./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/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 96d87045534f1cc5b0e028ec5065a5ac2be4d13286f56c464cccf7714dd6ef42 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:20:49,982 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:20:50,039 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 15:20:50,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:20:50,045 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:20:50,066 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:20:50,067 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:20:50,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:20:50,067 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:20:50,067 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:20:50,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:20:50,068 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:20:50,068 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:20:50,068 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:20:50,068 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:20:50,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:20:50,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:20:50,069 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:20:50,070 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:20:50,070 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:20:50,070 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:20:50,071 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:20:50,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:20:50,072 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:20:50,072 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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/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 -> 96d87045534f1cc5b0e028ec5065a5ac2be4d13286f56c464cccf7714dd6ef42 [2024-12-02 15:20:50,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:20:50,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:20:50,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:20:50,285 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:20:50,286 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:20:50,287 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.i [2024-12-02 15:20:52,900 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/data/adc66e51d/346ec065f4e8466a9adc211d897b2f28/FLAGfd95b88a0 [2024-12-02 15:20:53,192 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:20:53,192 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.i [2024-12-02 15:20:53,205 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/data/adc66e51d/346ec065f4e8466a9adc211d897b2f28/FLAGfd95b88a0 [2024-12-02 15:20:53,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/data/adc66e51d/346ec065f4e8466a9adc211d897b2f28 [2024-12-02 15:20:53,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:20:53,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:20:53,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:20:53,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:20:53,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:20:53,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:53,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75f4c36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53, skipping insertion in model container [2024-12-02 15:20:53,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:53,530 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:20:53,652 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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.i[916,929] [2024-12-02 15:20:53,831 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:20:53,843 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:20:53,850 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_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-69.i[916,929] [2024-12-02 15:20:53,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:20:53,968 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:20:53,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53 WrapperNode [2024-12-02 15:20:53,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:20:53,970 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:20:53,970 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:20:53,970 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:20:53,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:53,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,076 INFO L138 Inliner]: procedures = 26, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 798 [2024-12-02 15:20:54,077 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:20:54,077 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:20:54,077 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:20:54,077 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:20:54,087 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,087 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,105 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,162 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 15:20:54,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,181 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,190 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,197 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,204 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,215 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:20:54,216 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:20:54,216 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:20:54,216 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:20:54,217 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (1/1) ... [2024-12-02 15:20:54,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:20:54,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:20:54,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:20:54,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:20:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:20:54,274 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:20:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:20:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:20:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:20:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:20:54,386 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:20:54,387 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:20:55,638 INFO L? ?]: Removed 104 outVars from TransFormulas that were not future-live. [2024-12-02 15:20:55,638 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:20:55,657 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:20:55,657 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 15:20:55,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:20:55 BoogieIcfgContainer [2024-12-02 15:20:55,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:20:55,661 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:20:55,661 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:20:55,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:20:55,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:20:53" (1/3) ... [2024-12-02 15:20:55,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9fc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:20:55, skipping insertion in model container [2024-12-02 15:20:55,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:20:53" (2/3) ... [2024-12-02 15:20:55,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a9fc6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:20:55, skipping insertion in model container [2024-12-02 15:20:55,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:20:55" (3/3) ... [2024-12-02 15:20:55,670 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-69.i [2024-12-02 15:20:55,688 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:20:55,690 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-69.i that has 2 procedures, 324 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 15:20:55,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:20:55,770 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;@20192077, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:20:55,770 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:20:55,775 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 254 states have (on average 1.562992125984252) internal successors, (397), 255 states have internal predecessors, (397), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-12-02 15:20:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-12-02 15:20:55,800 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:55,801 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:55,801 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:55,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2131073500, now seen corresponding path program 1 times [2024-12-02 15:20:55,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:55,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394197685] [2024-12-02 15:20:55,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:55,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-12-02 15:20:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394197685] [2024-12-02 15:20:56,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394197685] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:20:56,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718590320] [2024-12-02 15:20:56,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:56,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:20:56,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:20:56,424 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:20:56,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:20:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:56,846 INFO L256 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:20:56,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:20:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 8712 trivial. 