./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.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_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1 --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 6220e6745b3165a6fc1efc167bda264ea9d52d0f56711813aaca8387b0aa2cbd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 11:00:19,374 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 11:00:19,431 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 11:00:19,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 11:00:19,436 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 11:00:19,458 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 11:00:19,458 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 11:00:19,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 11:00:19,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 11:00:19,459 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 11:00:19,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 11:00:19,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 11:00:19,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 11:00:19,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 11:00:19,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 11:00:19,460 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 11:00:19,461 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:00:19,461 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 11:00:19,461 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:00:19,462 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 11:00:19,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 11:00:19,463 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 11:00:19,463 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_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1 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 -> 6220e6745b3165a6fc1efc167bda264ea9d52d0f56711813aaca8387b0aa2cbd [2024-12-02 11:00:19,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 11:00:19,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 11:00:19,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 11:00:19,707 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 11:00:19,707 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 11:00:19,708 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.i [2024-12-02 11:00:22,346 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/data/9b4374604/32764105b9274d45a5e98bb26ee14225/FLAGfebbd18ad [2024-12-02 11:00:22,631 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 11:00:22,632 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.i [2024-12-02 11:00:22,643 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/data/9b4374604/32764105b9274d45a5e98bb26ee14225/FLAGfebbd18ad [2024-12-02 11:00:22,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/data/9b4374604/32764105b9274d45a5e98bb26ee14225 [2024-12-02 11:00:22,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 11:00:22,657 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 11:00:22,658 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 11:00:22,658 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 11:00:22,661 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 11:00:22,662 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:22" (1/1) ... [2024-12-02 11:00:22,662 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49835da9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:22, skipping insertion in model container [2024-12-02 11:00:22,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 11:00:22" (1/1) ... [2024-12-02 11:00:22,696 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 11:00:22,826 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_402300d5-8ccb-4426-a508-062fb24ce561/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.i[915,928] [2024-12-02 11:00:23,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:00:23,015 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 11:00:23,023 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_402300d5-8ccb-4426-a508-062fb24ce561/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-0.i[915,928] [2024-12-02 11:00:23,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 11:00:23,143 INFO L204 MainTranslator]: Completed translation [2024-12-02 11:00:23,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23 WrapperNode [2024-12-02 11:00:23,144 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 11:00:23,145 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 11:00:23,145 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 11:00:23,145 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 11:00:23,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,166 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,245 INFO L138 Inliner]: procedures = 26, calls = 74, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 719 [2024-12-02 11:00:23,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 11:00:23,246 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 11:00:23,246 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 11:00:23,246 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 11:00:23,270 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,271 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,284 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,317 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]. [2024-12-02 11:00:23,317 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,317 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,338 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,341 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,352 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,356 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,367 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 11:00:23,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 11:00:23,368 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 11:00:23,368 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 11:00:23,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (1/1) ... [2024-12-02 11:00:23,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 11:00:23,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:23,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 11:00:23,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 11:00:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 11:00:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 11:00:23,421 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 11:00:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 11:00:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 11:00:23,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 11:00:23,538 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 11:00:23,539 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 11:00:24,691 INFO L? ?]: Removed 90 outVars from TransFormulas that were not future-live. [2024-12-02 11:00:24,692 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 11:00:24,708 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 11:00:24,708 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 11:00:24,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:24 BoogieIcfgContainer [2024-12-02 11:00:24,709 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 11:00:24,711 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 11:00:24,712 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 11:00:24,716 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 11:00:24,716 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 11:00:22" (1/3) ... [2024-12-02 11:00:24,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564cb6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:00:24, skipping insertion in model container [2024-12-02 11:00:24,717 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 11:00:23" (2/3) ... [2024-12-02 11:00:24,717 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564cb6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 11:00:24, skipping insertion in model container [2024-12-02 11:00:24,718 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 11:00:24" (3/3) ... [2024-12-02 11:00:24,719 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-0.i [2024-12-02 11:00:24,734 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 11:00:24,736 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-0.i that has 2 procedures, 290 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 11:00:24,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 11:00:24,812 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;@ddc462e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 11:00:24,812 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 11:00:24,817 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 226 states have (on average 1.5575221238938053) internal successors, (352), 227 states have internal predecessors, (352), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-12-02 11:00:24,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:24,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:24,843 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:24,843 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:24,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:24,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1702141139, now seen corresponding path program 1 times [2024-12-02 11:00:24,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:24,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778239617] [2024-12-02 11:00:24,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:24,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:25,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-12-02 11:00:25,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:25,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778239617] [2024-12-02 11:00:25,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778239617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:25,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767072727] [2024-12-02 11:00:25,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:25,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:25,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:25,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:25,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 11:00:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:25,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 1103 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 11:00:25,842 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 7200 trivial. 