./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.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_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/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_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/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_13f44e90-34eb-4eee-8086-c1a364d574f9/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 7b2bcc7df245eb8532aef0f4bc8850b1854aeae0739980c240eae862b80a07ff --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:48:11,395 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:48:11,448 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:48:11,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:48:11,452 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:48:11,472 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:48:11,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:48:11,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:48:11,473 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:48:11,473 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:48:11,473 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:48:11,473 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:48:11,474 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:48:11,474 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:48:11,474 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:48:11,475 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:48:11,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:48:11,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:48:11,476 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:48:11,476 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:48:11,477 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:48:11,477 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_13f44e90-34eb-4eee-8086-c1a364d574f9/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 -> 7b2bcc7df245eb8532aef0f4bc8850b1854aeae0739980c240eae862b80a07ff [2024-12-02 10:48:11,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:48:11,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:48:11,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:48:11,700 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:48:11,700 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:48:11,701 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.i [2024-12-02 10:48:14,310 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/data/ca039b0a6/cd11acb8a88d416e8d0ff8398ec7ea39/FLAGafd5b062b [2024-12-02 10:48:14,576 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:48:14,577 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.i [2024-12-02 10:48:14,590 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/data/ca039b0a6/cd11acb8a88d416e8d0ff8398ec7ea39/FLAGafd5b062b [2024-12-02 10:48:14,891 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/data/ca039b0a6/cd11acb8a88d416e8d0ff8398ec7ea39 [2024-12-02 10:48:14,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:48:14,894 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:48:14,895 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:48:14,895 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:48:14,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:48:14,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:48:14" (1/1) ... [2024-12-02 10:48:14,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb03654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:14, skipping insertion in model container [2024-12-02 10:48:14,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:48:14" (1/1) ... [2024-12-02 10:48:14,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:48:15,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.i[916,929] [2024-12-02 10:48:15,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:48:15,276 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:48:15,286 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_13f44e90-34eb-4eee-8086-c1a364d574f9/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-65.i[916,929] [2024-12-02 10:48:15,398 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:48:15,414 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:48:15,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15 WrapperNode [2024-12-02 10:48:15,414 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:48:15,415 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:48:15,415 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:48:15,415 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:48:15,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,433 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,553 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 727 [2024-12-02 10:48:15,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:48:15,554 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:48:15,554 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:48:15,554 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:48:15,562 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,563 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,579 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,616 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 10:48:15,616 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,617 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,641 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,643 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,658 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:48:15,697 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:48:15,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:48:15,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:48:15,698 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (1/1) ... [2024-12-02 10:48:15,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:48:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:48:15,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:48:15,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:48:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:48:15,751 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 10:48:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 10:48:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:48:15,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:48:15,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:48:15,876 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:48:15,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:48:17,192 INFO L? ?]: Removed 105 outVars from TransFormulas that were not future-live. [2024-12-02 10:48:17,192 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:48:17,208 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:48:17,209 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:48:17,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:48:17 BoogieIcfgContainer [2024-12-02 10:48:17,209 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:48:17,211 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:48:17,212 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:48:17,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:48:17,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:48:14" (1/3) ... [2024-12-02 10:48:17,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a4752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:48:17, skipping insertion in model container [2024-12-02 10:48:17,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:48:15" (2/3) ... [2024-12-02 10:48:17,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a4752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:48:17, skipping insertion in model container [2024-12-02 10:48:17,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:48:17" (3/3) ... [2024-12-02 10:48:17,218 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-65.i [2024-12-02 10:48:17,229 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:48:17,232 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-65.i that has 2 procedures, 295 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:48:17,286 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:48:17,296 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;@31c85cc0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:48:17,296 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:48:17,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 295 states, 232 states have (on average 1.5603448275862069) internal successors, (362), 233 states have internal predecessors, (362), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 10:48:17,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-12-02 10:48:17,322 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:17,323 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:17,323 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:17,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:17,328 INFO L85 PathProgramCache]: Analyzing trace with hash -448355585, now seen corresponding path program 1 times [2024-12-02 10:48:17,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:17,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141720395] [2024-12-02 10:48:17,334 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:17,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:17,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 118 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2024-12-02 10:48:17,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:17,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141720395] [2024-12-02 10:48:17,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141720395] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:48:17,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868385375] [2024-12-02 10:48:17,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:48:17,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:48:17,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:48:17,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:48:18,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:18,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 1112 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 10:48:18,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:48:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 6962 trivial. 0 not checked. [2024-12-02 10:48:18,360 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:48:18,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868385375] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:18,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:48:18,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 10:48:18,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883439773] [2024-12-02 10:48:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:18,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 10:48:18,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:18,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 10:48:18,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 10:48:18,390 INFO L87 Difference]: Start difference. First operand has 295 states, 232 states have (on average 1.5603448275862069) internal successors, (362), 233 states have internal predecessors, (362), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) Second operand has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2024-12-02 10:48:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:18,441 INFO L93 Difference]: Finished difference Result 583 states and 1018 transitions. [2024-12-02 10:48:18,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 10:48:18,443 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) Word has length 437 [2024-12-02 10:48:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:18,451 INFO L225 Difference]: With dead ends: 583 [2024-12-02 10:48:18,451 INFO L226 Difference]: Without dead ends: 291 [2024-12-02 10:48:18,456 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 438 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 10:48:18,459 INFO L435 NwaCegarLoop]: 474 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, 474 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 10:48:18,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:48:18,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-12-02 10:48:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2024-12-02 10:48:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 229 states have (on average 1.5458515283842795) internal successors, (354), 229 states have internal predecessors, (354), 60 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2024-12-02 10:48:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 474 transitions. [2024-12-02 10:48:18,522 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 474 transitions. Word has length 437 [2024-12-02 10:48:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:18,523 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 474 transitions. [2024-12-02 10:48:18,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 71.0) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (60), 2 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 2 states have call successors, (60) [2024-12-02 10:48:18,523 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 474 transitions. [2024-12-02 10:48:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 438 [2024-12-02 10:48:18,533 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:18,533 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:18,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:48:18,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 10:48:18,734 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:18,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1844006739, now seen corresponding path program 1 times [2024-12-02 10:48:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:18,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655116453] [2024-12-02 10:48:18,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655116453] [2024-12-02 10:48:19,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655116453] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:19,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:19,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:19,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856996476] [2024-12-02 10:48:19,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:19,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:19,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:19,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:19,550 INFO L87 Difference]: Start difference. First operand 291 states and 474 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:19,977 