0 not checked. [2024-12-02 15:20:56,915 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:20:56,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718590320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:20:56,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:20:56,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:20:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457215537] [2024-12-02 15:20:56,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:20:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:20:56,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:56,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:20:56,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:20:56,949 INFO L87 Difference]: Start difference. First operand has 324 states, 254 states have (on average 1.562992125984252) internal successors, (397), 255 states have internal predecessors, (397), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:20:57,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:57,005 INFO L93 Difference]: Finished difference Result 641 states and 1123 transitions. [2024-12-02 15:20:57,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:20:57,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) Word has length 461 [2024-12-02 15:20:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:57,016 INFO L225 Difference]: With dead ends: 641 [2024-12-02 15:20:57,016 INFO L226 Difference]: Without dead ends: 320 [2024-12-02 15:20:57,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 462 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 15:20:57,023 INFO L435 NwaCegarLoop]: 524 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, 524 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 15:20:57,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:20:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-12-02 15:20:57,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 320. [2024-12-02 15:20:57,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 251 states have (on average 1.5537848605577689) internal successors, (390), 251 states have internal predecessors, (390), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2024-12-02 15:20:57,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 524 transitions. [2024-12-02 15:20:57,094 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 524 transitions. Word has length 461 [2024-12-02 15:20:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:57,094 INFO L471 AbstractCegarLoop]: Abstraction has 320 states and 524 transitions. [2024-12-02 15:20:57,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 65.5) internal successors, (131), 2 states have internal predecessors, (131), 2 states have call successors, (67), 2 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:20:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 524 transitions. [2024-12-02 15:20:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2024-12-02 15:20:57,119 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:57,119 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:57,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:20:57,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:20:57,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:57,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:57,322 INFO L85 PathProgramCache]: Analyzing trace with hash 866371106, now seen corresponding path program 1 times [2024-12-02 15:20:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:57,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951964451] [2024-12-02 15:20:57,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:57,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:57,921 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:20:57,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:57,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951964451] [2024-12-02 15:20:57,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951964451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:20:57,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:20:57,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:20:57,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736098996] [2024-12-02 15:20:57,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:20:57,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:20:57,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:57,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:20:57,924 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:20:57,924 INFO L87 Difference]: Start difference. First operand 320 states and 524 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:58,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:58,045 INFO L93 Difference]: Finished difference Result 949 states and 1556 transitions. [2024-12-02 15:20:58,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:20:58,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 461 [2024-12-02 15:20:58,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:58,053 INFO L225 Difference]: With dead ends: 949 [2024-12-02 15:20:58,053 INFO L226 Difference]: Without dead ends: 632 [2024-12-02 15:20:58,054 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 15:20:58,055 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 510 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:20:58,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [510 Valid, 1013 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:20:58,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2024-12-02 15:20:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 628. [2024-12-02 15:20:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 491 states have (on average 1.5458248472505092) internal successors, (759), 491 states have internal predecessors, (759), 134 states have call successors, (134), 2 states have call predecessors, (134), 2 states have return successors, (134), 134 states have call predecessors, (134), 134 states have call successors, (134) [2024-12-02 15:20:58,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1027 transitions. [2024-12-02 15:20:58,129 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1027 transitions. Word has length 461 [2024-12-02 15:20:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:58,131 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 1027 transitions. [2024-12-02 15:20:58,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1027 transitions. [2024-12-02 15:20:58,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-12-02 15:20:58,140 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:58,140 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:58,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:20:58,140 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:58,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:58,141 INFO L85 PathProgramCache]: Analyzing trace with hash -2103367485, now seen corresponding path program 1 times [2024-12-02 15:20:58,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:58,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438502447] [2024-12-02 15:20:58,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:58,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:58,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:20:58,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:58,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438502447] [2024-12-02 15:20:58,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438502447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:20:58,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:20:58,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:20:58,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977423703] [2024-12-02 15:20:58,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:20:58,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:20:58,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:58,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:20:58,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:20:58,686 INFO L87 Difference]: Start difference. First operand 628 states and 1027 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:58,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:58,857 INFO L93 Difference]: Finished difference Result 1842 states and 3015 transitions. [2024-12-02 15:20:58,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:20:58,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 462 [2024-12-02 15:20:58,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:58,868 INFO L225 Difference]: With dead ends: 1842 [2024-12-02 15:20:58,868 INFO L226 Difference]: Without dead ends: 1217 [2024-12-02 15:20:58,870 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 15:20:58,871 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 472 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:20:58,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 1219 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:20:58,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-12-02 15:20:58,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1215. [2024-12-02 15:20:58,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 942 states have (on average 1.5286624203821657) internal successors, (1440), 942 states have internal predecessors, (1440), 268 states have call successors, (268), 4 states have call predecessors, (268), 4 states have return successors, (268), 268 states have call predecessors, (268), 268 states have call successors, (268) [2024-12-02 15:20:59,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1976 transitions. [2024-12-02 15:20:59,002 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1976 transitions. Word has length 462 [2024-12-02 15:20:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:59,003 INFO L471 AbstractCegarLoop]: Abstraction has 1215 states and 1976 transitions. [2024-12-02 15:20:59,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1976 transitions. [2024-12-02 15:20:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-12-02 15:20:59,008 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:59,009 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:59,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:20:59,009 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:59,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash -861889209, now seen corresponding