0 not checked. [2024-12-02 11:00:25,889 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 11:00:25,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767072727] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:25,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 11:00:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 11:00:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963251213] [2024-12-02 11:00:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:25,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 11:00:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:25,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 11:00:25,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:00:25,915 INFO L87 Difference]: Start difference. First operand has 290 states, 226 states have (on average 1.5575221238938053) internal successors, (352), 227 states have internal predecessors, (352), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-12-02 11:00:25,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:25,969 INFO L93 Difference]: Finished difference Result 573 states and 1003 transitions. [2024-12-02 11:00:25,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 11:00:25,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) Word has length 429 [2024-12-02 11:00:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:25,979 INFO L225 Difference]: With dead ends: 573 [2024-12-02 11:00:25,980 INFO L226 Difference]: Without dead ends: 286 [2024-12-02 11:00:25,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 11:00:25,987 INFO L435 NwaCegarLoop]: 466 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, 466 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 [2024-12-02 11:00:25,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:00:26,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-12-02 11:00:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-12-02 11:00:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 223 states have (on average 1.5426008968609866) internal successors, (344), 223 states have internal predecessors, (344), 61 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2024-12-02 11:00:26,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 466 transitions. [2024-12-02 11:00:26,047 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 466 transitions. Word has length 429 [2024-12-02 11:00:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:26,048 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 466 transitions. [2024-12-02 11:00:26,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 64.5) internal successors, (129), 2 states have internal predecessors, (129), 2 states have call successors, (61), 2 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 2 states have call successors, (61) [2024-12-02 11:00:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 466 transitions. [2024-12-02 11:00:26,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:26,057 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:26,057 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:26,066 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 11:00:26,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 11:00:26,258 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:26,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:26,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1423623589, now seen corresponding path program 1 times [2024-12-02 11:00:26,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:26,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373609084] [2024-12-02 11:00:26,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:26,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:26,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:26,715 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:26,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:26,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373609084] [2024-12-02 11:00:26,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373609084] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:26,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:26,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:00:26,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342545641] [2024-12-02 11:00:26,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:26,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:00:26,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:26,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:00:26,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:00:26,718 INFO L87 Difference]: Start difference. First operand 286 states and 466 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:26,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:26,813 INFO L93 Difference]: Finished difference Result 733 states and 1194 transitions. [2024-12-02 11:00:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:00:26,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:26,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:26,819 INFO L225 Difference]: With dead ends: 733 [2024-12-02 11:00:26,819 INFO L226 Difference]: Without dead ends: 450 [2024-12-02 11:00:26,820 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 [2024-12-02 11:00:26,820 INFO L435 NwaCegarLoop]: 585 mSDtfsCounter, 262 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:26,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1030 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:00:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2024-12-02 11:00:26,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 447. [2024-12-02 11:00:26,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 373 states have (on average 1.5656836461126005) internal successors, (584), 374 states have internal predecessors, (584), 71 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (71), 70 states have call predecessors, (71), 71 states have call successors, (71) [2024-12-02 11:00:26,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 726 transitions. [2024-12-02 11:00:26,856 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 726 transitions. Word has length 429 [2024-12-02 11:00:26,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:26,857 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 726 transitions. [2024-12-02 11:00:26,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 726 transitions. [2024-12-02 11:00:26,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:26,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:26,862 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:26,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 11:00:26,863 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:26,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:26,863 INFO L85 PathProgramCache]: Analyzing trace with hash 909769049, now seen corresponding path program 1 times [2024-12-02 11:00:26,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:26,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033322681] [2024-12-02 11:00:26,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:26,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:27,153 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:27,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:27,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033322681] [2024-12-02 11:00:27,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033322681] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:27,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:27,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:00:27,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279503934] [2024-12-02 11:00:27,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:27,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:00:27,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:27,155 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:00:27,155 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:00:27,156 INFO L87 Difference]: Start difference. First operand 447 states and 726 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:27,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:27,267 INFO L93 Difference]: Finished difference Result 1230 states and 1994 transitions. [2024-12-02 11:00:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:00:27,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:27,275 INFO L225 Difference]: With dead ends: 1230 [2024-12-02 11:00:27,275 INFO L226 Difference]: Without dead ends: 786 [2024-12-02 11:00:27,276 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 [2024-12-02 11:00:27,277 INFO L435 NwaCegarLoop]: 697 mSDtfsCounter, 288 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:27,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1134 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:00:27,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-12-02 11:00:27,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 782. [2024-12-02 11:00:27,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 694 states have (on average 1.5778097982708934) internal successors, (1095), 697 states have internal predecessors, (1095), 83 states have call successors, (83), 4 states have call predecessors, (83), 4 states have return successors, (83), 80 states have call predecessors, (83), 83 states have call successors, (83) [2024-12-02 11:00:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1261 transitions. [2024-12-02 11:00:27,324 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1261 transitions. Word has length 429 [2024-12-02 11:00:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:27,325 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1261 transitions. [2024-12-02 11:00:27,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1261 transitions. [2024-12-02 11:00:27,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:27,334 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:27,334 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:27,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 11:00:27,335 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:27,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:27,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1053072221, now seen corresponding path program 1 times [2024-12-02 11:00:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:27,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891179953] [2024-12-02 11:00:27,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:27,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:27,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:27,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891179953] [2024-12-02 11:00:27,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891179953] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:27,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:27,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:00:27,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918133542] [2024-12-02 11:00:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:27,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:00:27,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:27,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:00:27,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:00:27,761 INFO L87 Difference]: Start difference. First operand 782 states and 1261 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:27,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:27,855 INFO L93 Difference]: Finished difference Result 2210 states and 3560 transitions. [2024-12-02 11:00:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:00:27,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:27,864 INFO L225 Difference]: With dead ends: 2210 [2024-12-02 11:00:27,864 INFO L226 Difference]: Without dead ends: 1431 [2024-12-02 11:00:27,865 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 [2024-12-02 11:00:27,866 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 263 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:27,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 902 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:00:27,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1431 states. [2024-12-02 11:00:27,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1431 to 1428. [2024-12-02 11:00:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 1300 states have (on average 1.583076923076923) internal successors, (2058), 1307 states have internal predecessors, (2058), 119 states have call successors, (119), 8 states have call predecessors, (119), 8 states have return successors, (119), 112 states have call predecessors, (119), 119 states have call successors, (119) [2024-12-02 11:00:27,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 2296 transitions. [2024-12-02 11:00:27,928 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 2296 transitions. Word has length 429 [2024-12-02 11:00:27,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:27,929 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 2296 transitions. [2024-12-02 11:00:27,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:27,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 2296 transitions. [2024-12-02 11:00:27,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:27,934 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:27,934 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:27,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 11:00:27,934 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:27,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:27,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1946558559, now seen corresponding path program 1 times [2024-12-02 11:00:27,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:27,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915617767] [2024-12-02 