INFO L93 Difference]: Finished difference Result 1048 states and 1714 transitions. [2024-12-02 10:48:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:19,977 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 437 [2024-12-02 10:48:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:19,983 INFO L225 Difference]: With dead ends: 1048 [2024-12-02 10:48:19,984 INFO L226 Difference]: Without dead ends: 760 [2024-12-02 10:48:19,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:48:19,985 INFO L435 NwaCegarLoop]: 742 mSDtfsCounter, 652 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:19,986 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1649 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:48:19,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2024-12-02 10:48:20,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 727. [2024-12-02 10:48:20,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 604 states have (on average 1.5811258278145695) internal successors, (955), 604 states have internal predecessors, (955), 120 states have call successors, (120), 2 states have call predecessors, (120), 2 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2024-12-02 10:48:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1195 transitions. [2024-12-02 10:48:20,050 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1195 transitions. Word has length 437 [2024-12-02 10:48:20,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:20,051 INFO L471 AbstractCegarLoop]: Abstraction has 727 states and 1195 transitions. [2024-12-02 10:48:20,052 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:20,052 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1195 transitions. [2024-12-02 10:48:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2024-12-02 10:48:20,058 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:20,058 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:20,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:48:20,058 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:20,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1250761421, now seen corresponding path program 1 times [2024-12-02 10:48:20,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:20,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972506718] [2024-12-02 10:48:20,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:20,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:20,509 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:20,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972506718] [2024-12-02 10:48:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972506718] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:20,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:20,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:20,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817615549] [2024-12-02 10:48:20,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:20,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:20,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:20,512 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:20,512 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:20,512 INFO L87 Difference]: Start difference. First operand 727 states and 1195 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:20,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:20,927 INFO L93 Difference]: Finished difference Result 2973 states and 4909 transitions. [2024-12-02 10:48:20,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:48:20,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 438 [2024-12-02 10:48:20,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:20,939 INFO L225 Difference]: With dead ends: 2973 [2024-12-02 10:48:20,939 INFO L226 Difference]: Without dead ends: 2249 [2024-12-02 10:48:20,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:48:20,942 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 1126 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:20,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 1588 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:48:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2024-12-02 10:48:21,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 2131. [2024-12-02 10:48:21,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2131 states, 1886 states have (on average 1.6261930010604453) internal successors, (3067), 1886 states have internal predecessors, (3067), 240 states have call successors, (240), 4 states have call predecessors, (240), 4 states have return successors, (240), 240 states have call predecessors, (240), 240 states have call successors, (240) [2024-12-02 10:48:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2131 states to 2131 states and 3547 transitions. [2024-12-02 10:48:21,064 INFO L78 Accepts]: Start accepts. Automaton has 2131 states and 3547 transitions. Word has length 438 [2024-12-02 10:48:21,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:21,065 INFO L471 AbstractCegarLoop]: Abstraction has 2131 states and 3547 transitions. [2024-12-02 10:48:21,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:21,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2131 states and 3547 transitions. [2024-12-02 10:48:21,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-12-02 10:48:21,072 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:21,072 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:21,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:48:21,072 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:21,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:21,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1039185688, now seen corresponding path program 1 times [2024-12-02 10:48:21,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:21,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096552295] [2024-12-02 10:48:21,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:21,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:21,303 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:21,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:21,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096552295] [2024-12-02 10:48:21,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096552295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:21,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:21,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:48:21,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821464315] [2024-12-02 10:48:21,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:21,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:48:21,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:21,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:48:21,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:48:21,306 INFO L87 Difference]: Start difference. First operand 2131 states and 3547 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:21,487 INFO L93 Difference]: Finished difference Result 6031 states and 10024 transitions. [2024-12-02 10:48:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:48:21,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2024-12-02 10:48:21,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:21,501 INFO L225 Difference]: With dead ends: 6031 [2024-12-02 10:48:21,502 INFO L226 Difference]: Without dead ends: 3903 [2024-12-02 10:48:21,505 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 10:48:21,506 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 444 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:21,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 901 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:48:21,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2024-12-02 10:48:21,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3895. [2024-12-02 10:48:21,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3895 states, 3406 states have (on average 1.5948326482677628) internal successors, (5432), 3406 states have internal predecessors, (5432), 480 states have call successors, (480), 8 states have call predecessors, (480), 8 states have return successors, (480), 480 states have call predecessors, (480), 480 states have call successors, (480) [2024-12-02 10:48:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3895 states to 3895 states and 6392 transitions. [2024-12-02 10:48:21,693 INFO L78 Accepts]: Start accepts. Automaton has 3895 states and 6392 transitions. Word has length 439 [2024-12-02 10:48:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:21,693 INFO L471 AbstractCegarLoop]: Abstraction has 3895 states and 6392 transitions. [2024-12-02 10:48:21,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:21,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3895 states and 6392 transitions. [2024-12-02 10:48:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-12-02 10:48:21,698 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:21,698 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:21,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:48:21,698 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:21,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:21,699 INFO L85 PathProgramCache]: Analyzing trace with hash -694918762, now seen corresponding path program 1 times [2024-12-02 10:48:21,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:21,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483408613] [2024-12-02 10:48:21,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:21,882 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:21,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:21,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483408613] [2024-12-02 10:48:21,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483408613] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:21,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:21,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:48:21,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724366178] [2024-12-02 10:48:21,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:21,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:48:21,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:21,884 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:48:21,884 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:48:21,884 INFO L87 Difference]: Start difference. First operand 3895 states and 6392 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:22,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:22,149 INFO L93 Difference]: Finished difference Result 10942 states and 17931 transitions. [2024-12-02 10:48:22,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:48:22,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2024-12-02 10:48:22,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:22,174 INFO L225 Difference]: With dead ends: 10942 [2024-12-02 10:48:22,174 INFO L226 Difference]: Without dead ends: 7050 [2024-12-02 10:48:22,181 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 10:48:22,181 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 454 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:22,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1136 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:48:22,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2024-12-02 10:48:22,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 7048. [2024-12-02 10:48:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7048 states, 6193 states have (on average 1.575326982076538) internal successors, (9756), 6193 states have internal predecessors, (9756), 840 states have call successors, (840), 14 states have call predecessors, (840), 14 states have return successors, (840), 840 states have call predecessors, (840), 840 states have call successors, (840) [2024-12-02 10:48:22,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7048 states to 7048 states and 11436 transitions. [2024-12-02 10:48:22,436 INFO L78 Accepts]: Start accepts. Automaton has 7048 states and 11436 transitions. Word has length 439 [2024-12-02 10:48:22,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:22,437 INFO L471 AbstractCegarLoop]: Abstraction has 7048 states and 11436 transitions. [2024-12-02 10:48:22,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:22,437 INFO L276 IsEmpty]: Start isEmpty. Operand 7048 states and 11436 transitions. [2024-12-02 10:48:22,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-12-02 10:48:22,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:22,442 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:22,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:48:22,442 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:22,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash -749311660, now seen corresponding path program 1 times [2024-12-02 10:48:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:22,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926350492] [2024-12-02 10:48:22,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:22,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:23,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926350492] [2024-12-02 10:48:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926350492] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 10:48:23,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691903976] [2024-12-02 10:48:23,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:23,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:48:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:23,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:48:23,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:48:23,087 INFO L87 Difference]: Start difference. First operand 7048 states and 11436 transitions. Second operand has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2024-12-02 10:48:24,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:24,338 INFO L93 Difference]: Finished difference Result 21042 states and 34131 transitions. [2024-12-02 10:48:24,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:48:24,339 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 439 [2024-12-02 10:48:24,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:24,385 INFO L225 Difference]: With dead ends: 21042 [2024-12-02 10:48:24,385 INFO L226 Difference]: Without dead ends: 13997 [2024-12-02 10:48:24,395 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:48:24,396 INFO L435 NwaCegarLoop]: 793 mSDtfsCounter, 1898 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 572 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 572 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:24,396 