path program 1 times [2024-12-02 15:20:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639132949] [2024-12-02 15:20:59,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:59,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:59,387 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:20:59,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:59,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639132949] [2024-12-02 15:20:59,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639132949] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:20:59,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:20:59,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:20:59,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323551550] [2024-12-02 15:20:59,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:20:59,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:20:59,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:59,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:20:59,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:20:59,390 INFO L87 Difference]: Start difference. First operand 1215 states and 1976 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:59,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:59,582 INFO L93 Difference]: Finished difference Result 3627 states and 5900 transitions. [2024-12-02 15:20:59,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:20:59,582 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 462 [2024-12-02 15:20:59,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:59,598 INFO L225 Difference]: With dead ends: 3627 [2024-12-02 15:20:59,598 INFO L226 Difference]: Without dead ends: 2415 [2024-12-02 15:20:59,603 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 15:20:59,604 INFO L435 NwaCegarLoop]: 765 mSDtfsCounter, 473 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:20:59,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 1267 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:20:59,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2415 states. [2024-12-02 15:20:59,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2415 to 2401. [2024-12-02 15:20:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2401 states, 1856 states have (on average 1.5183189655172413) internal successors, (2818), 1856 states have internal predecessors, (2818), 536 states have call successors, (536), 8 states have call predecessors, (536), 8 states have return successors, (536), 536 states have call predecessors, (536), 536 states have call successors, (536) [2024-12-02 15:20:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2401 states to 2401 states and 3890 transitions. [2024-12-02 15:20:59,787 INFO L78 Accepts]: Start accepts. Automaton has 2401 states and 3890 transitions. Word has length 462 [2024-12-02 15:20:59,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:59,788 INFO L471 AbstractCegarLoop]: Abstraction has 2401 states and 3890 transitions. [2024-12-02 15:20:59,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:20:59,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2401 states and 3890 transitions. [2024-12-02 15:20:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-12-02 15:20:59,792 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:59,792 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:20:59,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 15:20:59,793 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:20:59,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:59,793 INFO L85 PathProgramCache]: Analyzing trace with hash 2029298407, now seen corresponding path program 1 times [2024-12-02 15:20:59,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:59,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451036770] [2024-12-02 15:20:59,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:20:59,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:00,177 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:00,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:00,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451036770] [2024-12-02 15:21:00,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451036770] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:00,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:00,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:21:00,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609780528] [2024-12-02 15:21:00,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:00,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:21:00,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:00,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:21:00,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:21:00,180 INFO L87 Difference]: Start difference. First operand 2401 states and 3890 transitions. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:00,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:00,432 INFO L93 Difference]: Finished difference Result 7173 states and 11632 transitions. [2024-12-02 15:21:00,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:21:00,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 462 [2024-12-02 15:21:00,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:00,452 INFO L225 Difference]: With dead ends: 7173 [2024-12-02 15:21:00,452 INFO L226 Difference]: Without dead ends: 4775 [2024-12-02 15:21:00,458 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 15:21:00,459 INFO L435 NwaCegarLoop]: 620 mSDtfsCounter, 512 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:00,459 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1122 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:21:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2024-12-02 15:21:00,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4765. [2024-12-02 15:21:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4765 states, 3676 states have (on average 1.514689880304679) internal successors, (5568), 3676 states have internal predecessors, (5568), 1072 states have call successors, (1072), 16 states have call predecessors, (1072), 16 states have return successors, (1072), 1072 states have call predecessors, (1072), 1072 states have call successors, (1072) [2024-12-02 15:21:00,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 7712 transitions. [2024-12-02 15:21:00,768 INFO L78 Accepts]: Start accepts. Automaton has 4765 states and 7712 transitions. Word has length 462 [2024-12-02 15:21:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:00,769 INFO L471 AbstractCegarLoop]: Abstraction has 4765 states and 7712 transitions. [2024-12-02 15:21:00,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 4765 states and 7712 transitions. [2024-12-02 15:21:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-12-02 15:21:00,775 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:00,775 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:00,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:21:00,775 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:00,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:00,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1612878342, now seen corresponding path program 1 times [2024-12-02 15:21:00,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:00,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437908263] [2024-12-02 15:21:00,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:00,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:01,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:01,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437908263] [2024-12-02 15:21:01,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437908263] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:01,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:01,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 15:21:01,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879475284] [2024-12-02 15:21:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:01,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:21:01,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:01,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:21:01,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:21:01,806 INFO L87 Difference]: Start difference. First operand 4765 states and 7712 transitions. Second operand has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:03,252 INFO L93 Difference]: Finished difference Result 18981 states and 30644 transitions. [2024-12-02 15:21:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:21:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 463 [2024-12-02 15:21:03,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:03,308 INFO L225 Difference]: With dead ends: 18981 [2024-12-02 15:21:03,308 INFO L226 Difference]: Without dead ends: 14219 [2024-12-02 15:21:03,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:21:03,324 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 1787 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 1924 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:03,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 1924 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-12-02 15:21:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14219 states. [2024-12-02 15:21:04,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14219 to 10533. [2024-12-02 15:21:04,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10533 states, 8356 states have (on average 1.5294399234083293) internal successors, (12780), 8356 states have internal predecessors, (12780), 2144 states have call successors, (2144), 32 states have call predecessors, (2144), 32 states have return successors, (2144), 2144 states have call predecessors, (2144), 2144 states have call successors, (2144) [2024-12-02 15:21:04,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10533 states to 10533 states and 17068 transitions. [2024-12-02 15:21:04,098 INFO L78 Accepts]: Start accepts. Automaton has 10533 states and 17068 transitions. Word has length 463 [2024-12-02 15:21:04,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:04,098 INFO L471 AbstractCegarLoop]: Abstraction has 10533 states and 17068 