11:00:27,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:27,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:29,543 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:29,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:29,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915617767] [2024-12-02 11:00:29,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915617767] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:29,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:29,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 11:00:29,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265123319] [2024-12-02 11:00:29,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:29,545 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 11:00:29,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:29,546 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 11:00:29,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:00:29,546 INFO L87 Difference]: Start difference. First operand 1428 states and 2296 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:30,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:30,120 INFO L93 Difference]: Finished difference Result 4797 states and 7678 transitions. [2024-12-02 11:00:30,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:00:30,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:30,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:30,137 INFO L225 Difference]: With dead ends: 4797 [2024-12-02 11:00:30,137 INFO L226 Difference]: Without dead ends: 3372 [2024-12-02 11:00:30,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 11:00:30,141 INFO L435 NwaCegarLoop]: 824 mSDtfsCounter, 792 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:30,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [792 Valid, 1889 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:00:30,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3372 states. [2024-12-02 11:00:30,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3372 to 2845. [2024-12-02 11:00:30,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2845 states, 2627 states have (on average 1.5812714122573277) internal successors, (4154), 2643 states have internal predecessors, (4154), 195 states have call successors, (195), 22 states have call predecessors, (195), 22 states have return successors, (195), 179 states have call predecessors, (195), 195 states have call successors, (195) [2024-12-02 11:00:30,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2845 states to 2845 states and 4544 transitions. [2024-12-02 11:00:30,280 INFO L78 Accepts]: Start accepts. Automaton has 2845 states and 4544 transitions. Word has length 429 [2024-12-02 11:00:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:30,281 INFO L471 AbstractCegarLoop]: Abstraction has 2845 states and 4544 transitions. [2024-12-02 11:00:30,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2845 states and 4544 transitions. [2024-12-02 11:00:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:30,289 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:30,289 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:30,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 11:00:30,289 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:30,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:30,290 INFO L85 PathProgramCache]: Analyzing trace with hash 403438962, now seen corresponding path program 1 times [2024-12-02 11:00:30,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:30,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296141605] [2024-12-02 11:00:30,290 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:30,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:30,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:30,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:30,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296141605] [2024-12-02 11:00:30,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296141605] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:30,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:30,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 11:00:30,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185061371] [2024-12-02 11:00:30,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:30,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 11:00:30,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:30,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 11:00:30,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 11:00:30,531 INFO L87 Difference]: Start difference. First operand 2845 states and 4544 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:30,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:30,646 INFO L93 Difference]: Finished difference Result 7931 states and 12774 transitions. [2024-12-02 11:00:30,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 11:00:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:30,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:30,661 INFO L225 Difference]: With dead ends: 7931 [2024-12-02 11:00:30,661 INFO L226 Difference]: Without dead ends: 5113 [2024-12-02 11:00:30,665 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 [2024-12-02 11:00:30,666 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 292 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:30,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 888 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 11:00:30,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5113 states. [2024-12-02 11:00:30,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5113 to 4695. [2024-12-02 11:00:30,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4695 states, 4477 states have (on average 1.6216216216216217) internal successors, (7260), 4493 states have internal predecessors, (7260), 195 states have call successors, (195), 22 states have call predecessors, (195), 22 states have return successors, (195), 179 states have call predecessors, (195), 195 states have call successors, (195) [2024-12-02 11:00:30,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4695 states to 4695 states and 7650 transitions. [2024-12-02 11:00:30,772 INFO L78 Accepts]: Start accepts. Automaton has 4695 states and 7650 transitions. Word has length 429 [2024-12-02 11:00:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:30,773 INFO L471 AbstractCegarLoop]: Abstraction has 4695 states and 7650 transitions. [2024-12-02 11:00:30,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:30,774 INFO L276 IsEmpty]: Start isEmpty. Operand 4695 states and 7650 transitions. [2024-12-02 11:00:30,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:30,780 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:30,781 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:30,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 11:00:30,781 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:30,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:30,781 INFO L85 PathProgramCache]: Analyzing trace with hash 643678708, now seen corresponding path program 1 times [2024-12-02 11:00:30,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:30,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830355361] [2024-12-02 11:00:30,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:30,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:31,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:31,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830355361] [2024-12-02 11:00:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830355361] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:31,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:31,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:00:31,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057056345] [2024-12-02 11:00:31,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:31,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:00:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:31,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:00:31,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:31,578 INFO L87 Difference]: Start difference. First operand 4695 states and 7650 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:32,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:32,088 INFO L93 Difference]: Finished difference Result 16983 states and 27717 transitions. [2024-12-02 11:00:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:00:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:32,122 INFO L225 Difference]: With dead ends: 16983 [2024-12-02 11:00:32,122 INFO L226 Difference]: Without dead ends: 12315 [2024-12-02 11:00:32,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:00:32,128 INFO L435 NwaCegarLoop]: 573 mSDtfsCounter, 657 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1619 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:32,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1619 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:00:32,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12315 states. [2024-12-02 11:00:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12315 to 8643. [2024-12-02 11:00:32,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8643 states, 8361 states have (on average 1.639038392536778) internal successors, (13704), 8385 states have internal predecessors, (13704), 251 states have call successors, (251), 30 states have call predecessors, (251), 30 states have return successors, (251), 227 states have call predecessors, (251), 251 states have call successors, (251) [2024-12-02 11:00:32,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8643 states to 8643 states and 14206 transitions. [2024-12-02 11:00:32,352 INFO L78 Accepts]: Start accepts. Automaton has 8643 states and 14206 transitions. Word has length 429 [2024-12-02 11:00:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:32,352 INFO L471 AbstractCegarLoop]: Abstraction has 8643 states and 14206 transitions. [2024-12-02 11:00:32,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 8643 states and 14206 transitions. [2024-12-02 11:00:32,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:32,362 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:32,362 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:32,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 11:00:32,362 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:32,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:32,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1124758966, now seen corresponding path program 1 times [2024-12-02 11:00:32,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:32,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101704895] [2024-12-02 11:00:32,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:32,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:33,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:33,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101704895] [2024-12-02 11:00:33,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101704895] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:33,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:33,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:00:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893035203] [2024-12-02 11:00:33,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:33,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:00:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:33,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:00:33,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:00:33,677 INFO L87 Difference]: Start difference. First operand 8643 states and 14206 transitions. Second operand has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-12-02 11:00:34,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:34,743 INFO L93 Difference]: Finished difference Result 28617 states and 46804 transitions. [2024-12-02 11:00:34,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:00:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) Word has length 429 [2024-12-02 11:00:34,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:34,788 INFO L225 Difference]: With dead ends: 28617 [2024-12-02 11:00:34,788 INFO L226 Difference]: Without