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 1470 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [572 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 10:48:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13997 states. [2024-12-02 10:48:24,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13997 to 9370. [2024-12-02 10:48:24,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 8515 states have (on average 1.58825601879037) internal successors, (13524), 8515 states have internal predecessors, (13524), 840 states have call successors, (840), 14 states have call predecessors, (840), 14 states have return successors, (840), 840 states have call predecessors, (840), 840 states have call successors, (840) [2024-12-02 10:48:24,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 15204 transitions. [2024-12-02 10:48:24,788 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 15204 transitions. Word has length 439 [2024-12-02 10:48:24,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:24,789 INFO L471 AbstractCegarLoop]: Abstraction has 9370 states and 15204 transitions. [2024-12-02 10:48:24,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.75) internal successors, (142), 8 states have internal predecessors, (142), 3 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2024-12-02 10:48:24,789 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 15204 transitions. [2024-12-02 10:48:24,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-12-02 10:48:24,794 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:24,794 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:24,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:48:24,794 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:24,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:24,795 INFO L85 PathProgramCache]: Analyzing trace with hash -2074167854, now seen corresponding path program 1 times [2024-12-02 10:48:24,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:24,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135742709] [2024-12-02 10:48:24,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:24,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:25,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135742709] [2024-12-02 10:48:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135742709] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:25,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:25,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:25,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017469602] [2024-12-02 10:48:25,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:25,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:25,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:25,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:25,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:25,299 INFO L87 Difference]: Start difference. First operand 9370 states and 15204 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:25,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:25,715 INFO L93 Difference]: Finished difference Result 23726 states and 38704 transitions. [2024-12-02 10:48:25,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:25,715 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 439 [2024-12-02 10:48:25,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:25,744 INFO L225 Difference]: With dead ends: 23726 [2024-12-02 10:48:25,744 INFO L226 Difference]: Without dead ends: 14359 [2024-12-02 10:48:25,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:25,754 INFO L435 NwaCegarLoop]: 463 mSDtfsCounter, 178 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:25,754 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 1347 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:48:25,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14359 states. [2024-12-02 10:48:26,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14359 to 14343. [2024-12-02 10:48:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14343 states, 13418 states have (on average 1.610076017290207) internal successors, (21604), 13432 states have internal predecessors, (21604), 896 states have call successors, (896), 28 states have call predecessors, (896), 28 states have return successors, (896), 882 states have call predecessors, (896), 896 states have call successors, (896) [2024-12-02 10:48:26,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14343 states to 14343 states and 23396 transitions. [2024-12-02 10:48:26,122 INFO L78 Accepts]: Start accepts. Automaton has 14343 states and 23396 transitions. Word has length 439 [2024-12-02 10:48:26,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:26,122 INFO L471 AbstractCegarLoop]: Abstraction has 14343 states and 23396 transitions. [2024-12-02 10:48:26,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 4 states have internal predecessors, (142), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:26,123 INFO L276 IsEmpty]: Start isEmpty. Operand 14343 states and 23396 transitions. [2024-12-02 10:48:26,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2024-12-02 10:48:26,129 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:26,129 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:26,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:48:26,129 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:26,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1125157793, now seen corresponding path program 1 times [2024-12-02 10:48:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121296968] [2024-12-02 10:48:26,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:26,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:26,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:26,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121296968] [2024-12-02 10:48:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121296968] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:26,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:26,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204824315] [2024-12-02 10:48:26,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:26,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:26,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:26,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:26,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:26,514 INFO L87 Difference]: Start difference. First operand 14343 states and 23396 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:27,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:27,304 INFO L93 Difference]: Finished difference Result 34361 states and 55916 transitions. [2024-12-02 10:48:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 440 [2024-12-02 10:48:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:27,360 INFO L225 Difference]: With dead ends: 34361 [2024-12-02 10:48:27,360 INFO L226 Difference]: Without dead ends: 20021 [2024-12-02 10:48:27,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 10:48:27,382 INFO L435 NwaCegarLoop]: 722 mSDtfsCounter, 629 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:27,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 1618 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:48:27,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20021 states. [2024-12-02 10:48:28,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20021 to 19341. [2024-12-02 10:48:28,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19341 states, 18223 states have (on average 1.6121933819897931) internal successors, (29379), 18239 states have internal predecessors, (29379), 1084 states have call successors, (1084), 33 states have call predecessors, (1084), 33 states have return successors, (1084), 1068 states have call predecessors, (1084), 1084 states have call successors, (1084) [2024-12-02 10:48:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19341 states to 19341 states and 31547 transitions. [2024-12-02 10:48:28,366 INFO L78 Accepts]: Start accepts. Automaton has 19341 states and 31547 transitions. Word has length 440 [2024-12-02 10:48:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:28,366 INFO L471 AbstractCegarLoop]: Abstraction has 19341 states and 31547 transitions. [2024-12-02 10:48:28,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 19341 states and 31547 transitions. [2024-12-02 10:48:28,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:28,382 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:28,382 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:28,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:48:28,383 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:28,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:28,383 INFO L85 PathProgramCache]: Analyzing trace with hash 448007969, now seen corresponding path program 1 times [2024-12-02 10:48:28,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:28,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821969807] [2024-12-02 10:48:28,384 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:28,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:29,225 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821969807] [2024-12-02 10:48:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821969807] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:29,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:29,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585654276] [2024-12-02 10:48:29,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:29,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:29,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:29,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:29,228 INFO L87 Difference]: Start difference. First operand 19341 states and 31547 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:30,037 INFO L93 Difference]: Finished difference Result 50555 states and 82532 transitions. [2024-12-02 10:48:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:30,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:30,125 INFO L225 Difference]: With dead ends: 50555 [2024-12-02 10:48:30,125 INFO L226 Difference]: Without dead ends: 31375 [2024-12-02 10:48:30,153 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 10:48:30,153 INFO L435 NwaCegarLoop]: 688 mSDtfsCounter, 637 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:30,153 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 1605 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:48:30,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31375 states. [2024-12-02 10:48:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31375 to 25451. [2024-12-02 10:48:31,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25451 states, 23937 states have (on average 1.6029577641308435) internal successors, (38370), 23959 states have internal predecessors, (38370), 1468 states have call successors, (1468), 45 states have call predecessors, (1468), 45 states have return successors, (1468), 1446 states have call predecessors, (1468), 1468 states have call successors, (1468) [2024-12-02 10:48:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25451 states to 25451 states and 41306 transitions. [2024-12-02 10:48:31,079 INFO L78 Accepts]: Start accepts. Automaton has 25451 states and 41306 transitions. Word has length 441 [2024-12-02 10:48:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:31,080 INFO L471 AbstractCegarLoop]: Abstraction has 25451 states and 41306 transitions. [2024-12-02 10:48:31,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 25451 states and 41306 transitions. [2024-12-02 10:48:31,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:31,085 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:31,085 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:31,085 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:48:31,085 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:31,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 78902623, now seen corresponding path program 1 times [2024-12-02 10:48:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:31,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308082975] [2024-12-02 10:48:31,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:31,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:31,697 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:31,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:31,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308082975] [2024-12-02 10:48:31,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308082975] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:31,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:31,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:31,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607655019] [2024-12-02 10:48:31,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:31,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:31,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:31,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:31,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:31,699 INFO L87 Difference]: Start difference. First operand 25451 states and 41306 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:33,017 INFO L93 Difference]: Finished difference Result 66821 states and 108686 transitions. [2024-12-02 10:48:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:33,099 INFO L225 Difference]: With dead ends: 66821 [2024-12-02 10:48:33,099 INFO L226 Difference]: Without dead ends: 49977 [2024-12-02 10:48:33,124 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 10:48:33,125 INFO L435 NwaCegarLoop]: 679 mSDtfsCounter, 873 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:33,125 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1798 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:48:33,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49977 states. [2024-12-02 10:48:34,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49977 to 49383. [2024-12-02 10:48:34,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49383 states, 46812 states have (on average 1.6084764590275997) internal successors, (75296), 46878 states have internal predecessors, (75296), 2480 states have call successors, (2480), 90 states have call predecessors, (2480), 90 states have return successors, (2480), 2414 states have call predecessors, (2480), 2480 states have call successors, (2480) [2024-12-02 10:48:34,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49383 states to 49383 states and 80256 transitions. [2024-12-02 10:48:34,584 INFO L78 Accepts]: Start accepts. Automaton has 49383 states and 80256 transitions. Word has length 441 [2024-12-02 