00:39,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 525 transitions. [2024-11-27 20:00:39,035 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 525 transitions. Word has length 501 [2024-11-27 20:00:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:39,036 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 525 transitions. [2024-11-27 20:00:39,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 68.0) internal successors, (136), 2 states have internal predecessors, (136), 2 states have call successors, (74), 2 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 2 states have call successors, (74) [2024-11-27 20:00:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 525 transitions. [2024-11-27 20:00:39,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-27 20:00:39,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:39,061 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:39,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:00:39,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:00:39,266 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:39,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:39,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1647987165, now seen corresponding path program 1 times [2024-11-27 20:00:39,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:39,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609841728] [2024-11-27 20:00:39,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:39,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:40,306 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:40,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609841728] [2024-11-27 20:00:40,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609841728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:40,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:40,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:00:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801243202] [2024-11-27 20:00:40,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:40,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:00:40,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:40,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:00:40,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:40,312 INFO L87 Difference]: Start difference. First operand 320 states and 525 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:40,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:40,650 INFO L93 Difference]: Finished difference Result 821 states and 1346 transitions. [2024-11-27 20:00:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:00:40,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 501 [2024-11-27 20:00:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:40,667 INFO L225 Difference]: With dead ends: 821 [2024-11-27 20:00:40,667 INFO L226 Difference]: Without dead ends: 504 [2024-11-27 20:00:40,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:40,672 INFO L435 NwaCegarLoop]: 537 mSDtfsCounter, 294 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:40,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 1039 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:00:40,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-27 20:00:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 501. [2024-11-27 20:00:40,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 416 states have (on average 1.5721153846153846) internal successors, (654), 417 states have internal predecessors, (654), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2024-11-27 20:00:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 818 transitions. [2024-11-27 20:00:40,779 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 818 transitions. Word has length 501 [2024-11-27 20:00:40,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:40,784 INFO L471 AbstractCegarLoop]: Abstraction has 501 states and 818 transitions. [2024-11-27 20:00:40,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 818 transitions. [2024-11-27 20:00:40,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-27 20:00:40,799 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:40,800 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:40,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:00:40,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:40,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:40,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1160337947, now seen corresponding path program 1 times [2024-11-27 20:00:40,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:40,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834670390] [2024-11-27 20:00:40,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:40,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:41,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:42,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834670390] [2024-11-27 20:00:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834670390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:42,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:00:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17385319] [2024-11-27 20:00:42,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:42,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:00:42,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:42,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:00:42,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:42,368 INFO L87 Difference]: Start difference. First operand 501 states and 818 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:42,617 INFO L93 Difference]: Finished difference Result 1378 states and 2249 transitions. [2024-11-27 20:00:42,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:00:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 501 [2024-11-27 20:00:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:42,632 INFO L225 Difference]: With dead ends: 1378 [2024-11-27 20:00:42,632 INFO L226 Difference]: Without dead ends: 880 [2024-11-27 20:00:42,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:42,638 INFO L435 NwaCegarLoop]: 681 mSDtfsCounter, 287 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1179 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:42,639 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1179 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:00:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2024-11-27 20:00:42,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 877. [2024-11-27 20:00:42,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 762 states have (on average 1.5879265091863517) internal successors, (1210), 765 states have internal predecessors, (1210), 110 states have call successors, (110), 4 states have call predecessors, (110), 4 states have return successors, (110), 107 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-27 20:00:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1430 transitions. [2024-11-27 20:00:42,753 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1430 transitions. Word has length 501 [2024-11-27 20:00:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:42,759 INFO L471 AbstractCegarLoop]: Abstraction has 877 states and 1430 transitions. [2024-11-27 20:00:42,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1430 transitions. [2024-11-27 20:00:42,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-27 20:00:42,779 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:42,780 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:42,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:00:42,780 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:42,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:42,782 INFO L85 PathProgramCache]: Analyzing trace with hash -206397789, now seen corresponding path program 1 times [2024-11-27 20:00:42,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:42,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610348564] [2024-11-27 20:00:42,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:42,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:43,426 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:43,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:43,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610348564] [2024-11-27 20:00:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610348564] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:43,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:43,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:00:43,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989160603] [2024-11-27 20:00:43,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:43,430 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:00:43,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:43,431 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:00:43,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:43,434 