dead ends: 20001 [2024-12-02 11:00:34,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-12-02 11:00:34,800 INFO L435 NwaCegarLoop]: 529 mSDtfsCounter, 958 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:34,800 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 2192 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 11:00:34,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20001 states. [2024-12-02 11:00:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20001 to 17133. [2024-12-02 11:00:35,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17133 states, 16579 states have (on average 1.635502744435732) internal successors, (27115), 16626 states have internal predecessors, (27115), 494 states have call successors, (494), 59 states have call predecessors, (494), 59 states have return successors, (494), 447 states have call predecessors, (494), 494 states have call successors, (494) [2024-12-02 11:00:35,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17133 states to 17133 states and 28103 transitions. [2024-12-02 11:00:35,242 INFO L78 Accepts]: Start accepts. Automaton has 17133 states and 28103 transitions. Word has length 429 [2024-12-02 11:00:35,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:35,242 INFO L471 AbstractCegarLoop]: Abstraction has 17133 states and 28103 transitions. [2024-12-02 11:00:35,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.166666666666668) internal successors, (127), 6 states have internal predecessors, (127), 2 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 2 states have call predecessors, (61), 2 states have call successors, (61) [2024-12-02 11:00:35,243 INFO L276 IsEmpty]: Start isEmpty. Operand 17133 states and 28103 transitions. [2024-12-02 11:00:35,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2024-12-02 11:00:35,262 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:35,263 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:35,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 11:00:35,263 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:35,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1151824568, now seen corresponding path program 1 times [2024-12-02 11:00:35,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:35,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790506688] [2024-12-02 11:00:35,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:35,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:36,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:36,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:36,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790506688] [2024-12-02 11:00:36,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790506688] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:36,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:36,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:00:36,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656983373] [2024-12-02 11:00:36,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:36,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:00:36,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:36,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:00:36,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:36,506 INFO L87 Difference]: Start difference. First operand 17133 states and 28103 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:36,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:36,972 INFO L93 Difference]: Finished difference Result 34201 states and 56102 transitions. [2024-12-02 11:00:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:00:36,973 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 429 [2024-12-02 11:00:36,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:37,024 INFO L225 Difference]: With dead ends: 34201 [2024-12-02 11:00:37,024 INFO L226 Difference]: Without dead ends: 17095 [2024-12-02 11:00:37,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:37,046 INFO L435 NwaCegarLoop]: 713 mSDtfsCounter, 477 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:37,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 1162 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:00:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17095 states. [2024-12-02 11:00:37,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17095 to 14801. [2024-12-02 11:00:37,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14801 states, 14451 states have (on average 1.6554563698013978) internal successors, (23923), 14474 states have internal predecessors, (23923), 310 states have call successors, (310), 39 states have call predecessors, (310), 39 states have return successors, (310), 287 states have call predecessors, (310), 310 states have call successors, (310) [2024-12-02 11:00:37,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14801 states to 14801 states and 24543 transitions. [2024-12-02 11:00:37,526 INFO L78 Accepts]: Start accepts. Automaton has 14801 states and 24543 transitions. Word has length 429 [2024-12-02 11:00:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:37,527 INFO L471 AbstractCegarLoop]: Abstraction has 14801 states and 24543 transitions. [2024-12-02 11:00:37,527 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 14801 states and 24543 transitions. [2024-12-02 11:00:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2024-12-02 11:00:37,545 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:37,545 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:37,545 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 11:00:37,545 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:37,546 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:37,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1953237118, now seen corresponding path program 1 times [2024-12-02 11:00:37,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:37,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433919440] [2024-12-02 11:00:37,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:37,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:40,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 18 proven. 162 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:41,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433919440] [2024-12-02 11:00:41,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433919440] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:41,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365159019] [2024-12-02 11:00:41,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:41,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:41,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:41,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:41,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 11:00:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:41,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 11:00:41,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 3798 proven. 27 refuted. 0 times theorem prover too weak. 3495 trivial. 0 not checked. [2024-12-02 11:00:41,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:00:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 153 proven. 27 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365159019] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:00:42,360 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:00:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-12-02 11:00:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596160473] [2024-12-02 11:00:42,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:00:42,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 11:00:42,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:42,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 11:00:42,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-12-02 11:00:42,364 INFO L87 Difference]: Start difference. First operand 14801 states and 24543 transitions. Second operand has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 6 states have call successors, (136), 3 states have call predecessors, (136), 6 states have return successors, (137), 6 states have call predecessors, (137), 6 states have call successors, (137) [2024-12-02 11:00:43,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:43,303 INFO L93 Difference]: Finished difference Result 22753 states and 37540 transitions. [2024-12-02 11:00:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 11:00:43,304 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 6 states have call successors, (136), 3 states have call predecessors, (136), 6 states have return successors, (137), 6 states have call predecessors, (137), 6 states have call successors, (137) Word has length 430 [2024-12-02 11:00:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:43,326 INFO L225 Difference]: With dead ends: 22753 [2024-12-02 11:00:43,326 INFO L226 Difference]: Without dead ends: 7979 [2024-12-02 11:00:43,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 875 GetRequests, 852 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2024-12-02 11:00:43,341 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 924 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:43,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 1621 Invalid, 976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 11:00:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7979 states. [2024-12-02 11:00:43,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7979 to 7827. [2024-12-02 11:00:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7827 states, 7545 states have (on average 1.6343273691186215) internal successors, (12331), 7555 states have internal predecessors, (12331), 230 states have call successors, (230), 51 states have call predecessors, (230), 51 states have return successors, (230), 220 states have call predecessors, (230), 230 states have call successors, (230) [2024-12-02 11:00:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7827 states to 7827 states and 12791 transitions. [2024-12-02 11:00:43,612 INFO L78 Accepts]: Start accepts. Automaton has 7827 states and 12791 transitions. Word has length 430 [2024-12-02 11:00:43,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:43,613 INFO L471 AbstractCegarLoop]: Abstraction has 7827 states and 12791 transitions. [2024-12-02 11:00:43,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.8) internal successors, (222), 15 states have internal predecessors, (222), 6 states have call successors, (136), 3 states have call predecessors, (136), 6 states have return successors, (137), 6 states have call predecessors, (137), 6 states have call successors, (137) [2024-12-02 11:00:43,613 INFO L276 IsEmpty]: Start isEmpty. Operand 7827 states and 12791 transitions. [2024-12-02 11:00:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2024-12-02 11:00:43,623 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:43,623 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:43,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 11:00:43,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 11:00:43,823 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:43,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash 258825756, now seen corresponding path program 1 times [2024-12-02 11:00:43,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:43,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564899678] [2024-12-02 11:00:43,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:43,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564899678] [2024-12-02 11:00:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564899678] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:00:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170788834] [2024-12-02 11:00:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:44,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:00:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:44,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:00:44,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:44,304 INFO L87 Difference]: Start difference. First operand 7827 states and 12791 transitions. Second operand has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:44,727 INFO L93 Difference]: Finished difference Result 29301 