10:48:34,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:34,584 INFO L471 AbstractCegarLoop]: Abstraction has 49383 states and 80256 transitions. [2024-12-02 10:48:34,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:34,584 INFO L276 IsEmpty]: Start isEmpty. Operand 49383 states and 80256 transitions. [2024-12-02 10:48:34,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:34,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:34,591 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:34,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:48:34,591 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:34,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:34,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1832139935, now seen corresponding path program 1 times [2024-12-02 10:48:34,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:34,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177012171] [2024-12-02 10:48:34,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:34,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:34,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:35,263 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:35,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:35,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177012171] [2024-12-02 10:48:35,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177012171] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:35,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:35,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:48:35,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856166436] [2024-12-02 10:48:35,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:35,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:48:35,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:35,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:48:35,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:48:35,265 INFO L87 Difference]: Start difference. First operand 49383 states and 80256 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:36,142 INFO L93 Difference]: Finished difference Result 91799 states and 149198 transitions. [2024-12-02 10:48:36,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:48:36,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:36,207 INFO L225 Difference]: With dead ends: 91799 [2024-12-02 10:48:36,207 INFO L226 Difference]: Without dead ends: 58685 [2024-12-02 10:48:36,229 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 10:48:36,229 INFO L435 NwaCegarLoop]: 456 mSDtfsCounter, 518 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:36,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 1291 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:48:36,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58685 states. [2024-12-02 10:48:37,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58685 to 55520. [2024-12-02 10:48:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55520 states, 52759 states have (on average 1.6054512026384125) internal successors, (84702), 52843 states have internal predecessors, (84702), 2651 states have call successors, (2651), 109 states have call predecessors, (2651), 109 states have return successors, (2651), 2567 states have call predecessors, (2651), 2651 states have call successors, (2651) [2024-12-02 10:48:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55520 states to 55520 states and 90004 transitions. [2024-12-02 10:48:37,561 INFO L78 Accepts]: Start accepts. Automaton has 55520 states and 90004 transitions. Word has length 441 [2024-12-02 10:48:37,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:37,561 INFO L471 AbstractCegarLoop]: Abstraction has 55520 states and 90004 transitions. [2024-12-02 10:48:37,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:37,562 INFO L276 IsEmpty]: Start isEmpty. Operand 55520 states and 90004 transitions. [2024-12-02 10:48:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:37,576 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:37,577 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:37,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 10:48:37,577 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:37,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2109738979, now seen corresponding path program 1 times [2024-12-02 10:48:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819637169] [2024-12-02 10:48:37,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:37,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:39,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:39,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819637169] [2024-12-02 10:48:39,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819637169] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:39,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:39,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:48:39,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943312519] [2024-12-02 10:48:39,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:39,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:48:39,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:39,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:48:39,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:48:39,190 INFO L87 Difference]: Start difference. First operand 55520 states and 90004 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:41,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:41,040 INFO L93 Difference]: Finished difference Result 178841 states and 290372 transitions. [2024-12-02 10:48:41,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:48:41,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:41,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:41,195 INFO L225 Difference]: With dead ends: 178841 [2024-12-02 10:48:41,195 INFO L226 Difference]: Without dead ends: 124234 [2024-12-02 10:48:41,235 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:48:41,235 INFO L435 NwaCegarLoop]: 903 mSDtfsCounter, 711 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:41,235 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2930 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:48:41,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124234 states. [2024-12-02 10:48:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124234 to 72032. [2024-12-02 10:48:43,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72032 states, 69271 states have (on average 1.6077146280550303) internal successors, (111368), 69355 states have internal predecessors, (111368), 2651 states have call successors, (2651), 109 states have call predecessors, (2651), 109 states have return successors, (2651), 2567 states have call predecessors, (2651), 2651 states have call successors, (2651) [2024-12-02 10:48:43,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72032 states to 72032 states and 116670 transitions. [2024-12-02 10:48:43,235 INFO L78 Accepts]: Start accepts. Automaton has 72032 states and 116670 transitions. Word has length 441 [2024-12-02 10:48:43,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:43,236 INFO L471 AbstractCegarLoop]: Abstraction has 72032 states and 116670 transitions. [2024-12-02 10:48:43,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 72032 states and 116670 transitions. [2024-12-02 10:48:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:43,243 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:43,243 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:43,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 10:48:43,243 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:43,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:43,244 INFO L85 PathProgramCache]: Analyzing trace with hash -451123867, now seen corresponding path program 1 times [2024-12-02 10:48:43,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:43,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428277846] [2024-12-02 10:48:43,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:43,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:43,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:43,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:43,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428277846] [2024-12-02 10:48:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428277846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:43,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:43,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:48:43,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440919677] [2024-12-02 10:48:43,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:43,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:48:43,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:43,451 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:48:43,451 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:48:43,451 INFO L87 Difference]: Start difference. First operand 72032 states and 116670 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:44,900 INFO L93 Difference]: Finished difference Result 178775 states and 289763 transitions. [2024-12-02 10:48:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:48:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:45,026 INFO L225 Difference]: With dead ends: 178775 [2024-12-02 10:48:45,027 INFO L226 Difference]: Without dead ends: 107320 [2024-12-02 10:48:45,065 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 10:48:45,066 INFO L435 NwaCegarLoop]: 505 mSDtfsCounter, 454 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:45,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 960 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:48:45,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107320 states. [2024-12-02 10:48:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107320 to 105866. [2024-12-02 10:48:47,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105866 states, 101589 states have (on average 1.5977615686737738) internal successors, (162315), 101721 states have internal predecessors, (162315), 4097 states have call successors, (4097), 179 states have call predecessors, (4097), 179 states have return successors, (4097), 3965 states have call predecessors, (4097), 4097 states have call successors, (4097) [2024-12-02 10:48:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105866 states to 105866 states and 170509 transitions. [2024-12-02 10:48:47,681 INFO L78 Accepts]: Start accepts. Automaton has 105866 states and 170509 transitions. Word has length 441 [2024-12-02 10:48:47,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:47,681 INFO L471 AbstractCegarLoop]: Abstraction has 105866 states and 170509 transitions. [2024-12-02 10:48:47,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:47,681 INFO L276 IsEmpty]: Start isEmpty. Operand 105866 states and 170509 transitions. [2024-12-02 10:48:47,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2024-12-02 10:48:47,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:47,697 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:47,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:48:47,697 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:47,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:47,698 INFO L85 PathProgramCache]: Analyzing trace with hash 85419685, now seen corresponding path program 1 times [2024-12-02 10:48:47,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:47,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621790690] [2024-12-02 10:48:47,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:48,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:49,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:49,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621790690] [2024-12-02 10:48:49,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621790690] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:49,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:48:49,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882121022] [2024-12-02 10:48:49,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:49,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:48:49,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:49,570 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:48:49,570 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:48:49,570 INFO L87 Difference]: Start difference. First operand 105866 states and 170509 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:51,938 INFO L93 Difference]: Finished difference Result 307158 states and 495891 transitions. [2024-12-02 10:48:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:48:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 441 [2024-12-02 10:48:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:52,322 INFO L225 Difference]: With dead ends: 307158 [2024-12-02 10:48:52,322 INFO L226 Difference]: Without dead ends: 203997 [2024-12-02 10:48:52,373 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:48:52,374 INFO L435 NwaCegarLoop]: 770 mSDtfsCounter, 845 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 2572 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:52,374 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 2572 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:48:52,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203997 states. [2024-12-02 10:48:54,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203997 to 155731. [2024-12-02 10:48:54,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155731 states, 151187 states have (on average 1.5978820930370998) internal successors, (241579), 151367 states have internal predecessors, (241579), 4300 states have call successors, (4300), 243 states have call predecessors, (4300), 243 states have return successors, (4300), 4120 states have call predecessors, (4300), 4300 states have call successors, (4300) [2024-12-02 10:48:55,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155731 states to 155731 states and 250179 transitions. [2024-12-02 10:48:55,204 INFO L78 Accepts]: Start accepts. Automaton has 155731 states and 250179 transitions. Word has length 441 [2024-12-02 10:48:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:48:55,205 INFO L471 AbstractCegarLoop]: Abstraction has 155731 states and 250179 transitions. [2024-12-02 10:48:55,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 155731 states and 250179 transitions. [2024-12-02 10:48:55,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2024-12-02 10:48:55,226 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:48:55,226 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:48:55,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 10:48:55,226 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:48:55,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:48:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2091203268, now seen corresponding path program 1 times [2024-12-02 10:48:55,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:48:55,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974578642] [2024-12-02 10:48:55,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:48:55,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:48:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:48:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7080 trivial. 