INFO L87 Difference]: Start difference. First operand 877 states and 1430 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:43,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:43,649 INFO L93 Difference]: Finished difference Result 1874 states and 3056 transitions. [2024-11-27 20:00:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:00:43,650 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 501 [2024-11-27 20:00:43,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:43,663 INFO L225 Difference]: With dead ends: 1874 [2024-11-27 20:00:43,663 INFO L226 Difference]: Without dead ends: 1000 [2024-11-27 20:00:43,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:43,668 INFO L435 NwaCegarLoop]: 879 mSDtfsCounter, 511 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:43,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 1391 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:00:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2024-11-27 20:00:43,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 994. [2024-11-27 20:00:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 824 states have (on average 1.5631067961165048) internal successors, (1288), 826 states have internal predecessors, (1288), 164 states have call successors, (164), 5 states have call predecessors, (164), 5 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-27 20:00:43,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1616 transitions. [2024-11-27 20:00:43,883 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1616 transitions. Word has length 501 [2024-11-27 20:00:43,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:43,888 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1616 transitions. [2024-11-27 20:00:43,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:43,888 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1616 transitions. [2024-11-27 20:00:43,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2024-11-27 20:00:43,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:43,908 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:43,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:00:43,908 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:43,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:43,909 INFO L85 PathProgramCache]: Analyzing trace with hash -699023963, now seen corresponding path program 1 times [2024-11-27 20:00:43,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:43,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300588404] [2024-11-27 20:00:43,910 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:43,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:44,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:44,980 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:44,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:44,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300588404] [2024-11-27 20:00:44,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300588404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:44,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:44,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:00:44,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24742469] [2024-11-27 20:00:44,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:44,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:00:44,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:44,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:00:44,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:44,986 INFO L87 Difference]: Start difference. First operand 994 states and 1616 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:45,154 INFO L93 Difference]: Finished difference Result 2170 states and 3529 transitions. [2024-11-27 20:00:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:00:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 501 [2024-11-27 20:00:45,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:45,165 INFO L225 Difference]: With dead ends: 2170 [2024-11-27 20:00:45,166 INFO L226 Difference]: Without dead ends: 1179 [2024-11-27 20:00:45,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:00:45,170 INFO L435 NwaCegarLoop]: 768 mSDtfsCounter, 519 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:45,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1027 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:00:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2024-11-27 20:00:45,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 994. [2024-11-27 20:00:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 824 states have (on average 1.5533980582524272) internal successors, (1280), 826 states have internal predecessors, (1280), 164 states have call successors, (164), 5 states have call predecessors, (164), 5 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-27 20:00:45,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1608 transitions. [2024-11-27 20:00:45,323 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1608 transitions. Word has length 501 [2024-11-27 20:00:45,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:45,324 INFO L471 AbstractCegarLoop]: Abstraction has 994 states and 1608 transitions. [2024-11-27 20:00:45,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:45,325 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1608 transitions. [2024-11-27 20:00:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2024-11-27 20:00:45,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:45,332 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:45,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:00:45,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:45,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2090010425, now seen corresponding path program 1 times [2024-11-27 20:00:45,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:45,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537823213] [2024-11-27 20:00:45,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:45,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:45,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:46,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:46,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:46,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537823213] [2024-11-27 20:00:46,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537823213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:46,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:46,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:00:46,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353245129] [2024-11-27 20:00:46,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:46,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:00:46,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:46,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:00:46,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:00:46,395 INFO L87 Difference]: Start difference. First operand 994 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:46,635 INFO L93 Difference]: Finished difference Result 2194 states and 3553 transitions. [2024-11-27 20:00:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:00:46,637 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 502 [2024-11-27 20:00:46,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:46,647 INFO L225 Difference]: With dead ends: 2194 [2024-11-27 20:00:46,647 INFO L226 Difference]: Without dead ends: 1203 [2024-11-27 20:00:46,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:00:46,652 INFO L435 NwaCegarLoop]: 763 mSDtfsCounter, 532 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:46,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1780 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:00:46,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2024-11-27 20:00:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1006. [2024-11-27 20:00:46,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1006 states, 836 states have (on average 1.5502392344497609) internal successors, (1296), 838 states have internal predecessors, (1296), 164 states have call successors, (164), 5 states have call predecessors, (164), 5 states have return successors, (164), 162 states have call predecessors, (164), 164 states have call successors, (164) [2024-11-27 20:00:46,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1624 transitions. [2024-11-27 20:00:46,838 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1624 transitions. Word has length 502 [2024-11-27 20:00:46,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:46,841 INFO L471 AbstractCegarLoop]: Abstraction has 1006 states and 1624 transitions. [2024-11-27 20:00:46,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1624 transitions. [2024-11-27 20:00:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-27 