states and 48148 transitions. [2024-12-02 11:00:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:00:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 431 [2024-12-02 11:00:44,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:44,751 INFO L225 Difference]: With dead ends: 29301 [2024-12-02 11:00:44,752 INFO L226 Difference]: Without dead ends: 21477 [2024-12-02 11:00:44,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 11:00:44,760 INFO L435 NwaCegarLoop]: 656 mSDtfsCounter, 601 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:44,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [601 Valid, 1561 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 11:00:44,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21477 states. [2024-12-02 11:00:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21477 to 15649. [2024-12-02 11:00:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15649 states, 15086 states have (on average 1.6276017499668567) internal successors, (24554), 15106 states have internal predecessors, (24554), 460 states have call successors, (460), 102 states have call predecessors, (460), 102 states have return successors, (460), 440 states have call predecessors, (460), 460 states have call successors, (460) [2024-12-02 11:00:45,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15649 states to 15649 states and 25474 transitions. [2024-12-02 11:00:45,080 INFO L78 Accepts]: Start accepts. Automaton has 15649 states and 25474 transitions. Word has length 431 [2024-12-02 11:00:45,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:45,081 INFO L471 AbstractCegarLoop]: Abstraction has 15649 states and 25474 transitions. [2024-12-02 11:00:45,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.25) internal successors, (129), 4 states have internal predecessors, (129), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:45,081 INFO L276 IsEmpty]: Start isEmpty. Operand 15649 states and 25474 transitions. [2024-12-02 11:00:45,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 11:00:45,091 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:45,091 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:45,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 11:00:45,091 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:45,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:45,091 INFO L85 PathProgramCache]: Analyzing trace with hash 828940149, now seen corresponding path program 1 times [2024-12-02 11:00:45,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:45,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478394056] [2024-12-02 11:00:45,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:45,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:00:45,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:45,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478394056] [2024-12-02 11:00:45,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478394056] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:00:45,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:00:45,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:00:45,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157947999] [2024-12-02 11:00:45,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:00:45,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:00:45,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:45,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:00:45,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:45,792 INFO L87 Difference]: Start difference. First operand 15649 states and 25474 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:46,189 INFO L93 Difference]: Finished difference Result 40293 states and 65706 transitions. [2024-12-02 11:00:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:00:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 432 [2024-12-02 11:00:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:46,227 INFO L225 Difference]: With dead ends: 40293 [2024-12-02 11:00:46,227 INFO L226 Difference]: Without dead ends: 24647 [2024-12-02 11:00:46,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:00:46,240 INFO L435 NwaCegarLoop]: 512 mSDtfsCounter, 456 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:46,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1180 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:00:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24647 states. [2024-12-02 11:00:46,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24647 to 17633. [2024-12-02 11:00:46,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17633 states, 17070 states have (on average 1.6333919156414762) internal successors, (27882), 17090 states have internal predecessors, (27882), 460 states have call successors, (460), 102 states have call predecessors, (460), 102 states have return successors, (460), 440 states have call predecessors, (460), 460 states have call successors, (460) [2024-12-02 11:00:46,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17633 states to 17633 states and 28802 transitions. [2024-12-02 11:00:46,710 INFO L78 Accepts]: Start accepts. Automaton has 17633 states and 28802 transitions. Word has length 432 [2024-12-02 11:00:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:46,711 INFO L471 AbstractCegarLoop]: Abstraction has 17633 states and 28802 transitions. [2024-12-02 11:00:46,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:00:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 17633 states and 28802 transitions. [2024-12-02 11:00:46,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 11:00:46,724 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:46,724 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:46,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 11:00:46,724 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:46,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:46,725 INFO L85 PathProgramCache]: Analyzing trace with hash 756553591, now seen corresponding path program 1 times [2024-12-02 11:00:46,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:46,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711632803] [2024-12-02 11:00:46,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:46,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:48,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:48,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:48,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711632803] [2024-12-02 11:00:48,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711632803] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:48,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98062736] [2024-12-02 11:00:48,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:48,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:48,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:48,206 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:48,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 11:00:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:48,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 11:00:48,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:49,124 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2080 proven. 150 refuted. 0 times theorem prover too weak. 5090 trivial. 0 not checked. [2024-12-02 11:00:49,124 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:00:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 30 proven. 150 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:49,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98062736] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:00:49,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:00:49,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-12-02 11:00:49,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995226420] [2024-12-02 11:00:49,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:00:49,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 11:00:49,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:49,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 11:00:49,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 11:00:49,520 INFO L87 Difference]: Start difference. First operand 17633 states and 28802 transitions. Second operand has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2024-12-02 11:00:50,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:50,242 INFO L93 Difference]: Finished difference Result 25563 states and 41218 transitions. [2024-12-02 11:00:50,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 11:00:50,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) Word has length 432 [2024-12-02 11:00:50,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:50,261 INFO L225 Difference]: With dead ends: 25563 [2024-12-02 11:00:50,261 INFO L226 Difference]: Without dead ends: 7933 [2024-12-02 11:00:50,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 876 GetRequests, 861 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:00:50,275 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 564 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 1060 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:50,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 1060 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 11:00:50,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7933 states. [2024-12-02 11:00:50,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7933 to 7881. [2024-12-02 11:00:50,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7881 states, 7366 states have (on average 1.5620418137388) internal successors, (11506), 7378 states have internal predecessors, (11506), 396 states have call successors, (396), 118 states have call predecessors, (396), 118 states have return successors, (396), 384 states have call predecessors, (396), 396 states have call successors, (396) [2024-12-02 11:00:50,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7881 states to 7881 states and 12298 transitions. [2024-12-02 11:00:50,689 INFO L78 Accepts]: Start accepts. Automaton has 7881 states and 12298 transitions. Word has length 432 [2024-12-02 11:00:50,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:50,689 INFO L471 AbstractCegarLoop]: Abstraction has 7881 states and 12298 transitions. [2024-12-02 11:00:50,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 24.375) internal successors, (195), 8 states have internal predecessors, (195), 3 states have call successors, (163), 2 states have call predecessors, (163), 4 states have return successors, (165), 3 states have call predecessors, (165), 3 states have call successors, (165) [2024-12-02 11:00:50,690 INFO L276 IsEmpty]: Start isEmpty. Operand 7881 states and 12298 transitions. [2024-12-02 11:00:50,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-12-02 11:00:50,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:50,697 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:50,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 11:00:50,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 11:00:50,898 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:50,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:50,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1878960023, now seen corresponding path program 1 times [2024-12-02 11:00:50,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:50,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142248121] [2024-12-02 11:00:50,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:50,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 36 proven. 144 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:53,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142248121] [2024-12-02 11:00:53,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142248121] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:53,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328247184] [2024-12-02 11:00:53,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:53,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:53,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:53,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:53,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 11:00:53,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:53,717 INFO L256 TraceCheckSpWp]: Trace formula consists of 1096 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 11:00:53,723 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:00:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 2388 proven. 