0 not checked. [2024-12-02 10:48:56,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:48:56,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974578642] [2024-12-02 10:48:56,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974578642] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:48:56,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:48:56,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:48:56,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502683601] [2024-12-02 10:48:56,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:48:56,147 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:48:56,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:48:56,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:48:56,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:48:56,148 INFO L87 Difference]: Start difference. First operand 155731 states and 250179 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:48:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:48:57,851 INFO L93 Difference]: Finished difference Result 311077 states and 499767 transitions. [2024-12-02 10:48:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:48:57,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) Word has length 442 [2024-12-02 10:48:57,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:48:58,053 INFO L225 Difference]: With dead ends: 311077 [2024-12-02 10:48:58,053 INFO L226 Difference]: Without dead ends: 155731 [2024-12-02 10:48:58,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:48:58,173 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 0 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:48:58,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 929 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:48:58,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155731 states. [2024-12-02 10:49:01,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155731 to 155731. [2024-12-02 10:49:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155731 states, 151187 states have (on average 1.5944955584805571) internal successors, (241067), 151367 states have internal predecessors, (241067), 4300 states have call successors, (4300), 243 states have call predecessors, (4300), 243 states have return successors, (4300), 4120 states have call predecessors, (4300), 4300 states have call successors, (4300) [2024-12-02 10:49:01,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155731 states to 155731 states and 249667 transitions. [2024-12-02 10:49:01,905 INFO L78 Accepts]: Start accepts. Automaton has 155731 states and 249667 transitions. Word has length 442 [2024-12-02 10:49:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:01,906 INFO L471 AbstractCegarLoop]: Abstraction has 155731 states and 249667 transitions. [2024-12-02 10:49:01,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 1 states have call successors, (60), 1 states have call predecessors, (60), 1 states have return successors, (60), 1 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:49:01,906 INFO L276 IsEmpty]: Start isEmpty. Operand 155731 states and 249667 transitions. [2024-12-02 10:49:01,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-12-02 10:49:01,933 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:01,934 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:49:01,934 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:01,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash -394724746, now seen corresponding path program 1 times [2024-12-02 10:49:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659954356] [2024-12-02 10:49:01,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:04,391 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 24 proven. 153 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:04,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659954356] [2024-12-02 10:49:04,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659954356] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:04,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587669058] [2024-12-02 10:49:04,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:04,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:04,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:04,394 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:04,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:49:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:04,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 1119 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 10:49:04,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:05,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1707 proven. 153 refuted. 0 times theorem prover too weak. 5220 trivial. 0 not checked. [2024-12-02 10:49:05,120 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:49:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 24 proven. 153 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:05,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587669058] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:49:05,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:49:05,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 16 [2024-12-02 10:49:05,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637175968] [2024-12-02 10:49:05,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:49:05,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 10:49:05,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:05,464 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 10:49:05,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2024-12-02 10:49:05,464 INFO L87 Difference]: Start difference. First operand 155731 states and 249667 transitions. Second operand has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-12-02 10:49:09,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:49:09,420 INFO L93 Difference]: Finished difference Result 485010 states and 780113 transitions. [2024-12-02 10:49:09,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 10:49:09,420 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) Word has length 443 [2024-12-02 10:49:09,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:49:09,833 INFO L225 Difference]: With dead ends: 485010 [2024-12-02 10:49:09,833 INFO L226 Difference]: Without dead ends: 331804 [2024-12-02 10:49:09,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=268, Invalid=662, Unknown=0, NotChecked=0, Total=930 [2024-12-02 10:49:09,981 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 1888 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1912 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:49:09,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1912 Valid, 2688 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:49:10,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331804 states. [2024-12-02 10:49:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331804 to 251916. [2024-12-02 10:49:15,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251916 states, 246730 states have (on average 1.601179426903903) internal successors, (395059), 246990 states have internal predecessors, (395059), 4700 states have call successors, (4700), 485 states have call predecessors, (4700), 485 states have return successors, (4700), 4440 states have call predecessors, (4700), 4700 states have call successors, (4700) [2024-12-02 10:49:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251916 states to 251916 states and 404459 transitions. [2024-12-02 10:49:15,478 INFO L78 Accepts]: Start accepts. Automaton has 251916 states and 404459 transitions. Word has length 443 [2024-12-02 10:49:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:15,479 INFO L471 AbstractCegarLoop]: Abstraction has 251916 states and 404459 transitions. [2024-12-02 10:49:15,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.6875) internal successors, (171), 16 states have internal predecessors, (171), 2 states have call successors, (111), 2 states have call predecessors, (111), 4 states have return successors, (112), 2 states have call predecessors, (112), 2 states have call successors, (112) [2024-12-02 10:49:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 251916 states and 404459 transitions. [2024-12-02 10:49:15,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-12-02 10:49:15,506 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:15,506 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:15,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:49:15,706 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 10:49:15,706 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:15,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:15,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1330690894, now seen corresponding path program 1 times [2024-12-02 10:49:15,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:15,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010616018] [2024-12-02 10:49:15,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:15,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:18,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010616018] [2024-12-02 10:49:18,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010616018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:18,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669254510] [2024-12-02 10:49:18,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:18,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:18,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:18,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:18,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:49:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:18,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 1121 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:49:18,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:18,877 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:49:18,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669254510] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:49:18,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:49:18,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 10 [2024-12-02 10:49:18,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146607757] [2024-12-02 10:49:18,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:49:18,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:49:18,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:18,878 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:49:18,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:49:18,879 INFO L87 Difference]: Start difference. First operand 251916 states and 404459 transitions. Second operand has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:49:20,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:49:20,555 INFO L93 Difference]: Finished difference Result 339536 states and 544461 transitions. [2024-12-02 10:49:20,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 10:49:20,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) Word has length 443 [2024-12-02 10:49:20,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:49:20,677 INFO L225 Difference]: With dead ends: 339536 [2024-12-02 10:49:20,677 INFO L226 Difference]: Without dead ends: 93927 [2024-12-02 10:49:20,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:49:20,810 INFO L435 NwaCegarLoop]: 395 mSDtfsCounter, 675 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:49:20,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1066 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:49:20,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93927 states. [2024-12-02 10:49:22,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93927 to 93525. [2024-12-02 10:49:22,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93525 states, 90862 states have (on average 1.5922277739869253) internal successors, (144673), 90954 states have internal predecessors, (144673), 2420 states have call successors, (2420), 242 states have call predecessors, (2420), 242 states have return successors, (2420), 2328 states have call predecessors, (2420), 2420 states have call successors, (2420) [2024-12-02 10:49:22,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93525 states to 93525 states and 149513 transitions. [2024-12-02 10:49:22,632 INFO L78 Accepts]: Start accepts. Automaton has 93525 states and 149513 transitions. Word has length 443 [2024-12-02 10:49:22,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:22,632 INFO L471 AbstractCegarLoop]: Abstraction has 93525 states and 149513 transitions. [2024-12-02 10:49:22,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.833333333333332) internal successors, (149), 6 states have internal predecessors, (149), 1 states have call successors, (60), 1 states have call predecessors, (60), 2 states have return successors, (60), 2 states have call predecessors, (60), 1 states have call successors, (60) [2024-12-02 10:49:22,632 INFO L276 IsEmpty]: Start isEmpty. Operand 93525 states and 149513 transitions. [2024-12-02 10:49:22,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2024-12-02 10:49:22,639 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:22,639 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:22,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:49:22,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 10:49:22,840 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:22,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:22,840 INFO L85 PathProgramCache]: Analyzing trace with hash 447733716, now seen corresponding path program 1 times [2024-12-02 10:49:22,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:22,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867809376] [2024-12-02 10:49:22,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:22,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:24,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867809376] [2024-12-02 10:49:24,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867809376] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:24,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46023788] [2024-12-02 10:49:24,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:24,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:24,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:24,391 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:24,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:49:24,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:24,687 INFO L256 TraceCheckSpWp]: Trace formula consists of 1122 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:49:24,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:25,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3417 proven. 