transitions. [2024-12-02 15:21:04,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 10533 states and 17068 transitions. [2024-12-02 15:21:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2024-12-02 15:21:04,106 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:04,106 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:04,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 15:21:04,106 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:04,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:04,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2007245128, now seen corresponding path program 1 times [2024-12-02 15:21:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:04,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278813803] [2024-12-02 15:21:04,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:04,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:04,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:04,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:04,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278813803] [2024-12-02 15:21:04,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278813803] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:04,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:04,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:04,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012634342] [2024-12-02 15:21:04,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:04,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:04,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:04,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:04,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:04,970 INFO L87 Difference]: Start difference. First operand 10533 states and 17068 transitions. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:06,351 INFO L93 Difference]: Finished difference Result 26833 states and 43490 transitions. [2024-12-02 15:21:06,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:21:06,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 463 [2024-12-02 15:21:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:06,440 INFO L225 Difference]: With dead ends: 26833 [2024-12-02 15:21:06,440 INFO L226 Difference]: Without dead ends: 16303 [2024-12-02 15:21:06,479 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 15:21:06,480 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 590 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:06,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 1388 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:21:06,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2024-12-02 15:21:07,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 16285. [2024-12-02 15:21:07,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16285 states, 13020 states have (on average 1.530568356374808) internal successors, (19928), 13020 states have internal predecessors, (19928), 3216 states have call successors, (3216), 48 states have call predecessors, (3216), 48 states have return successors, (3216), 3216 states have call predecessors, (3216), 3216 states have call successors, (3216) [2024-12-02 15:21:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16285 states to 16285 states and 26360 transitions. [2024-12-02 15:21:07,747 INFO L78 Accepts]: Start accepts. Automaton has 16285 states and 26360 transitions. Word has length 463 [2024-12-02 15:21:07,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:07,748 INFO L471 AbstractCegarLoop]: Abstraction has 16285 states and 26360 transitions. [2024-12-02 15:21:07,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 states have internal predecessors, (131), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:07,749 INFO L276 IsEmpty]: Start isEmpty. Operand 16285 states and 26360 transitions. [2024-12-02 15:21:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-12-02 15:21:07,768 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:07,769 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:07,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 15:21:07,769 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:07,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:07,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1611824653, now seen corresponding path program 1 times [2024-12-02 15:21:07,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:07,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837061969] [2024-12-02 15:21:07,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:07,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:08,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:08,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837061969] [2024-12-02 15:21:08,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837061969] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:08,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:08,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:08,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103482039] [2024-12-02 15:21:08,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:08,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:08,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:08,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:08,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:08,858 INFO L87 Difference]: Start difference. First operand 16285 states and 26360 transitions. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:09,894 INFO L93 Difference]: Finished difference Result 41647 states and 67417 transitions. [2024-12-02 15:21:09,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:21:09,895 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 464 [2024-12-02 15:21:09,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:09,997 INFO L225 Difference]: With dead ends: 41647 [2024-12-02 15:21:09,997 INFO L226 Difference]: Without dead ends: 25365 [2024-12-02 15:21:10,095 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 15:21:10,096 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 700 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:10,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1823 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:21:10,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25365 states. [2024-12-02 15:21:11,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25365 to 20369. [2024-12-02 15:21:11,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20369 states, 16288 states have (on average 1.5278732809430255) internal successors, (24886), 16288 states have internal predecessors, (24886), 4020 states have call successors, (4020), 60 states have call predecessors, (4020), 60 states have return successors, (4020), 4020 states have call predecessors, (4020), 4020 states have call successors, (4020) [2024-12-02 15:21:11,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20369 states to 20369 states and 32926 transitions. [2024-12-02 15:21:11,739 INFO L78 Accepts]: Start accepts. Automaton has 20369 states and 32926 transitions. Word has length 464 [2024-12-02 15:21:11,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:11,740 INFO L471 AbstractCegarLoop]: Abstraction has 20369 states and 32926 transitions. [2024-12-02 15:21:11,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 20369 states and 32926 transitions. [2024-12-02 15:21:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-12-02 15:21:11,752 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:11,752 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:11,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 15:21:11,752 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:11,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:11,753 INFO L85 PathProgramCache]: Analyzing trace with hash 100712911, now seen corresponding path program 1 times [2024-12-02 15:21:11,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:11,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174230987] [2024-12-02 15:21:11,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:11,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:14,272 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:14,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:14,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174230987] [2024-12-02 15:21:14,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174230987] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:14,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:14,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 15:21:14,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135298823] [2024-12-02 15:21:14,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:14,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:21:14,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:14,274 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:21:14,275 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:21:14,275 INFO L87 Difference]: Start difference. First operand 20369 states and 32926 transitions. Second operand has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:16,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:16,380 INFO L93 Difference]: Finished difference Result 62671 states and 100280 transitions. [2024-12-02 15:21:16,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:21:16,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 464 [2024-12-02 15:21:16,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:16,486 INFO L225 Difference]: With dead ends: 62671 [2024-12-02 15:21:16,486 INFO L226 Difference]: Without dead ends: 42305 [2024-12-02 15:21:16,525 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:21:16,526 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 1723 mSDsluCounter, 1988 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1723 SdHoareTripleChecker+Valid, 2618 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:16,526 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1723 Valid, 2618 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 15:21:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42305 states. [2024-12-02 15:21:18,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42305 