144 refuted. 0 times theorem prover too weak. 4788 trivial. 0 not checked. [2024-12-02 11:00:54,252 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:00:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 36 proven. 144 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:54,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328247184] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:00:54,787 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:00:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 16 [2024-12-02 11:00:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215353777] [2024-12-02 11:00:54,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:00:54,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 11:00:54,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:00:54,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 11:00:54,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-12-02 11:00:54,790 INFO L87 Difference]: Start difference. First operand 7881 states and 12298 transitions. Second operand has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2024-12-02 11:00:57,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:00:57,272 INFO L93 Difference]: Finished difference Result 22091 states and 34117 transitions. [2024-12-02 11:00:57,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 11:00:57,272 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 432 [2024-12-02 11:00:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:00:57,293 INFO L225 Difference]: With dead ends: 22091 [2024-12-02 11:00:57,293 INFO L226 Difference]: Without dead ends: 14213 [2024-12-02 11:00:57,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 858 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=543, Invalid=1809, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 11:00:57,301 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 1371 mSDsluCounter, 2248 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 421 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 2097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 421 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 11:00:57,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1375 Valid, 3126 Invalid, 2097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [421 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 11:00:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14213 states. [2024-12-02 11:00:57,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14213 to 13800. [2024-12-02 11:00:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13800 states, 12722 states have (on average 1.530105329350731) internal successors, (19466), 12747 states have internal predecessors, (19466), 816 states have call successors, (816), 261 states have call predecessors, (816), 261 states have return successors, (816), 791 states have call predecessors, (816), 816 states have call successors, (816) [2024-12-02 11:00:57,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13800 states to 13800 states and 21098 transitions. [2024-12-02 11:00:57,763 INFO L78 Accepts]: Start accepts. Automaton has 13800 states and 21098 transitions. Word has length 432 [2024-12-02 11:00:57,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:00:57,764 INFO L471 AbstractCegarLoop]: Abstraction has 13800 states and 21098 transitions. [2024-12-02 11:00:57,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.5625) internal successors, (169), 16 states have internal predecessors, (169), 2 states have call successors, (109), 2 states have call predecessors, (109), 4 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2024-12-02 11:00:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13800 states and 21098 transitions. [2024-12-02 11:00:57,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-12-02 11:00:57,772 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:00:57,772 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:00:57,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 11:00:57,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 11:00:57,973 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:00:57,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:00:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1142310567, now seen corresponding path program 1 times [2024-12-02 11:00:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:00:57,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569538774] [2024-12-02 11:00:57,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:00:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,582 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 153 proven. 27 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:00:59,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:00:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569538774] [2024-12-02 11:00:59,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569538774] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:00:59,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469838823] [2024-12-02 11:00:59,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:00:59,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:00:59,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:00:59,584 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:00:59,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 11:00:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:00:59,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 11:00:59,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4598 proven. 210 refuted. 0 times theorem prover too weak. 2512 trivial. 0 not checked. [2024-12-02 11:01:01,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 225 proven. 132 refuted. 0 times theorem prover too weak. 6963 trivial. 0 not checked. [2024-12-02 11:01:02,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469838823] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:02,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:02,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 13] total 28 [2024-12-02 11:01:02,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505884121] [2024-12-02 11:01:02,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:02,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 11:01:02,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:02,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 11:01:02,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2024-12-02 11:01:02,047 INFO L87 Difference]: Start difference. First operand 13800 states and 21098 transitions. Second operand has 28 states, 27 states have (on average 11.925925925925926) internal successors, (322), 27 states have internal predecessors, (322), 8 states have call successors, (121), 4 states have call predecessors, (121), 8 states have return successors, (123), 7 states have call predecessors, (123), 8 states have call successors, (123) [2024-12-02 11:01:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:14,700 INFO L93 Difference]: Finished difference Result 75070 states and 113525 transitions. [2024-12-02 11:01:14,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2024-12-02 11:01:14,701 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 11.925925925925926) internal successors, (322), 27 states have internal predecessors, (322), 8 states have call successors, (121), 4 states have call predecessors, (121), 8 states have return successors, (123), 7 states have call predecessors, (123), 8 states have call successors, (123) Word has length 433 [2024-12-02 11:01:14,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:01:14,773 INFO L225 Difference]: With dead ends: 75070 [2024-12-02 11:01:14,773 INFO L226 Difference]: Without dead ends: 61348 [2024-12-02 11:01:14,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1014 GetRequests, 858 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9618 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=5132, Invalid=19674, Unknown=0, NotChecked=0, Total=24806 [2024-12-02 11:01:14,795 INFO L435 NwaCegarLoop]: 810 mSDtfsCounter, 7277 mSDsluCounter, 3552 mSDsCounter, 0 mSdLazyCounter, 3899 mSolverCounterSat, 2915 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7277 SdHoareTripleChecker+Valid, 4362 SdHoareTripleChecker+Invalid, 6814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2915 IncrementalHoareTripleChecker+Valid, 3899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 11:01:14,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7277 Valid, 4362 Invalid, 6814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2915 Valid, 3899 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 11:01:14,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61348 states. [2024-12-02 11:01:16,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61348 to 24631. [2024-12-02 11:01:16,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24631 states, 23343 states have (on average 1.580559482500107) internal successors, (36895), 23372 states have internal predecessors, (36895), 937 states have call successors, (937), 350 states have call predecessors, (937), 350 states have return successors, (937), 908 states have call predecessors, (937), 937 states have call successors, (937) [2024-12-02 11:01:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24631 states to 24631 states and 38769 transitions. [2024-12-02 11:01:16,092 INFO L78 Accepts]: Start accepts. Automaton has 24631 states and 38769 transitions. Word has length 433 [2024-12-02 11:01:16,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:01:16,092 INFO L471 AbstractCegarLoop]: Abstraction has 24631 states and 38769 transitions. [2024-12-02 11:01:16,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 11.925925925925926) internal successors, (322), 27 states have internal predecessors, (322), 8 states have call successors, (121), 4 states have call predecessors, (121), 8 states have return successors, (123), 7 states have call predecessors, (123), 8 states have call successors, (123) [2024-12-02 11:01:16,092 INFO L276 IsEmpty]: Start isEmpty. Operand 24631 states and 38769 transitions. [2024-12-02 11:01:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-12-02 11:01:16,102 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:01:16,102 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:16,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 11:01:16,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 11:01:16,303 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:01:16,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:16,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1706120857, now seen corresponding path program 1 times [2024-12-02 11:01:16,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:16,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989219374] [2024-12-02 11:01:16,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:16,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:01:23,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:23,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989219374] [2024-12-02 11:01:23,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989219374] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:01:23,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:01:23,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-12-02 11:01:23,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536921346] [2024-12-02 11:01:23,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:01:23,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 11:01:23,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:23,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 11:01:23,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-12-02 11:01:23,166 INFO L87 Difference]: Start difference. First operand 24631 states and 38769 transitions. Second operand has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:01:37,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:01:37,023 INFO L93 Difference]: Finished