20:00:46,849 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:46,850 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:46,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:00:46,850 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:46,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:46,851 INFO L85 PathProgramCache]: Analyzing trace with hash 826339899, now seen corresponding path program 1 times [2024-11-27 20:00:46,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046099079] [2024-11-27 20:00:46,852 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:46,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:48,366 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:00:48,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:48,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046099079] [2024-11-27 20:00:48,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046099079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:00:48,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:00:48,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:00:48,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495759387] [2024-11-27 20:00:48,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:00:48,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:00:48,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:48,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:00:48,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:00:48,371 INFO L87 Difference]: Start difference. First operand 1006 states and 1624 transitions. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:49,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:00:49,490 INFO L93 Difference]: Finished difference Result 3725 states and 6030 transitions. [2024-11-27 20:00:49,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:00:49,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 503 [2024-11-27 20:00:49,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:00:49,511 INFO L225 Difference]: With dead ends: 3725 [2024-11-27 20:00:49,511 INFO L226 Difference]: Without dead ends: 2722 [2024-11-27 20:00:49,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:00:49,516 INFO L435 NwaCegarLoop]: 509 mSDtfsCounter, 1009 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:00:49,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1882 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:00:49,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2024-11-27 20:00:49,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2005. [2024-11-27 20:00:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1666 states have (on average 1.5498199279711884) internal successors, (2582), 1670 states have internal predecessors, (2582), 328 states have call successors, (328), 10 states have call predecessors, (328), 10 states have return successors, (328), 324 states have call predecessors, (328), 328 states have call successors, (328) [2024-11-27 20:00:49,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 3238 transitions. [2024-11-27 20:00:49,925 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 3238 transitions. Word has length 503 [2024-11-27 20:00:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:00:49,929 INFO L471 AbstractCegarLoop]: Abstraction has 2005 states and 3238 transitions. [2024-11-27 20:00:49,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:00:49,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 3238 transitions. [2024-11-27 20:00:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-27 20:00:49,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:00:49,942 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:00:49,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:00:49,943 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:00:49,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:00:49,944 INFO L85 PathProgramCache]: Analyzing trace with hash -231498179, now seen corresponding path program 1 times [2024-11-27 20:00:49,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:00:49,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100198090] [2024-11-27 20:00:49,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:49,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:00:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 21 proven. 198 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:00:54,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:00:54,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100198090] [2024-11-27 20:00:54,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100198090] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:00:54,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5179617] [2024-11-27 20:00:54,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:00:54,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:00:54,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:00:54,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:00:54,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:00:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:00:55,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-27 20:00:55,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:00:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 1935 proven. 198 refuted. 0 times theorem prover too weak. 8671 trivial. 0 not checked. [2024-11-27 20:00:57,300 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:00:58,943 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 21 proven. 198 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:00:58,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5179617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:00:58,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:00:58,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-11-27 20:00:58,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876682056] [2024-11-27 20:00:58,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:00:58,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:00:58,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:00:58,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:00:58,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:00:58,950 INFO L87 Difference]: Start difference. First operand 2005 states and 3238 transitions. Second operand has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2024-11-27 20:01:00,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:00,830 INFO L93 Difference]: Finished difference Result 4083 states and 6532 transitions. [2024-11-27 20:01:00,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:01:00,831 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) Word has length 503 [2024-11-27 20:01:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:00,848 INFO L225 Difference]: With dead ends: 4083 [2024-11-27 20:01:00,848 INFO L226 Difference]: Without dead ends: 2081 [2024-11-27 20:01:00,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1019 GetRequests, 1002 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:01:00,855 INFO L435 NwaCegarLoop]: 586 mSDtfsCounter, 861 mSDsluCounter, 2443 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 3029 SdHoareTripleChecker+Invalid, 886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:00,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 3029 Invalid, 886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:01:00,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2024-11-27 20:01:01,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1839. [2024-11-27 20:01:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1839 states, 1516 states have (on average 1.5408970976253298) internal successors, (2336), 1518 states have internal predecessors, (2336), 308 states have call successors, (308), 14 states have call predecessors, (308), 14 states have return successors, (308), 306 states have call predecessors, (308), 308 states have call successors, (308) [2024-11-27 20:01:01,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2952 transitions. [2024-11-27 20:01:01,123 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2952 transitions. Word has length 503 [2024-11-27 20:01:01,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:01,125 INFO L471 AbstractCegarLoop]: Abstraction has 1839 states and 2952 transitions. [2024-11-27 20:01:01,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.7) internal successors, (147), 10 states have internal predecessors, (147), 2 states have call successors, (140), 2 states have call predecessors, (140), 4 states have return successors, (141), 2 states have call predecessors, (141), 2 states have call successors, (141) [2024-11-27 20:01:01,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2952 transitions. [2024-11-27 20:01:01,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 504 [2024-11-27 20:01:01,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:01,135 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:01,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:01:01,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:01,337 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:01,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:01,338 INFO L85 PathProgramCache]: Analyzing trace with hash 600629053, now seen corresponding path program 1 times [2024-11-27 20:01:01,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:01,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535245422] [2024-11-27 20:01:01,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:01,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 27 proven. 