108 refuted. 0 times theorem prover too weak. 3555 trivial. 0 not checked. [2024-12-02 10:49:25,463 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:49:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 69 proven. 108 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:25,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46023788] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:49:25,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:49:25,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2024-12-02 10:49:25,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260579393] [2024-12-02 10:49:25,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:49:25,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 10:49:25,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:25,971 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 10:49:25,971 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-12-02 10:49:25,971 INFO L87 Difference]: Start difference. First operand 93525 states and 149513 transitions. Second operand has 19 states, 19 states have (on average 16.789473684210527) internal successors, (319), 19 states have internal predecessors, (319), 6 states have call successors, (180), 3 states have call predecessors, (180), 6 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) [2024-12-02 10:49:31,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:49:31,575 INFO L93 Difference]: Finished difference Result 226920 states and 359607 transitions. [2024-12-02 10:49:31,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 10:49:31,576 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 16.789473684210527) internal successors, (319), 19 states have internal predecessors, (319), 6 states have call successors, (180), 3 states have call predecessors, (180), 6 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) Word has length 443 [2024-12-02 10:49:31,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:49:31,743 INFO L225 Difference]: With dead ends: 226920 [2024-12-02 10:49:31,743 INFO L226 Difference]: Without dead ends: 135432 [2024-12-02 10:49:31,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 934 GetRequests, 878 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=559, Invalid=2747, Unknown=0, NotChecked=0, Total=3306 [2024-12-02 10:49:31,820 INFO L435 NwaCegarLoop]: 671 mSDtfsCounter, 4609 mSDsluCounter, 4403 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 1216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4632 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 3469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1216 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 10:49:31,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4632 Valid, 5074 Invalid, 3469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1216 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 10:49:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135432 states. [2024-12-02 10:49:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135432 to 130932. [2024-12-02 10:49:35,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130932 states, 124417 states have (on average 1.5659194483069034) internal successors, (194827), 124673 states have internal predecessors, (194827), 5752 states have call successors, (5752), 762 states have call predecessors, (5752), 762 states have return successors, (5752), 5496 states have call predecessors, (5752), 5752 states have call successors, (5752) [2024-12-02 10:49:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130932 states to 130932 states and 206331 transitions. [2024-12-02 10:49:35,662 INFO L78 Accepts]: Start accepts. Automaton has 130932 states and 206331 transitions. Word has length 443 [2024-12-02 10:49:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:35,663 INFO L471 AbstractCegarLoop]: Abstraction has 130932 states and 206331 transitions. [2024-12-02 10:49:35,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 16.789473684210527) internal successors, (319), 19 states have internal predecessors, (319), 6 states have call successors, (180), 3 states have call predecessors, (180), 6 states have return successors, (180), 6 states have call predecessors, (180), 6 states have call successors, (180) [2024-12-02 10:49:35,663 INFO L276 IsEmpty]: Start isEmpty. Operand 130932 states and 206331 transitions. [2024-12-02 10:49:35,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-12-02 10:49:35,679 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:35,680 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:35,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 10:49:35,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 10:49:35,880 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:35,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:35,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1608888997, now seen corresponding path program 1 times [2024-12-02 10:49:35,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:35,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900353257] [2024-12-02 10:49:35,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:35,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:38,000 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:38,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900353257] [2024-12-02 10:49:38,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900353257] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:38,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769684468] [2024-12-02 10:49:38,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:38,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:38,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:38,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:49:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:38,339 INFO L256 TraceCheckSpWp]: Trace formula consists of 1128 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:49:38,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:38,872 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1877 proven. 150 refuted. 0 times theorem prover too weak. 5053 trivial. 0 not checked. [2024-12-02 10:49:38,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:49:39,524 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:39,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769684468] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:49:39,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:49:39,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-12-02 10:49:39,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723350021] [2024-12-02 10:49:39,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:49:39,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:49:39,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:39,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:49:39,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-12-02 10:49:39,526 INFO L87 Difference]: Start difference. First operand 130932 states and 206331 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) [2024-12-02 10:49:45,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:49:45,824 INFO L93 Difference]: Finished difference Result 268660 states and 421470 transitions. [2024-12-02 10:49:45,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 10:49:45,825 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) Word has length 445 [2024-12-02 10:49:45,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:49:46,053 INFO L225 Difference]: With dead ends: 268660 [2024-12-02 10:49:46,053 INFO L226 Difference]: Without dead ends: 146516 [2024-12-02 10:49:46,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 883 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=751, Unknown=0, NotChecked=0, Total=992 [2024-12-02 10:49:46,161 INFO L435 NwaCegarLoop]: 363 mSDtfsCounter, 1174 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 1971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:49:46,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 3493 Invalid, 1971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 10:49:46,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146516 states. [2024-12-02 10:49:50,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146516 to 141932. [2024-12-02 10:49:50,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141932 states, 134424 states have (on average 1.5590221984169494) internal successors, (209570), 134728 states have internal predecessors, (209570), 6488 states have call successors, (6488), 1019 states have call predecessors, (6488), 1019 states have return successors, (6488), 6184 states have call predecessors, (6488), 6488 states have call successors, (6488) [2024-12-02 10:49:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141932 states to 141932 states and 222546 transitions. [2024-12-02 10:49:50,763 INFO L78 Accepts]: Start accepts. Automaton has 141932 states and 222546 transitions. Word has length 445 [2024-12-02 10:49:50,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:49:50,764 INFO L471 AbstractCegarLoop]: Abstraction has 141932 states and 222546 transitions. [2024-12-02 10:49:50,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 17 states have internal predecessors, (246), 3 states have call successors, (160), 2 states have call predecessors, (160), 4 states have return successors, (161), 3 states have call predecessors, (161), 3 states have call successors, (161) [2024-12-02 10:49:50,764 INFO L276 IsEmpty]: Start isEmpty. Operand 141932 states and 222546 transitions. [2024-12-02 10:49:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-12-02 10:49:50,773 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:49:50,774 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:49:50,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:49:50,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:50,974 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:49:50,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:49:50,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2120383593, now seen corresponding path program 1 times [2024-12-02 10:49:50,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:49:50,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448828130] [2024-12-02 10:49:50,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:50,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:49:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:52,410 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:49:52,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:49:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448828130] [2024-12-02 10:49:52,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448828130] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:49:52,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192506363] [2024-12-02 10:49:52,411 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:49:52,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:49:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:49:52,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:49:52,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:49:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:49:52,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-12-02 10:49:52,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:49:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1760 proven. 300 refuted. 0 times theorem prover too weak. 5020 trivial. 0 not checked. [2024-12-02 10:49:53,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:49:54,407 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 48 proven. 303 refuted. 0 times theorem prover too weak. 6729 trivial. 0 not checked. [2024-12-02 10:49:54,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192506363] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:49:54,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:49:54,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2024-12-02 10:49:54,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731038645] [2024-12-02 10:49:54,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:49:54,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 10:49:54,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:49:54,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 10:49:54,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:49:54,409 INFO L87 Difference]: Start difference. First operand 141932 states and 222546 transitions. Second operand has 22 states, 22 states have (on average 15.636363636363637) internal successors, (344), 22 states have internal predecessors, (344), 7 states have call successors, (171), 3 states have call predecessors, (171), 6 states have return successors, (172), 7 states have call predecessors, (172), 7 states have call successors, (172) [2024-12-02 10:50:04,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:04,965 INFO L93 Difference]: Finished difference Result 304412 states and 470430 transitions. [2024-12-02 10:50:04,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-12-02 10:50:04,966 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 15.636363636363637) internal successors, (344), 22 states have internal predecessors, (344), 7 states have call successors, (171), 3 states have call predecessors, (171), 6 states have return successors, (172), 7 states have call predecessors, (172), 7 states have call successors, (172) Word has length 445 [2024-12-02 10:50:04,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:05,180 INFO L225 Difference]: With dead ends: 304412 [2024-12-02 10:50:05,180 INFO L226 Difference]: Without dead ends: 163936 [2024-12-02 10:50:05,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 990 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3494 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2331, Invalid=8381, Unknown=0, NotChecked=0, Total=10712 [2024-12-02 10:50:05,267 INFO L435 NwaCegarLoop]: 746 mSDtfsCounter, 7761 mSDsluCounter, 5281 mSDsCounter, 0 mSdLazyCounter, 4066 