to 24579. [2024-12-02 15:21:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24579 states, 20498 states have (on average 1.559078934530198) internal successors, (31958), 20498 states have internal predecessors, (31958), 4020 states have call successors, (4020), 60 states have call predecessors, (4020), 60 states have return successors, (4020), 4020 states have call predecessors, (4020), 4020 states have call successors, (4020) [2024-12-02 15:21:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24579 states to 24579 states and 39998 transitions. [2024-12-02 15:21:18,670 INFO L78 Accepts]: Start accepts. Automaton has 24579 states and 39998 transitions. Word has length 464 [2024-12-02 15:21:18,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:18,671 INFO L471 AbstractCegarLoop]: Abstraction has 24579 states and 39998 transitions. [2024-12-02 15:21:18,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.5) internal successors, (132), 8 states have internal predecessors, (132), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:18,671 INFO L276 IsEmpty]: Start isEmpty. Operand 24579 states and 39998 transitions. [2024-12-02 15:21:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2024-12-02 15:21:18,678 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:18,678 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:18,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 15:21:18,678 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:18,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:18,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1161457529, now seen corresponding path program 1 times [2024-12-02 15:21:18,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:18,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373064475] [2024-12-02 15:21:18,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:26,725 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:26,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373064475] [2024-12-02 15:21:26,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373064475] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:26,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:26,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:21:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614251700] [2024-12-02 15:21:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:26,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:21:26,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:26,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:21:26,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:26,727 INFO L87 Difference]: Start difference. First operand 24579 states and 39998 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:29,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:29,501 INFO L93 Difference]: Finished difference Result 78707 states and 127573 transitions. [2024-12-02 15:21:29,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:21:29,502 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 464 [2024-12-02 15:21:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:29,621 INFO L225 Difference]: With dead ends: 78707 [2024-12-02 15:21:29,621 INFO L226 Difference]: Without dead ends: 54131 [2024-12-02 15:21:29,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:21:29,661 INFO L435 NwaCegarLoop]: 569 mSDtfsCounter, 614 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:29,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [614 Valid, 1690 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 15:21:29,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54131 states. [2024-12-02 15:21:31,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54131 to 50107. [2024-12-02 15:21:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50107 states, 41946 states have (on average 1.5521384637390931) internal successors, (65106), 41946 states have internal predecessors, (65106), 8040 states have call successors, (8040), 120 states have call predecessors, (8040), 120 states have return successors, (8040), 8040 states have call predecessors, (8040), 8040 states have call successors, (8040) [2024-12-02 15:21:31,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50107 states to 50107 states and 81186 transitions. [2024-12-02 15:21:31,746 INFO L78 Accepts]: Start accepts. Automaton has 50107 states and 81186 transitions. Word has length 464 [2024-12-02 15:21:31,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:31,747 INFO L471 AbstractCegarLoop]: Abstraction has 50107 states and 81186 transitions. [2024-12-02 15:21:31,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 5 states have internal predecessors, (132), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:31,748 INFO L276 IsEmpty]: Start isEmpty. Operand 50107 states and 81186 transitions. [2024-12-02 15:21:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:21:31,771 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:31,771 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:31,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 15:21:31,772 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:31,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:31,772 INFO L85 PathProgramCache]: Analyzing trace with hash -514657740, now seen corresponding path program 1 times [2024-12-02 15:21:31,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:31,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208580846] [2024-12-02 15:21:31,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:31,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:32,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:32,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:32,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208580846] [2024-12-02 15:21:32,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208580846] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:32,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:32,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:21:32,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971604554] [2024-12-02 15:21:32,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:32,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:21:32,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:32,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:21:32,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:21:32,946 INFO L87 Difference]: Start difference. First operand 50107 states and 81186 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:35,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:35,046 INFO L93 Difference]: Finished difference Result 124776 states and 201677 transitions. [2024-12-02 15:21:35,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:21:35,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:21:35,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:35,173 INFO L225 Difference]: With dead ends: 124776 [2024-12-02 15:21:35,173 INFO L226 Difference]: Without dead ends: 74672 [2024-12-02 15:21:35,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 15:21:35,230 INFO L435 NwaCegarLoop]: 902 mSDtfsCounter, 882 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:35,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1768 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:21:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74672 states. [2024-12-02 15:21:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74672 to 74608. [2024-12-02 15:21:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74608 states, 62847 states have (on average 1.5468041433958661) internal successors, (97212), 62907 states have internal predecessors, (97212), 11520 states have call successors, (11520), 240 states have call predecessors, (11520), 240 states have return successors, (11520), 11460 states have call predecessors, (11520), 11520 states have call successors, (11520) [2024-12-02 15:21:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74608 states to 74608 states and 120252 transitions. [2024-12-02 15:21:38,873 INFO L78 Accepts]: Start accepts. Automaton has 74608 states and 120252 transitions. Word has length 465 [2024-12-02 15:21:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:38,874 INFO L471 AbstractCegarLoop]: Abstraction has 74608 states and 120252 transitions. [2024-12-02 15:21:38,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:21:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 74608 states and 120252 transitions. [2024-12-02 15:21:38,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:21:38,893 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:38,893 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:38,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 15:21:38,893 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:38,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1586625664, now seen corresponding path program 1 times [2024-12-02 15:21:38,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:38,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354024892] [2024-12-02 15:21:38,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:40,938 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:40,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:40,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354024892] [2024-12-02 15:21:40,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354024892] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:40,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:40,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:21:40,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673223925] [2024-12-02 15:21:40,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:40,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:21:40,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:40,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:21:40,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:21:40,941 INFO L87 Difference]: Start difference. First operand 74608 states and 120252 transitions. Second operand has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:46,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:46,432 INFO L93 Difference]: Finished