192 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:04,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535245422] [2024-11-27 20:01:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535245422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127328594] [2024-11-27 20:01:04,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:04,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:04,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:01:04,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:04,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 1214 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 20:01:04,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:06,270 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4143 proven. 54 refuted. 0 times theorem prover too weak. 6607 trivial. 0 not checked. [2024-11-27 20:01:06,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 165 proven. 54 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:07,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127328594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:07,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:01:07,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2024-11-27 20:01:07,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152793580] [2024-11-27 20:01:07,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:07,518 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:01:07,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:07,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:01:07,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:01:07,521 INFO L87 Difference]: Start difference. First operand 1839 states and 2952 transitions. Second operand has 17 states, 17 states have (on average 18.176470588235293) internal successors, (309), 17 states have internal predecessors, (309), 5 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (213), 5 states have call predecessors, (213), 5 states have call successors, (213) [2024-11-27 20:01:17,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:17,422 INFO L93 Difference]: Finished difference Result 6927 states and 10890 transitions. [2024-11-27 20:01:17,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2024-11-27 20:01:17,423 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 18.176470588235293) internal successors, (309), 17 states have internal predecessors, (309), 5 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (213), 5 states have call predecessors, (213), 5 states have call successors, (213) Word has length 503 [2024-11-27 20:01:17,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:17,461 INFO L225 Difference]: With dead ends: 6927 [2024-11-27 20:01:17,462 INFO L226 Difference]: Without dead ends: 5091 [2024-11-27 20:01:17,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 999 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1552 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=839, Invalid=3853, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 20:01:17,472 INFO L435 NwaCegarLoop]: 1247 mSDtfsCounter, 4571 mSDsluCounter, 6391 mSDsCounter, 0 mSdLazyCounter, 4823 mSolverCounterSat, 1082 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4585 SdHoareTripleChecker+Valid, 7638 SdHoareTripleChecker+Invalid, 5905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1082 IncrementalHoareTripleChecker+Valid, 4823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:17,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4585 Valid, 7638 Invalid, 5905 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1082 Valid, 4823 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-27 20:01:17,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5091 states. [2024-11-27 20:01:18,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5091 to 4883. [2024-11-27 20:01:18,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4883 states, 3606 states have (on average 1.4531336661120355) internal successors, (5240), 3611 states have internal predecessors, (5240), 1201 states have call successors, (1201), 75 states have call predecessors, (1201), 75 states have return successors, (1201), 1196 states have call predecessors, (1201), 1201 states have call successors, (1201) [2024-11-27 20:01:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 7642 transitions. [2024-11-27 20:01:18,212 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 7642 transitions. Word has length 503 [2024-11-27 20:01:18,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:18,214 INFO L471 AbstractCegarLoop]: Abstraction has 4883 states and 7642 transitions. [2024-11-27 20:01:18,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 18.176470588235293) internal successors, (309), 17 states have internal predecessors, (309), 5 states have call successors, (212), 3 states have call predecessors, (212), 6 states have return successors, (213), 5 states have call predecessors, (213), 5 states have call successors, (213) [2024-11-27 20:01:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 7642 transitions. [2024-11-27 20:01:18,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-27 20:01:18,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:18,226 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:18,245 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:01:18,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:18,427 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:18,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:18,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1271524273, now seen corresponding path program 1 times [2024-11-27 20:01:18,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:18,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252793899] [2024-11-27 20:01:18,428 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:18,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:20,646 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:01:20,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:20,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252793899] [2024-11-27 20:01:20,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252793899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:20,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:20,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:01:20,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378479995] [2024-11-27 20:01:20,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:20,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:01:20,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:20,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:01:20,649 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:01:20,650 INFO L87 Difference]: Start difference. First operand 4883 states and 7642 transitions. Second operand has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:23,709 INFO L93 Difference]: Finished difference Result 18143 states and 28255 transitions. [2024-11-27 20:01:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:01:23,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 504 [2024-11-27 20:01:23,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:23,820 INFO L225 Difference]: With dead ends: 18143 [2024-11-27 20:01:23,824 INFO L226 Difference]: Without dead ends: 13359 [2024-11-27 20:01:23,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:01:23,846 INFO L435 NwaCegarLoop]: 743 mSDtfsCounter, 1014 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 2799 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:23,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 2799 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:01:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13359 states. [2024-11-27 20:01:25,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13359 to 12009. [2024-11-27 20:01:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12009 states, 8939 states have (on average 1.4515046425774696) internal successors, (12975), 8976 states have internal predecessors, (12975), 2865 states have call successors, (2865), 204 states have call predecessors, (2865), 204 states have return successors, (2865), 2828 states have