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7761 SdHoareTripleChecker+Valid, 6027 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 4066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:05,268 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7761 Valid, 6027 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 4066 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-12-02 10:50:05,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163936 states. [2024-12-02 10:50:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163936 to 130918. [2024-12-02 10:50:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130918 states, 121929 states have (on average 1.5078201248267433) internal successors, (183847), 122243 states have internal predecessors, (183847), 7516 states have call successors, (7516), 1472 states have call predecessors, (7516), 1472 states have return successors, (7516), 7202 states have call predecessors, (7516), 7516 states have call successors, (7516) [2024-12-02 10:50:11,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130918 states to 130918 states and 198879 transitions. [2024-12-02 10:50:11,201 INFO L78 Accepts]: Start accepts. Automaton has 130918 states and 198879 transitions. Word has length 445 [2024-12-02 10:50:11,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:50:11,202 INFO L471 AbstractCegarLoop]: Abstraction has 130918 states and 198879 transitions. [2024-12-02 10:50:11,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 15.636363636363637) internal successors, (344), 22 states have internal predecessors, (344), 7 states have call successors, (171), 3 states have call predecessors, (171), 6 states have return successors, (172), 7 states have call predecessors, (172), 7 states have call successors, (172) [2024-12-02 10:50:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 130918 states and 198879 transitions. [2024-12-02 10:50:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2024-12-02 10:50:11,212 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:50:11,212 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:50:11,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:50:11,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:11,413 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:50:11,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:50:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash 369116630, now seen corresponding path program 1 times [2024-12-02 10:50:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:50:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537759774] [2024-12-02 10:50:11,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:50:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 36 proven. 141 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:50:14,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:50:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537759774] [2024-12-02 10:50:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537759774] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:50:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919435952] [2024-12-02 10:50:14,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:50:14,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:50:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:50:14,433 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:50:14,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 10:50:14,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:50:14,767 INFO L256 TraceCheckSpWp]: Trace formula consists of 1123 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 10:50:14,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:50:15,267 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 1877 proven. 150 refuted. 0 times theorem prover too weak. 5053 trivial. 0 not checked. [2024-12-02 10:50:15,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:50:15,984 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 27 proven. 150 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:50:15,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919435952] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:50:15,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:50:15,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 21 [2024-12-02 10:50:15,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528368515] [2024-12-02 10:50:15,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:50:15,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 10:50:15,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:50:15,987 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 10:50:15,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:50:15,988 INFO L87 Difference]: Start difference. First operand 130918 states and 198879 transitions. Second operand has 21 states, 21 states have (on average 17.714285714285715) internal successors, (372), 21 states have internal predecessors, (372), 5 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (171), 5 states have call predecessors, (171), 5 states have call successors, (171) [2024-12-02 10:50:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:50:44,257 INFO L93 Difference]: Finished difference Result 820444 states and 1248506 transitions. [2024-12-02 10:50:44,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2024-12-02 10:50:44,257 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 17.714285714285715) internal successors, (372), 21 states have internal predecessors, (372), 5 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (171), 5 states have call predecessors, (171), 5 states have call successors, (171) Word has length 445 [2024-12-02 10:50:44,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:50:45,787 INFO L225 Difference]: With dead ends: 820444 [2024-12-02 10:50:45,787 INFO L226 Difference]: Without dead ends: 691154 [2024-12-02 10:50:45,942 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1063 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11797 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=3548, Invalid=25182, Unknown=0, NotChecked=0, Total=28730 [2024-12-02 10:50:45,943 INFO L435 NwaCegarLoop]: 598 mSDtfsCounter, 23460 mSDsluCounter, 7275 mSDsCounter, 0 mSdLazyCounter, 4374 mSolverCounterSat, 1801 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23470 SdHoareTripleChecker+Valid, 7873 SdHoareTripleChecker+Invalid, 6175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1801 IncrementalHoareTripleChecker+Valid, 4374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-12-02 10:50:45,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23470 Valid, 7873 Invalid, 6175 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1801 Valid, 4374 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-12-02 10:50:46,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691154 states. [2024-12-02 10:51:02,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691154 to 377556. [2024-12-02 10:51:03,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377556 states, 355591 states have (on average 1.5038372737217758) internal successors, (534751), 356573 states have internal predecessors, (534751), 17906 states have call successors, (17906), 4058 states have call predecessors, (17906), 4058 states have return successors, (17906), 16924 states have call predecessors, (17906), 17906 states have call successors, (17906) [2024-12-02 10:51:04,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377556 states to 377556 states and 570563 transitions. [2024-12-02 10:51:04,208 INFO L78 Accepts]: Start accepts. Automaton has 377556 states and 570563 transitions. Word has length 445 [2024-12-02 10:51:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:04,209 INFO L471 AbstractCegarLoop]: Abstraction has 377556 states and 570563 transitions. [2024-12-02 10:51:04,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 17.714285714285715) internal successors, (372), 21 states have internal predecessors, (372), 5 states have call successors, (170), 2 states have call predecessors, (170), 4 states have return successors, (171), 5 states have call predecessors, (171), 5 states have call successors, (171) [2024-12-02 10:51:04,209 INFO L276 IsEmpty]: Start isEmpty. Operand 377556 states and 570563 transitions. [2024-12-02 10:51:04,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-12-02 10:51:04,223 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:04,224 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:04,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 10:51:04,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:04,424 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:04,425 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1214534076, now seen corresponding path program 1 times [2024-12-02 10:51:04,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:04,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597548988] [2024-12-02 10:51:04,425 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:04,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:51:06,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597548988] [2024-12-02 10:51:06,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597548988] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:06,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737145312] [2024-12-02 10:51:06,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:06,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:06,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:06,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:06,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 10:51:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:06,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 10:51:06,546 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:08,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3122 proven. 402 refuted. 0 times theorem prover too weak. 3556 trivial. 0 not checked. [2024-12-02 10:51:08,438 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:08,943 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 51 proven. 126 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:51:08,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737145312] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:51:08,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:51:08,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 12, 6] total 18 [2024-12-02 10:51:08,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740390795] [2024-12-02 10:51:08,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:08,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 10:51:08,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:08,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 10:51:08,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-12-02 10:51:08,945 INFO L87 Difference]: Start difference. First operand 377556 states and 570563 transitions. Second operand has 18 states, 18 states have (on average 21.88888888888889) internal successors, (394), 17 states have internal predecessors, (394), 6 states have call successors, (156), 4 states have call predecessors, (156), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2024-12-02 10:51:27,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:27,531 INFO L93 Difference]: Finished difference Result 756486 states and 1136580 transitions. [2024-12-02 10:51:27,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-12-02 10:51:27,532 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 21.88888888888889) internal successors, (394), 17 states have internal predecessors, (394), 6 states have call successors, (156), 4 states have call predecessors, (156), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) Word has length 446 [2024-12-02 10:51:27,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:28,075 INFO L225 Difference]: With dead ends: 756486 [2024-12-02 10:51:28,075 INFO L226 Difference]: Without dead ends: 387760 [2024-12-02 10:51:28,288 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 881 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2024-12-02 10:51:28,289 INFO L435 NwaCegarLoop]: 342 mSDtfsCounter, 1128 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:28,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 2598 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1582 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 10:51:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387760 states. [2024-12-02 10:51:40,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387760 to 267744. [2024-12-02 10:51:40,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267744 states, 252529 states have (on average 1.4957371232610908) internal successors, (377717), 252821 states have internal predecessors, (377717), 12040 states have call successors, (12040), 3174 states have call predecessors, (12040), 3174 states have return successors, (12040), 11748 states have call predecessors, (12040), 12040 states have call successors, (12040) [2024-12-02 10:51:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267744 states to 267744 states and 401797 transitions. [2024-12-02 10:51:40,892 INFO L78 Accepts]: Start accepts. Automaton has 267744 states and 401797 transitions. Word has length 446 [2024-12-02 10:51:40,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:40,893 INFO L471 AbstractCegarLoop]: Abstraction has 267744 states and 401797 transitions. [2024-12-02 10:51:40,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 21.88888888888889) internal successors, (394), 17 states have internal predecessors, (394), 6 states have call successors, (156), 4 states have call predecessors, (156), 7 states have return successors, (158), 6 states have call predecessors, (158), 6 states have call successors, (158) [2024-12-02 10:51:40,893 INFO L276 IsEmpty]: Start isEmpty. Operand 267744 states and 401797 transitions. [2024-12-02 10:51:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-12-02 10:51:40,904 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:40,904 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:51:40,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 10:51:41,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 10:51:41,105 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:41,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:41,105 INFO L85 PathProgramCache]: Analyzing trace with hash -246314451, now seen corresponding path program 1 times [2024-12-02 10:51:41,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:41,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885122625] [2024-12-02 10:51:41,105 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:41,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:51:42,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83952348] [2024-12-02 10:51:42,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:42,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:42,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:42,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:42,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 10:51:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:43,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 1126 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-12-02 10:51:43,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:45,777 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 4129 proven. 