difference Result 186030 states and 295646 transitions. [2024-12-02 15:21:46,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:21:46,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 465 [2024-12-02 15:21:46,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:46,643 INFO L225 Difference]: With dead ends: 186030 [2024-12-02 15:21:46,643 INFO L226 Difference]: Without dead ends: 111425 [2024-12-02 15:21:46,734 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:21:46,735 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 1968 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1968 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:46,735 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1968 Valid, 4210 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 15:21:46,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111425 states. [2024-12-02 15:21:50,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111425 to 73398. [2024-12-02 15:21:50,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73398 states, 61457 states have (on average 1.540133752054282) internal successors, (94652), 61517 states have internal predecessors, (94652), 11520 states have call successors, (11520), 420 states have call predecessors, (11520), 420 states have return successors, (11520), 11460 states have call predecessors, (11520), 11520 states have call successors, (11520) [2024-12-02 15:21:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73398 states to 73398 states and 117692 transitions. [2024-12-02 15:21:50,942 INFO L78 Accepts]: Start accepts. Automaton has 73398 states and 117692 transitions. Word has length 465 [2024-12-02 15:21:50,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:50,942 INFO L471 AbstractCegarLoop]: Abstraction has 73398 states and 117692 transitions. [2024-12-02 15:21:50,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.777777777777779) internal successors, (133), 9 states have internal predecessors, (133), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:21:50,942 INFO L276 IsEmpty]: Start isEmpty. Operand 73398 states and 117692 transitions. [2024-12-02 15:21:50,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:21:50,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:50,967 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:50,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 15:21:50,967 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:21:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:50,967 INFO L85 PathProgramCache]: Analyzing trace with hash -642974732, now seen corresponding path program 1 times [2024-12-02 15:21:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776311115] [2024-12-02 15:21:50,968 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:21:50,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:21:57,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:21:57,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776311115] [2024-12-02 15:21:57,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776311115] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:21:57,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:21:57,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:21:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175990382] [2024-12-02 15:21:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:21:57,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:21:57,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:57,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:21:57,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:21:57,697 INFO L87 Difference]: Start difference. First operand 73398 states and 117692 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:00,718 INFO L93 Difference]: Finished difference Result 155293 states and 248055 transitions. [2024-12-02 15:22:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:22:00,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:22:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:00,899 INFO L225 Difference]: With dead ends: 155293 [2024-12-02 15:22:00,899 INFO L226 Difference]: Without dead ends: 81898 [2024-12-02 15:22:00,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:22:00,977 INFO L435 NwaCegarLoop]: 631 mSDtfsCounter, 624 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:00,978 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 1951 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:22:01,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81898 states. [2024-12-02 15:22:05,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81898 to 72948. [2024-12-02 15:22:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72948 states, 61007 states have (on average 1.538216925926533) internal successors, (93842), 61067 states have internal predecessors, (93842), 11520 states have call successors, (11520), 420 states have call predecessors, (11520), 420 states have return successors, (11520), 11460 states have call predecessors, (11520), 11520 states have call successors, (11520) [2024-12-02 15:22:05,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72948 states to 72948 states and 116882 transitions. [2024-12-02 15:22:05,250 INFO L78 Accepts]: Start accepts. Automaton has 72948 states and 116882 transitions. Word has length 465 [2024-12-02 15:22:05,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:05,250 INFO L471 AbstractCegarLoop]: Abstraction has 72948 states and 116882 transitions. [2024-12-02 15:22:05,250 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 72948 states and 116882 transitions. [2024-12-02 15:22:05,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:22:05,267 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:05,267 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:05,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 15:22:05,268 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:05,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:05,268 INFO L85 PathProgramCache]: Analyzing trace with hash -831858814, now seen corresponding path program 1 times [2024-12-02 15:22:05,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:05,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837256766] [2024-12-02 15:22:05,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:05,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:22:05,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:05,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837256766] [2024-12-02 15:22:05,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837256766] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:05,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:05,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:22:05,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61004111] [2024-12-02 15:22:05,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:05,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:22:05,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:05,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:22:05,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:22:05,428 INFO L87 Difference]: Start difference. First operand 72948 states and 116882 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:07,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:07,996 INFO L93 Difference]: Finished difference Result 141854 states and 226940 transitions. [2024-12-02 15:22:07,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:22:07,997 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:22:07,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:08,135 INFO L225 Difference]: With dead ends: 141854 [2024-12-02 15:22:08,135 INFO L226 Difference]: Without dead ends: 68909 [2024-12-02 15:22:08,205 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 15:22:08,205 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 440 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 1417 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:08,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 1417 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:22:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68909 states. [2024-12-02 15:22:11,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68909 to 66179. [2024-12-02 15:22:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66179 states, 54238 states have (on average 1.5057708617574395) internal successors, (81670), 54298 states have internal predecessors, (81670), 11520 states have call successors, (11520), 420 states have call predecessors, (11520), 420 states have return successors, (11520), 11460 states have call predecessors, (11520), 11520 states have call successors, (11520) [2024-12-02 15:22:11,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66179 states to 66179 states and 104710 transitions. [2024-12-02 15:22:11,273 INFO L78 Accepts]: Start accepts. Automaton has 66179 states and 104710 transitions. Word has length 465 [2024-12-02 15:22:11,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:11,273 INFO L471 AbstractCegarLoop]: Abstraction has 66179 states and 104710 transitions. [2024-12-02 15:22:11,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:11,273 INFO L276 IsEmpty]: Start isEmpty. Operand 66179 states and 104710 transitions. [2024-12-02 15:22:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:22:11,302 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:11,302 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:11,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 15:22:11,302 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:11,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:11,303 INFO L85 PathProgramCache]: Analyzing trace with hash -965872320, now seen corresponding path program 1 times [2024-12-02 15:22:11,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:11,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888136314] [2024-12-02 15:22:11,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:11,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:11,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:22:12,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:12,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888136314] [2024-12-02 