difference Result 103729 states and 163733 transitions. [2024-12-02 11:01:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 11:01:37,023 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 433 [2024-12-02 11:01:37,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:01:37,107 INFO L225 Difference]: With dead ends: 103729 [2024-12-02 11:01:37,108 INFO L226 Difference]: Without dead ends: 90827 [2024-12-02 11:01:37,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2024-12-02 11:01:37,127 INFO L435 NwaCegarLoop]: 536 mSDtfsCounter, 4217 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4217 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 3608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:01:37,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4217 Valid, 3328 Invalid, 3608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-12-02 11:01:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90827 states. [2024-12-02 11:01:39,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90827 to 44351. [2024-12-02 11:01:39,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44351 states, 42698 states have (on average 1.5933767389573281) internal successors, (68034), 42743 states have internal predecessors, (68034), 1177 states have call successors, (1177), 475 states have call predecessors, (1177), 475 states have return successors, (1177), 1132 states have call predecessors, (1177), 1177 states have call successors, (1177) [2024-12-02 11:01:40,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44351 states to 44351 states and 70388 transitions. [2024-12-02 11:01:40,064 INFO L78 Accepts]: Start accepts. Automaton has 44351 states and 70388 transitions. Word has length 433 [2024-12-02 11:01:40,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:01:40,064 INFO L471 AbstractCegarLoop]: Abstraction has 44351 states and 70388 transitions. [2024-12-02 11:01:40,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 10.076923076923077) internal successors, (131), 13 states have internal predecessors, (131), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:01:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 44351 states and 70388 transitions. [2024-12-02 11:01:40,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-12-02 11:01:40,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:01:40,085 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:01:40,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 11:01:40,085 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:01:40,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:01:40,086 INFO L85 PathProgramCache]: Analyzing trace with hash 665618405, now seen corresponding path program 1 times [2024-12-02 11:01:40,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:01:40,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481611968] [2024-12-02 11:01:40,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:40,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:01:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 72 proven. 108 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:01:43,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:01:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481611968] [2024-12-02 11:01:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481611968] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:01:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805960396] [2024-12-02 11:01:43,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:01:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:01:43,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:01:43,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:01:43,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 11:01:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:01:43,963 INFO L256 TraceCheckSpWp]: Trace formula consists of 1097 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 11:01:43,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:01:47,356 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4541 proven. 294 refuted. 0 times theorem prover too weak. 2485 trivial. 0 not checked. [2024-12-02 11:01:47,356 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:01:48,861 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 7140 trivial. 0 not checked. [2024-12-02 11:01:48,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805960396] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:01:48,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:01:48,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 10] total 40 [2024-12-02 11:01:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176406424] [2024-12-02 11:01:48,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:01:48,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 11:01:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:01:48,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 11:01:48,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 11:01:48,864 INFO L87 Difference]: Start difference. First operand 44351 states and 70388 transitions. Second operand has 40 states, 39 states have (on average 9.076923076923077) internal successors, (354), 39 states have internal predecessors, (354), 9 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 8 states have call predecessors, (165), 9 states have call successors, (165) [2024-12-02 11:01:57,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:01,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:07,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:08,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:12,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:16,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:18,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:22,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:25,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:29,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:33,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:38,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:43,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:47,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:53,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:55,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:02:59,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:00,852 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:04,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:09,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:13,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:20,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:23,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:27,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:32,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:35,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.72s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:41,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:45,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:49,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:55,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:03:59,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:02,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:07,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:11,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:16,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:20,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:24,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:28,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:33,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:37,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:41,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:45,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:48,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:49,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:51,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:55,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:04:58,797 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.62s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:02,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:25,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:27,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:34,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:42,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:45,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:49,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:51,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:54,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:05:56,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:01,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:06,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:09,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:14,106 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:18,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:20,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:29,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:35,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:06:37,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.99s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:09:01,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:09:05,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 11:09:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:09:36,192 INFO L93 Difference]: Finished difference Result 281571 states and 435472 transitions. [2024-12-02 11:09:36,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 453 states. [2024-12-02 11:09:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 39 states have (on average 9.076923076923077) internal successors, (354), 39 states have internal predecessors, (354), 9 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 8 states have call predecessors, (165), 9 states have call successors, (165) Word has length 433 [2024-12-02 11:09:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:09:36,486 INFO L225 Difference]: With dead ends: 281571 [2024-12-02 11:09:36,486 INFO L226 Difference]: Without dead ends: 237343 [2024-12-02 11:09:36,558 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 893 SyntacticMatches, 2 SemanticMatches, 489 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112994 ImplicationChecksByTransitivity, 161.7s TimeCoverageRelationStatistics Valid=28828, Invalid=211755, Unknown=7, NotChecked=0, Total=240590 [2024-12-02 11:09:36,558 INFO L435 NwaCegarLoop]: 638 mSDtfsCounter, 22874 mSDsluCounter, 7485 mSDsCounter, 0 mSdLazyCounter, 13157 mSolverCounterSat, 6509 mSolverCounterUnsat, 42 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 271.