call predecessors, (2865), 2865 states have call successors, (2865) [2024-11-27 20:01:25,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18705 transitions. [2024-11-27 20:01:25,871 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18705 transitions. Word has length 504 [2024-11-27 20:01:25,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:25,872 INFO L471 AbstractCegarLoop]: Abstraction has 12009 states and 18705 transitions. [2024-11-27 20:01:25,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.833333333333332) internal successors, (137), 6 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:25,873 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18705 transitions. [2024-11-27 20:01:25,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-27 20:01:25,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:25,882 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:25,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:01:25,883 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:25,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:25,884 INFO L85 PathProgramCache]: Analyzing trace with hash -847877551, now seen corresponding path program 1 times [2024-11-27 20:01:25,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:25,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271194930] [2024-11-27 20:01:25,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:25,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:26,825 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:01:26,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:26,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271194930] [2024-11-27 20:01:26,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271194930] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:26,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:26,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:26,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689558156] [2024-11-27 20:01:26,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:26,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:26,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:26,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:26,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:26,834 INFO L87 Difference]: Start difference. First operand 12009 states and 18705 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:28,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:28,658 INFO L93 Difference]: Finished difference Result 26279 states and 40959 transitions. [2024-11-27 20:01:28,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:28,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 504 [2024-11-27 20:01:28,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:28,742 INFO L225 Difference]: With dead ends: 26279 [2024-11-27 20:01:28,742 INFO L226 Difference]: Without dead ends: 14373 [2024-11-27 20:01:28,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:28,776 INFO L435 NwaCegarLoop]: 579 mSDtfsCounter, 338 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:28,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 1078 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 20:01:28,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14373 states. [2024-11-27 20:01:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14373 to 14371. [2024-11-27 20:01:31,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14371 states, 10757 states have (on average 1.4529143813330854) internal successors, (15629), 10798 states have internal predecessors, (15629), 3373 states have call successors, (3373), 240 states have call predecessors, (3373), 240 states have return successors, (3373), 3332 states have call predecessors, (3373), 3373 states have call successors, (3373) [2024-11-27 20:01:31,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14371 states to 14371 states and 22375 transitions. [2024-11-27 20:01:31,345 INFO L78 Accepts]: Start accepts. Automaton has 14371 states and 22375 transitions. Word has length 504 [2024-11-27 20:01:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:31,347 INFO L471 AbstractCegarLoop]: Abstraction has 14371 states and 22375 transitions. [2024-11-27 20:01:31,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:31,348 INFO L276 IsEmpty]: Start isEmpty. Operand 14371 states and 22375 transitions. [2024-11-27 20:01:31,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2024-11-27 20:01:31,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:31,367 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:31,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:01:31,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:31,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 2075282447, now seen corresponding path program 1 times [2024-11-27 20:01:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:31,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055039206] [2024-11-27 20:01:31,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:31,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 60 proven. 159 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:33,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055039206] [2024-11-27 20:01:33,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055039206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:33,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030672753] [2024-11-27 20:01:33,676 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:33,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:33,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:33,681 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:33,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:01:34,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:34,294 INFO L256 TraceCheckSpWp]: Trace formula consists of 1215 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:01:34,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:35,173 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5343 proven. 126 refuted. 0 times theorem prover too weak. 5335 trivial. 0 not checked. [2024-11-27 20:01:35,173 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 93 proven. 126 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:35,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2030672753] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:35,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:01:35,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2024-11-27 20:01:35,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584950579] [2024-11-27 20:01:35,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:35,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:01:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:35,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:01:35,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:01:35,939 INFO L87 Difference]: Start difference. First operand 14371 states and 22375 transitions. Second operand has 10 states, 10 states have (on average 29.1) internal successors, (291), 10 states have internal predecessors, (291), 4 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) [2024-11-27 20:01:39,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:39,114 INFO L93 Difference]: Finished difference Result 29625 states and 45408 transitions. [2024-11-27 20:01:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:01:39,115 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 29.1) internal successors, (291), 10 states have internal predecessors, (291), 4 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) Word has length 504 [2024-11-27 20:01:39,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:39,210 INFO L225 Difference]: With dead ends: 29625 [2024-11-27 20:01:39,210 INFO L226 Difference]: Without dead ends: 15357 [2024-11-27 20:01:39,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1026 GetRequests, 1006 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:01:39,251 INFO L435 NwaCegarLoop]: 439 mSDtfsCounter, 1449 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:39,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 1218 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:01:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15357 states. [2024-11-27 20:01:41,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15357 to 14843. [2024-11-27 20:01:41,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14843 states, 11087 states have (on average 1.4260846035897898) internal successors, (15811), 11128 states have internal predecessors, (15811), 3373 states have call successors, (3373), 382 states have call predecessors, (3373), 382 states have return successors, (3373), 3332 states have call predecessors, (3373), 3373 states have call successors, (3373) [2024-11-27 20:01:41,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14843 states to 14843 states