255 refuted. 0 times theorem prover too weak. 2696 trivial. 0 not checked. [2024-12-02 10:51:45,778 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:51:49,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:49,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885122625] [2024-12-02 10:51:49,992 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:51:49,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83952348] [2024-12-02 10:51:49,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83952348] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:49,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:51:49,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2024-12-02 10:51:49,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629772087] [2024-12-02 10:51:49,992 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 10:51:49,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 10:51:49,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:49,994 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 10:51:49,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-12-02 10:51:49,994 INFO L87 Difference]: Start difference. First operand 267744 states and 401797 transitions. Second operand has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (60), 5 states have call predecessors, (60), 8 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2024-12-02 10:52:30,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:52:31,000 INFO L93 Difference]: Finished difference Result 883234 states and 1328143 transitions. [2024-12-02 10:52:31,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2024-12-02 10:52:31,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (60), 5 states have call predecessors, (60), 8 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) Word has length 447 [2024-12-02 10:52:31,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:52:32,245 INFO L225 Difference]: With dead ends: 883234 [2024-12-02 10:52:32,245 INFO L226 Difference]: Without dead ends: 622128 [2024-12-02 10:52:32,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 594 GetRequests, 542 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=705, Invalid=2157, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 10:52:32,390 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 1174 mSDsluCounter, 2372 mSDsCounter, 0 mSdLazyCounter, 2395 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1193 SdHoareTripleChecker+Valid, 2968 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 2395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:52:32,390 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1193 Valid, 2968 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 2395 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 10:52:32,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622128 states. [2024-12-02 10:52:52,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622128 to 443512. [2024-12-02 10:52:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443512 states, 428158 states have (on average 1.5168746117087617) internal successors, (649462), 428450 states have internal predecessors, (649462), 11936 states have call successors, (11936), 3417 states have call predecessors, (11936), 3417 states have return successors, (11936), 11644 states have call predecessors, (11936), 11936 states have call successors, (11936) [2024-12-02 10:52:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443512 states to 443512 states and 673334 transitions. [2024-12-02 10:52:53,794 INFO L78 Accepts]: Start accepts. Automaton has 443512 states and 673334 transitions. Word has length 447 [2024-12-02 10:52:53,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:52:53,795 INFO L471 AbstractCegarLoop]: Abstraction has 443512 states and 673334 transitions. [2024-12-02 10:52:53,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 10.058823529411764) internal successors, (171), 16 states have internal predecessors, (171), 5 states have call successors, (60), 5 states have call predecessors, (60), 8 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2024-12-02 10:52:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 443512 states and 673334 transitions. [2024-12-02 10:52:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2024-12-02 10:52:53,817 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:52:53,817 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:52:53,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-12-02 10:52:54,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:52:54,017 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:52:54,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:52:54,018 INFO L85 PathProgramCache]: Analyzing trace with hash 207993071, now seen corresponding path program 1 times [2024-12-02 10:52:54,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:52:54,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868947923] [2024-12-02 10:52:54,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:54,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:52:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:55,826 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:52:55,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:52:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868947923] [2024-12-02 10:52:55,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868947923] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:52:55,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187611247] [2024-12-02 10:52:55,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:55,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:52:55,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:52:55,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:52:55,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 10:52:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:56,155 INFO L256 TraceCheckSpWp]: Trace formula consists of 1125 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 10:52:56,160 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:52:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 2729 proven. 132 refuted. 0 times theorem prover too weak. 4219 trivial. 0 not checked. [2024-12-02 10:52:56,610 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:52:56,994 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 45 proven. 132 refuted. 0 times theorem prover too weak. 6903 trivial. 0 not checked. [2024-12-02 10:52:56,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187611247] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 10:52:56,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 10:52:56,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-12-02 10:52:56,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075907871] [2024-12-02 10:52:56,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 10:52:56,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:52:56,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:52:56,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:52:56,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:52:56,997 INFO L87 Difference]: Start difference. First operand 443512 states and 673334 transitions. Second operand has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2024-12-02 10:53:15,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:53:15,169 INFO L93 Difference]: Finished difference Result 862226 states and 1308380 transitions. [2024-12-02 10:53:15,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 10:53:15,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) Word has length 447 [2024-12-02 10:53:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:53:16,035 INFO L225 Difference]: With dead ends: 862226 [2024-12-02 10:53:16,035 INFO L226 Difference]: Without dead ends: 439328 [2024-12-02 10:53:16,207 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 891 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:53:16,207 INFO L435 NwaCegarLoop]: 410 mSDtfsCounter, 260 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:53:16,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1114 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:53:16,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439328 states. [2024-12-02 10:53:34,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439328 to 356500. [2024-12-02 10:53:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356500 states, 340897 states have (on average 1.5063582255050645) internal successors, (513513), 341189 states have internal predecessors, (513513), 11936 states have call successors, (11936), 3666 states have call predecessors, (11936), 3666 states have return successors, (11936), 11644 states have call predecessors, (11936), 11936 states have call successors, (11936) [2024-12-02 10:53:34,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356500 states to 356500 states and 537385 transitions. [2024-12-02 10:53:34,918 INFO L78 Accepts]: Start accepts. Automaton has 356500 states and 537385 transitions. Word has length 447 [2024-12-02 10:53:34,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:53:34,919 INFO L471 AbstractCegarLoop]: Abstraction has 356500 states and 537385 transitions. [2024-12-02 10:53:34,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.714285714285715) internal successors, (159), 7 states have internal predecessors, (159), 2 states have call successors, (104), 2 states have call predecessors, (104), 4 states have return successors, (105), 2 states have call predecessors, (105), 2 states have call successors, (105) [2024-12-02 10:53:34,919 INFO L276 IsEmpty]: Start isEmpty. Operand 356500 states and 537385 transitions. [2024-12-02 10:53:34,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2024-12-02 10:53:34,940 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:53:34,940 INFO L218 NwaCegarLoop]: trace histogram [60, 60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:53:34,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 10:53:35,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 10:53:35,141 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:53:35,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:53:35,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1129995405, now seen corresponding path program 1 times [2024-12-02 10:53:35,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:53:35,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459767678] [2024-12-02 10:53:35,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:35,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:53:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-12-02 10:53:37,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [503097232] [2024-12-02 10:53:37,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:37,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:53:37,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:53:37,773 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:53:37,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13f44e90-34eb-4eee-8086-c1a364d574f9/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 10:53:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:53:38,239 INFO L256 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 10:53:38,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:53:39,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7080 backedges. 3956 proven. 429 refuted. 0 times theorem prover too weak. 2695 trivial. 0 not checked. [2024-12-02 10:53:39,709 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 10:53:40,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:53:40,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459767678] [2024-12-02 10:53:40,162 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-12-02 10:53:40,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503097232] [2024-12-02 10:53:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503097232] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:53:40,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:53:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-12-02 10:53:40,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774169138] [2024-12-02 10:53:40,162 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-12-02 10:53:40,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 10:53:40,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:53:40,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 10:53:40,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-12-02 10:53:40,164 INFO L87 Difference]: Start difference. First operand 356500 states and 537385 transitions. Second operand has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 5 states have call successors, (60), 5 states have call predecessors, (60), 9 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2024-12-02 10:53:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:53:50,172 INFO L93 Difference]: Finished difference Result 488700 states and 734031 transitions. [2024-12-02 10:53:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 10:53:50,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.5) internal successors, (175), 14 states have internal predecessors, (175), 5 states have call successors, (60), 5 states have call predecessors, (60), 9 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) Word has length 448 [2024-12-02 10:53:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:53:50,399 INFO L225 Difference]: With dead ends: 488700 [2024-12-02 10:53:50,399 INFO L226 Difference]: Without dead ends: 132448 [2024-12-02 10:53:50,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 763 GetRequests, 743 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:53:50,556 INFO L435 NwaCegarLoop]: 350 mSDtfsCounter, 616 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 10:53:50,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1517 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 10:53:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132448 states.