15:22:12,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888136314] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:12,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:12,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:22:12,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211013999] [2024-12-02 15:22:12,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:12,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:22:12,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:12,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:22:12,626 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:22:12,626 INFO L87 Difference]: Start difference. First operand 66179 states and 104710 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:18,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:18,729 INFO L93 Difference]: Finished difference Result 206110 states and 325971 transitions. [2024-12-02 15:22:18,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:22:18,729 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:22:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:19,039 INFO L225 Difference]: With dead ends: 206110 [2024-12-02 15:22:19,039 INFO L226 Difference]: Without dead ends: 139934 [2024-12-02 15:22:19,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:22:19,127 INFO L435 NwaCegarLoop]: 1089 mSDtfsCounter, 1424 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1424 SdHoareTripleChecker+Valid, 2264 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:19,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1424 Valid, 2264 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:22:19,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139934 states. [2024-12-02 15:22:26,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139934 to 129473. [2024-12-02 15:22:26,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129473 states, 107092 states have (on average 1.5103462443506517) internal successors, (161746), 107332 states have internal predecessors, (161746), 21600 states have call successors, (21600), 780 states have call predecessors, (21600), 780 states have return successors, (21600), 21360 states have call predecessors, (21600), 21600 states have call successors, (21600) [2024-12-02 15:22:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129473 states to 129473 states and 204946 transitions. [2024-12-02 15:22:26,717 INFO L78 Accepts]: Start accepts. Automaton has 129473 states and 204946 transitions. Word has length 465 [2024-12-02 15:22:26,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:26,718 INFO L471 AbstractCegarLoop]: Abstraction has 129473 states and 204946 transitions. [2024-12-02 15:22:26,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:26,718 INFO L276 IsEmpty]: Start isEmpty. Operand 129473 states and 204946 transitions. [2024-12-02 15:22:26,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:22:26,740 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:26,740 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:26,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 15:22:26,740 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:26,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:26,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1468051318, now seen corresponding path program 1 times [2024-12-02 15:22:26,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:26,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157903320] [2024-12-02 15:22:26,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:26,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:22:27,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:27,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157903320] [2024-12-02 15:22:27,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157903320] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:27,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:27,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:22:27,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836317170] [2024-12-02 15:22:27,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:27,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:22:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:27,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:22:27,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:22:27,443 INFO L87 Difference]: Start difference. First operand 129473 states and 204946 transitions. Second operand has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:33,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:33,439 INFO L93 Difference]: Finished difference Result 259228 states and 410225 transitions. [2024-12-02 15:22:33,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:22:33,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:22:33,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:33,716 INFO L225 Difference]: With dead ends: 259228 [2024-12-02 15:22:33,717 INFO L226 Difference]: Without dead ends: 129758 [2024-12-02 15:22:33,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:22:33,861 INFO L435 NwaCegarLoop]: 1074 mSDtfsCounter, 1342 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:33,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 2470 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:22:33,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129758 states. [2024-12-02 15:22:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129758 to 129473. [2024-12-02 15:22:40,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129473 states, 107092 states have (on average 1.5095058454413028) internal successors, (161656), 107332 states have internal predecessors, (161656), 21600 states have call successors, (21600), 780 states have call predecessors, (21600), 780 states have return successors, (21600), 21360 states have call predecessors, (21600), 21600 states have call successors, (21600) [2024-12-02 15:22:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129473 states to 129473 states and 204856 transitions. [2024-12-02 15:22:41,105 INFO L78 Accepts]: Start accepts. Automaton has 129473 states and 204856 transitions. Word has length 465 [2024-12-02 15:22:41,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:41,105 INFO L471 AbstractCegarLoop]: Abstraction has 129473 states and 204856 transitions. [2024-12-02 15:22:41,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 129473 states and 204856 transitions. [2024-12-02 15:22:41,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2024-12-02 15:22:41,137 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:41,137 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:41,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 15:22:41,137 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:41,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:41,138 INFO L85 PathProgramCache]: Analyzing trace with hash -725632574, now seen corresponding path program 1 times [2024-12-02 15:22:41,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:41,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026345554] [2024-12-02 15:22:41,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:41,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:41,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:22:41,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:41,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026345554] [2024-12-02 15:22:41,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026345554] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:22:41,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:22:41,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:22:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886162311] [2024-12-02 15:22:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:22:41,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 15:22:41,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:22:41,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 15:22:41,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 15:22:41,639 INFO L87 Difference]: Start difference. First operand 129473 states and 204856 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:22:48,352 INFO L93 Difference]: Finished difference Result 319221 states and 505643 transitions. [2024-12-02 15:22:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 15:22:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 465 [2024-12-02 15:22:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:22:48,704 INFO L225 Difference]: With dead ends: 319221 [2024-12-02 15:22:48,704 INFO L226 Difference]: Without dead ends: 189751 [2024-12-02 15:22:48,837 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 15:22:48,838 INFO L435 NwaCegarLoop]: 511 mSDtfsCounter, 1037 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:22:48,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1037 Valid, 1527 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:22:48,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189751 states. [2024-12-02 15:22:55,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189751 to 144215. [2024-12-02 15:22:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144215 states, 121702 states have (on average 1.5209610359731147) internal successors, (185104), 121930 states have internal predecessors, (185104), 21708 states have call successors, (21708), 804 states have call predecessors, (21708), 804 states have return successors, (21708), 21480 states have call predecessors, (21708), 21708 states have call successors, (21708) [2024-12-02 15:22:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144215 states to 144215 states and 228520 transitions. [2024-12-02 15:22:56,142 INFO L78 Accepts]: Start accepts. Automaton has 144215 states and 228520 transitions. Word has length 465 [2024-12-02 15:22:56,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:22:56,142 INFO L471 AbstractCegarLoop]: Abstraction has 144215 states and 228520 transitions. [2024-12-02 15:22:56,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:22:56,143 INFO L276 IsEmpty]: Start isEmpty. Operand 144215 states and 228520 transitions. [2024-12-02 15:22:56,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-12-02 15:22:56,154 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:22:56,154 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:22:56,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 15:22:56,154 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:22:56,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:22:56,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1323808437, now seen corresponding path program 1 times [2024-12-02 15:22:56,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:22:56,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458359864] [2024-12-02 15:22:56,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:56,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:22:57,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:57,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 27 proven. 