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22874 SdHoareTripleChecker+Valid, 8123 SdHoareTripleChecker+Invalid, 19708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 6509 IncrementalHoareTripleChecker+Valid, 13157 IncrementalHoareTripleChecker+Invalid, 42 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 274.9s IncrementalHoareTripleChecker+Time [2024-12-02 11:09:36,559 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22874 Valid, 8123 Invalid, 19708 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [6509 Valid, 13157 Invalid, 42 Unknown, 0 Unchecked, 274.9s Time] [2024-12-02 11:09:36,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237343 states. [2024-12-02 11:09:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237343 to 73583. [2024-12-02 11:09:41,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73583 states, 71859 states have (on average 1.6209938908139552) internal successors, (116483), 71908 states have internal predecessors, (116483), 1176 states have call successors, (1176), 547 states have call predecessors, (1176), 547 states have return successors, (1176), 1127 states have call predecessors, (1176), 1176 states have call successors, (1176) [2024-12-02 11:09:41,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73583 states to 73583 states and 118835 transitions. [2024-12-02 11:09:41,594 INFO L78 Accepts]: Start accepts. Automaton has 73583 states and 118835 transitions. Word has length 433 [2024-12-02 11:09:41,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:09:41,594 INFO L471 AbstractCegarLoop]: Abstraction has 73583 states and 118835 transitions. [2024-12-02 11:09:41,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 39 states have (on average 9.076923076923077) internal successors, (354), 39 states have internal predecessors, (354), 9 states have call successors, (164), 4 states have call predecessors, (164), 7 states have return successors, (165), 8 states have call predecessors, (165), 9 states have call successors, (165) [2024-12-02 11:09:41,595 INFO L276 IsEmpty]: Start isEmpty. Operand 73583 states and 118835 transitions. [2024-12-02 11:09:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-12-02 11:09:41,622 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:09:41,622 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:09:41,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 11:09:41,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 11:09:41,823 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:09:41,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:09:41,823 INFO L85 PathProgramCache]: Analyzing trace with hash -198568572, now seen corresponding path program 1 times [2024-12-02 11:09:41,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:09:41,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258685817] [2024-12-02 11:09:41,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:09:41,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:09:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:09:42,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:09:42,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:09:42,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258685817] [2024-12-02 11:09:42,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258685817] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:09:42,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:09:42,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 11:09:42,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31694599] [2024-12-02 11:09:42,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:09:42,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 11:09:42,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:09:42,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 11:09:42,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 11:09:42,280 INFO L87 Difference]: Start difference. First operand 73583 states and 118835 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:09:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:09:46,622 INFO L93 Difference]: Finished difference Result 149013 states and 240317 transitions. [2024-12-02 11:09:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 11:09:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 434 [2024-12-02 11:09:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:09:46,684 INFO L225 Difference]: With dead ends: 149013 [2024-12-02 11:09:46,684 INFO L226 Difference]: Without dead ends: 75497 [2024-12-02 11:09:46,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2024-12-02 11:09:46,707 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 881 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 11:09:46,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 2425 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 11:09:46,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75497 states. [2024-12-02 11:09:51,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75497 to 73583. [2024-12-02 11:09:51,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73583 states, 71859 states have (on average 1.6116422438386284) internal successors, (115811), 71908 states have internal predecessors, (115811), 1176 states have call successors, (1176), 547 states have call predecessors, (1176), 547 states have return successors, (1176), 1127 states have call predecessors, (1176), 1176 states have call successors, (1176) [2024-12-02 11:09:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73583 states to 73583 states and 118163 transitions. [2024-12-02 11:09:51,241 INFO L78 Accepts]: Start accepts. Automaton has 73583 states and 118163 transitions. Word has length 434 [2024-12-02 11:09:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:09:51,242 INFO L471 AbstractCegarLoop]: Abstraction has 73583 states and 118163 transitions. [2024-12-02 11:09:51,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:09:51,242 INFO L276 IsEmpty]: Start isEmpty. Operand 73583 states and 118163 transitions. [2024-12-02 11:09:51,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-12-02 11:09:51,278 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:09:51,279 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:09:51,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 11:09:51,279 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:09:51,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:09:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1246762281, now seen corresponding path program 1 times [2024-12-02 11:09:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:09:51,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669335646] [2024-12-02 11:09:51,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:09:51,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:09:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:09:51,835 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7320 trivial. 0 not checked. [2024-12-02 11:09:51,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:09:51,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669335646] [2024-12-02 11:09:51,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669335646] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 11:09:51,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 11:09:51,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 11:09:51,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504471083] [2024-12-02 11:09:51,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 11:09:51,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 11:09:51,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:09:51,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 11:09:51,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:09:51,837 INFO L87 Difference]: Start difference. First operand 73583 states and 118163 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:09:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 11:09:56,419 INFO L93 Difference]: Finished difference Result 161433 states and 258961 transitions. [2024-12-02 11:09:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 11:09:56,419 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) Word has length 434 [2024-12-02 11:09:56,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 11:09:56,496 INFO L225 Difference]: With dead ends: 161433 [2024-12-02 11:09:56,496 INFO L226 Difference]: Without dead ends: 87917 [2024-12-02 11:09:56,524 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 11:09:56,524 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 487 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 11:09:56,525 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 1260 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 11:09:56,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87917 states. [2024-12-02 11:10:00,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87917 to 78247. [2024-12-02 11:10:00,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78247 states, 76523 states have (on average 1.614821687597193) internal successors, (123571), 76572 states have internal predecessors, (123571), 1176 states have call successors, (1176), 547 states have call predecessors, (1176), 547 states have return successors, (1176), 1127 states have call predecessors, (1176), 1176 states have call successors, (1176) [2024-12-02 11:10:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78247 states to 78247 states and 125923 transitions. [2024-12-02 11:10:00,807 INFO L78 Accepts]: Start accepts. Automaton has 78247 states and 125923 transitions. Word has length 434 [2024-12-02 11:10:00,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 11:10:00,808 INFO L471 AbstractCegarLoop]: Abstraction has 78247 states and 125923 transitions. [2024-12-02 11:10:00,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (61), 1 states have call predecessors, (61), 1 states have return successors, (61), 1 states have call predecessors, (61), 1 states have call successors, (61) [2024-12-02 11:10:00,808 INFO L276 IsEmpty]: Start isEmpty. Operand 78247 states and 125923 transitions. [2024-12-02 11:10:00,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2024-12-02 11:10:00,835 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 11:10:00,835 INFO L218 NwaCegarLoop]: trace histogram [61, 61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 11:10:00,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 11:10:00,836 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 11:10:00,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 11:10:00,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1019618905, now seen corresponding path program 1 times [2024-12-02 11:10:00,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 11:10:00,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910435095] [2024-12-02 11:10:00,836 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:10:00,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 11:10:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:10:29,413 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 225 proven. 129 refuted. 0 times theorem prover too weak. 6966 trivial. 0 not checked. [2024-12-02 11:10:29,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 11:10:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910435095] [2024-12-02 11:10:29,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910435095] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 11:10:29,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357283689] [2024-12-02 11:10:29,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 11:10:29,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 11:10:29,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 11:10:29,415 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 11:10:29,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_402300d5-8ccb-4426-a508-062fb24ce561/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 11:10:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 11:10:29,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-12-02 11:10:29,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 11:10:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 4736 proven. 318 refuted. 0 times theorem prover too weak. 2266 trivial. 0 not checked. [2024-12-02 11:10:35,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 11:10:41,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7320 backedges. 360 proven. 171 refuted. 0 times theorem prover too weak. 6789 trivial. 0 not checked. [2024-12-02 11:10:41,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357283689] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 11:10:41,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 11:10:41,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29, 26] total 76 [2024-12-02 11:10:41,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158704213] [2024-12-02 11:10:41,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 11:10:41,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2024-12-02 11:10:41,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 11:10:41,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2024-12-02 11:10:41,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=492, Invalid=5208, Unknown=0, NotChecked=0, Total=5700 [2024-12-02 11:10:41,877 INFO L87 Difference]: Start difference. First operand 78247 states and 125923 transitions. Second operand has 76 states, 75 states have (on average 5.253333333333333) internal successors, (394), 73 states have internal predecessors, (394), 15 states have call successors, (183), 7 states have call predecessors, (183), 14 states have return successors, (183), 15 states have call predecessors, (183), 15 states have call successors, (183)