and 22557 transitions. [2024-11-27 20:01:41,458 INFO L78 Accepts]: Start accepts. Automaton has 14843 states and 22557 transitions. Word has length 504 [2024-11-27 20:01:41,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:41,459 INFO L471 AbstractCegarLoop]: Abstraction has 14843 states and 22557 transitions. [2024-11-27 20:01:41,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 29.1) internal successors, (291), 10 states have internal predecessors, (291), 4 states have call successors, (169), 2 states have call predecessors, (169), 4 states have return successors, (171), 4 states have call predecessors, (171), 4 states have call successors, (171) [2024-11-27 20:01:41,460 INFO L276 IsEmpty]: Start isEmpty. Operand 14843 states and 22557 transitions. [2024-11-27 20:01:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-27 20:01:41,476 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:41,477 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:41,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:01:41,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:01:41,682 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:41,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash -900664353, now seen corresponding path program 1 times [2024-11-27 20:01:41,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:41,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774349390] [2024-11-27 20:01:41,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:41,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:41,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:01:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774349390] [2024-11-27 20:01:42,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774349390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:01:42,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:01:42,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:01:42,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205010798] [2024-11-27 20:01:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:01:42,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:01:42,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:42,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:01:42,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:42,782 INFO L87 Difference]: Start difference. First operand 14843 states and 22557 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:44,989 INFO L93 Difference]: Finished difference Result 34411 states and 52235 transitions. [2024-11-27 20:01:44,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:01:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 506 [2024-11-27 20:01:44,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:45,098 INFO L225 Difference]: With dead ends: 34411 [2024-11-27 20:01:45,099 INFO L226 Difference]: Without dead ends: 19679 [2024-11-27 20:01:45,136 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:01:45,138 INFO L435 NwaCegarLoop]: 510 mSDtfsCounter, 365 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:45,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 1008 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:01:45,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19679 states. [2024-11-27 20:01:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19679 to 19653. [2024-11-27 20:01:47,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19653 states, 14647 states have (on average 1.4216563118727386) internal successors, (20823), 14698 states have internal predecessors, (20823), 4483 states have call successors, (4483), 522 states have call predecessors, (4483), 522 states have return successors, (4483), 4432 states have call predecessors, (4483), 4483 states have call successors, (4483) [2024-11-27 20:01:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19653 states to 19653 states and 29789 transitions. [2024-11-27 20:01:47,329 INFO L78 Accepts]: Start accepts. Automaton has 19653 states and 29789 transitions. Word has length 506 [2024-11-27 20:01:47,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:01:47,330 INFO L471 AbstractCegarLoop]: Abstraction has 19653 states and 29789 transitions. [2024-11-27 20:01:47,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:01:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 19653 states and 29789 transitions. [2024-11-27 20:01:47,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-27 20:01:47,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:01:47,344 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:01:47,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:01:47,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:01:47,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:01:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1741603617, now seen corresponding path program 1 times [2024-11-27 20:01:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:01:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136037978] [2024-11-27 20:01:47,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:47,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:01:48,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:50,031 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 51 proven. 168 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:50,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:01:50,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136037978] [2024-11-27 20:01:50,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136037978] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:01:50,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796533660] [2024-11-27 20:01:50,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:01:50,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:01:50,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:01:50,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:01:50,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:01:50,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:01:50,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 1218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:01:50,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:01:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 5235 proven. 132 refuted. 0 times theorem prover too weak. 5437 trivial. 0 not checked. [2024-11-27 20:01:51,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:01:52,174 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:01:52,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796533660] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:01:52,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:01:52,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 13 [2024-11-27 20:01:52,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493632184] [2024-11-27 20:01:52,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:01:52,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:01:52,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:01:52,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:01:52,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:01:52,179 INFO L87 Difference]: Start difference. First operand 19653 states and 29789 transitions. Second operand has 13 states, 13 states have (on average 21.153846153846153) internal successors, (275), 13 states have internal predecessors, (275), 5 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 5 states have call predecessors, (193), 5 states have call successors, (193) [2024-11-27 20:01:57,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:01:57,377 INFO L93 Difference]: Finished difference Result 51918 states and 78218 transitions. [2024-11-27 20:01:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:01:57,378 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.153846153846153) internal successors, (275), 13 states have internal predecessors, (275), 5 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 5 states have call predecessors, (193), 5 states have call successors, (193) Word has length 506 [2024-11-27 20:01:57,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:01:57,560 INFO L225 Difference]: With dead ends: 51918 [2024-11-27 20:01:57,560 INFO L226 Difference]: Without dead ends: 32376 [2024-11-27 20:01:57,624 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1040 GetRequests, 1011 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=282, Invalid=648, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:01:57,625 INFO L435 NwaCegarLoop]: 392 mSDtfsCounter, 4932 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 710 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 2625 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 710 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:01:57,625 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4961 Valid, 2625 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [710 Valid, 955 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 20:01:57,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32376 states. [2024-11-27 20:02:00,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32376 to 22713. [2024-11-27 20:02:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22713 states, 18210 states have (on average 1.456397583745195) internal successors, (26521), 18291 states have internal predecessors, (26521), 3921 states have call successors, (3921), 581 states have call predecessors, (3921), 581 states have return successors, (3921), 3840 states have call predecessors, (3921), 3921 states have call successors, (3921) [2024-11-27 20:02:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22713 states to 22713 states and 34363 transitions. [2024-11-27 20:02:00,806 INFO L78 Accepts]: Start accepts. Automaton has 22713 states and 34363 transitions. Word has length 506 [2024-11-27 20:02:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:00,807 INFO L471 AbstractCegarLoop]: Abstraction has 22713 states and 34363 transitions. [2024-11-27 20:02:00,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.153846153846153) internal successors, (275), 13 states have internal predecessors, (275), 5 states have call successors, (192), 2 states have call predecessors, (192), 4 states have return successors, (193), 5 states have call predecessors, (193), 5 states have call successors, (193) [2024-11-27 20:02:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 22713 states and 34363 transitions. [2024-11-27 20:02:00,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2024-11-27 20:02:00,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:00,821 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:00,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:02:01,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:02:01,022 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:01,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:01,023 INFO L85 PathProgramCache]: Analyzing trace with hash 80153943, now seen corresponding path program 1 times [2024-11-27 20:02:01,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:01,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706552213] [2024-11-27 20:02:01,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:01,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:03,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 72 proven. 147 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:02:03,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:03,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706552213] [2024-11-27 20:02:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706552213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:03,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127278976] [2024-11-27 20:02:03,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:03,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:03,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:03,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:03,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:02:04,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:04,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:02:04,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:04,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4545 proven. 63 refuted. 0 times theorem prover too weak. 6196 trivial. 0 not checked. [2024-11-27 20:02:04,817 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 156 proven. 63 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:02:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127278976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:05,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:02:05,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-27 20:02:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275725697] [2024-11-27 20:02:05,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:05,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:02:05,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:05,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:02:05,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:02:05,457 INFO L87 Difference]: Start difference. First operand 22713 states and 34363 transitions. Second operand has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 3 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) [2024-11-27 20:02:06,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:06,833 INFO L93 Difference]: Finished difference Result 26018 states and 39257 transitions. [2024-11-27 20:02:06,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:02:06,834 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 3 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) Word has length 506 [2024-11-27 20:02:06,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:06,863 INFO L225 Difference]: With dead ends: 26018 [2024-11-27 20:02:06,864 INFO L226 Difference]: Without dead ends: 3424 [2024-11-27 20:02:06,902 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1027 GetRequests, 1009 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:02:06,903 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 742 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 1243 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:06,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 1243 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:02:06,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2024-11-27 20:02:07,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 3294. [2024-11-27 20:02:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3294 states, 2655 states have (on average 1.4184557438794727) internal successors, (3766), 2666 states have internal predecessors, (3766), 545 states have call successors, (545), 93 states have call predecessors, (545), 93 states have return successors, (545), 534 states have call predecessors, (545), 545 states have call successors, (545) [2024-11-27 20:02:07,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3294 states to 3294 states and 4856 transitions. [2024-11-27 20:02:07,391 INFO L78 Accepts]: Start accepts. Automaton has 3294 states and 4856 transitions. Word has length 506 [2024-11-27 20:02:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:07,393 INFO L471 AbstractCegarLoop]: Abstraction has 3294 states and 4856 transitions. [2024-11-27 20:02:07,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.88888888888889) internal successors, (233), 9 states have internal predecessors, (233), 3 states have call successors, (144), 2 states have call predecessors, (144), 4 states have return successors, (146), 3 states have call predecessors, (146), 3 states have call successors, (146) [2024-11-27 20:02:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 3294 states and 4856 transitions. [2024-11-27 20:02:07,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-27 20:02:07,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:07,400 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:07,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:02:07,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-27 20:02:07,605 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:07,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:07,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1951696171, now seen corresponding path program 1 times [2024-11-27 20:02:07,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:07,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806642522] [2024-11-27 20:02:07,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:07,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:02:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806642522] [2024-11-27 20:02:07,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806642522] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:07,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:02:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:02:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210507807] [2024-11-27 20:02:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:07,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:02:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:07,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:02:07,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:02:07,912 INFO L87 Difference]: Start difference. First operand 3294 states and 4856 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:02:08,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:08,546 INFO L93 Difference]: Finished difference Result 9628 states and 14224 transitions. [2024-11-27 20:02:08,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:02:08,547 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 507 [2024-11-27 20:02:08,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:08,576 INFO L225 Difference]: With dead ends: 9628 [2024-11-27 20:02:08,576 INFO L226 Difference]: Without dead ends: 6461 [2024-11-27 20:02:08,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:02:08,585 INFO L435 NwaCegarLoop]: 811 mSDtfsCounter, 450 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:08,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 1256 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:02:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2024-11-27 20:02:09,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6438. [2024-11-27 20:02:09,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6438 states, 5226 states have (on average 1.4125526215078454) internal successors, (7382), 5247 states have internal predecessors, (7382), 1035 states have call successors, (1035), 176 states have call predecessors, (1035), 176 states have return successors, (1035), 1014 states have call predecessors, (1035), 1035 states have call successors, (1035) [2024-11-27 20:02:09,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6438 states to 6438 states and 9452 transitions. [2024-11-27 20:02:09,535 INFO L78 Accepts]: Start accepts. Automaton has 6438 states and 9452 transitions. Word has length 507 [2024-11-27 20:02:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:09,536 INFO L471 AbstractCegarLoop]: Abstraction has 6438 states and 9452 transitions. [2024-11-27 20:02:09,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:02:09,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6438 states and 9452 transitions. [2024-11-27 20:02:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-27 20:02:09,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:09,544 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:09,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:02:09,544 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:09,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:09,545 INFO L85 PathProgramCache]: Analyzing trace with hash -2024082729, now seen corresponding path program 1 times [2024-11-27 20:02:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:09,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400601267] [2024-11-27 20:02:09,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:09,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:10,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10804 trivial. 0 not checked. [2024-11-27 20:02:10,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:10,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400601267] [2024-11-27 20:02:10,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400601267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:02:10,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:02:10,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:02:10,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973913069] [2024-11-27 20:02:10,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:02:10,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:02:10,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:10,161 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:02:10,161 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:02:10,161 INFO L87 Difference]: Start difference. First operand 6438 states and 9452 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:02:11,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:02:11,604 INFO L93 Difference]: Finished difference Result 15916 states and 23416 transitions. [2024-11-27 20:02:11,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:02:11,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) Word has length 507 [2024-11-27 20:02:11,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:02:11,653 INFO L225 Difference]: With dead ends: 15916 [2024-11-27 20:02:11,653 INFO L226 Difference]: Without dead ends: 9605 [2024-11-27 20:02:11,671 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:02:11,672 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 279 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:02:11,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 898 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:02:11,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9605 states. [2024-11-27 20:02:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9605 to 9582. [2024-11-27 20:02:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9582 states, 7797 states have (on average 1.4105425163524432) internal successors, (10998), 7828 states have internal predecessors, (10998), 1525 states have call successors, (1525), 259 states have call predecessors, (1525), 259 states have return successors, (1525), 1494 states have call predecessors, (1525), 1525 states have call successors, (1525) [2024-11-27 20:02:13,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9582 states to 9582 states and 14048 transitions. [2024-11-27 20:02:13,324 INFO L78 Accepts]: Start accepts. Automaton has 9582 states and 14048 transitions. Word has length 507 [2024-11-27 20:02:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:02:13,325 INFO L471 AbstractCegarLoop]: Abstraction has 9582 states and 14048 transitions. [2024-11-27 20:02:13,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 1 states have call successors, (74), 1 states have call predecessors, (74), 1 states have return successors, (74), 1 states have call predecessors, (74), 1 states have call successors, (74) [2024-11-27 20:02:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 9582 states and 14048 transitions. [2024-11-27 20:02:13,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 508 [2024-11-27 20:02:13,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:02:13,335 INFO L218 NwaCegarLoop]: trace histogram [74, 74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:02:13,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:02:13,336 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:02:13,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:02:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1107690669, now seen corresponding path program 1 times [2024-11-27 20:02:13,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:02:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130560213] [2024-11-27 20:02:13,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:02:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:16,454 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 87 proven. 132 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:02:16,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:02:16,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130560213] [2024-11-27 20:02:16,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130560213] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:02:16,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180450415] [2024-11-27 20:02:16,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:02:16,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:02:16,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:02:16,460 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:02:16,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb3528c8-e219-4468-ba38-528dcd625cb9/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:02:17,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:02:17,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 1211 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:02:17,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:02:17,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 4285 proven. 57 refuted. 0 times theorem prover too weak. 6462 trivial. 0 not checked. [2024-11-27 20:02:17,547 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:02:18,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10804 backedges. 162 proven. 57 refuted. 0 times theorem prover too weak. 10585 trivial. 0 not checked. [2024-11-27 20:02:18,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180450415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:02:18,154 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:02:18,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-27 20:02:18,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237158410] [2024-11-27 20:02:18,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:02:18,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:02:18,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:02:18,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:02:18,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:02:18,158 INFO L87 Difference]: Start difference. First operand 9582 states and 14048 transitions. Second operand has 10 states, 10 states have (on average 21.7) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (137), 2 states have call predecessors, (137), 4 states have return successors, (139), 3 states have call predecessors, (139), 3 states have call successors, (139)