171 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:22:57,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:22:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458359864] [2024-12-02 15:22:57,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458359864] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:22:57,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731473841] [2024-12-02 15:22:57,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:22:57,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:22:57,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:22:57,676 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:22:57,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:22:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:22:58,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-12-02 15:22:58,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:22:59,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 5480 proven. 399 refuted. 0 times theorem prover too weak. 2965 trivial. 0 not checked. [2024-12-02 15:22:59,436 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:23:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 144 proven. 249 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2024-12-02 15:23:00,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731473841] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:23:00,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:23:00,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 20 [2024-12-02 15:23:00,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283628202] [2024-12-02 15:23:00,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:23:00,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:23:00,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:00,310 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:23:00,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:23:00,311 INFO L87 Difference]: Start difference. First operand 144215 states and 228520 transitions. Second operand has 20 states, 20 states have (on average 17.1) internal successors, (342), 19 states have internal predecessors, (342), 7 states have call successors, (177), 4 states have call predecessors, (177), 8 states have return successors, (179), 7 states have call predecessors, (179), 7 states have call successors, (179) [2024-12-02 15:23:10,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:23:10,413 INFO L93 Difference]: Finished difference Result 305997 states and 477060 transitions. [2024-12-02 15:23:10,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:23:10,414 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 17.1) internal successors, (342), 19 states have internal predecessors, (342), 7 states have call successors, (177), 4 states have call predecessors, (177), 8 states have return successors, (179), 7 states have call predecessors, (179), 7 states have call successors, (179) Word has length 467 [2024-12-02 15:23:10,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:23:10,934 INFO L225 Difference]: With dead ends: 305997 [2024-12-02 15:23:10,934 INFO L226 Difference]: Without dead ends: 161785 [2024-12-02 15:23:11,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 966 GetRequests, 925 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=491, Invalid=1315, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:23:11,069 INFO L435 NwaCegarLoop]: 411 mSDtfsCounter, 2433 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2434 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:23:11,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2434 Valid, 2407 Invalid, 1821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:23:11,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161785 states. [2024-12-02 15:23:19,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161785 to 160073. [2024-12-02 15:23:19,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160073 states, 135130 states have (on average 1.484822023236883) internal successors, (200644), 135448 states have internal predecessors, (200644), 22518 states have call successors, (22518), 2424 states have call predecessors, (22518), 2424 states have return successors, (22518), 22200 states have call predecessors, (22518), 22518 states have call successors, (22518) [2024-12-02 15:23:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160073 states to 160073 states and 245680 transitions. [2024-12-02 15:23:19,797 INFO L78 Accepts]: Start accepts. Automaton has 160073 states and 245680 transitions. Word has length 467 [2024-12-02 15:23:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:23:19,798 INFO L471 AbstractCegarLoop]: Abstraction has 160073 states and 245680 transitions. [2024-12-02 15:23:19,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 17.1) internal successors, (342), 19 states have internal predecessors, (342), 7 states have call successors, (177), 4 states have call predecessors, (177), 8 states have return successors, (179), 7 states have call predecessors, (179), 7 states have call successors, (179) [2024-12-02 15:23:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 160073 states and 245680 transitions. [2024-12-02 15:23:19,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-12-02 15:23:19,812 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:23:19,813 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:19,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 15:23:20,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 15:23:20,013 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:20,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:20,014 INFO L85 PathProgramCache]: Analyzing trace with hash 523716116, now seen corresponding path program 1 times [2024-12-02 15:23:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:20,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503475068] [2024-12-02 15:23:20,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:20,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:23:20,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:20,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503475068] [2024-12-02 15:23:20,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503475068] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:23:20,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:23:20,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 15:23:20,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452410352] [2024-12-02 15:23:20,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:23:20,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 15:23:20,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:20,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 15:23:20,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:23:20,936 INFO L87 Difference]: Start difference. First operand 160073 states and 245680 transitions. Second operand has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:23:37,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:23:37,843 INFO L93 Difference]: Finished difference Result 434955 states and 653986 transitions. [2024-12-02 15:23:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 15:23:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 467 [2024-12-02 15:23:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:23:38,479 INFO L225 Difference]: With dead ends: 434955 [2024-12-02 15:23:38,480 INFO L226 Difference]: Without dead ends: 385543 [2024-12-02 15:23:38,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=265, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:23:38,584 INFO L435 NwaCegarLoop]: 1063 mSDtfsCounter, 3959 mSDsluCounter, 7602 mSDsCounter, 0 mSdLazyCounter, 2584 mSolverCounterSat, 309 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3959 SdHoareTripleChecker+Valid, 8665 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 309 IncrementalHoareTripleChecker+Valid, 2584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:23:38,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3959 Valid, 8665 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [309 Valid, 2584 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-12-02 15:23:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385543 states. [2024-12-02 15:23:51,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385543 to 229521. [2024-12-02 15:23:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229521 states, 195994 states have (on average 1.4828106982866822) internal successors, (290622), 196448 states have internal predecessors, (290622), 30294 states have call successors, (30294), 3232 states have call predecessors, (30294), 3232 states have return successors, (30294), 29840 states have call predecessors, (30294), 30294 states have call successors, (30294) [2024-12-02 15:23:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229521 states to 229521 states and 351210 transitions. [2024-12-02 15:23:52,138 INFO L78 Accepts]: Start accepts. Automaton has 229521 states and 351210 transitions. Word has length 467 [2024-12-02 15:23:52,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:23:52,139 INFO L471 AbstractCegarLoop]: Abstraction has 229521 states and 351210 transitions. [2024-12-02 15:23:52,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.5) internal successors, (135), 10 states have internal predecessors, (135), 2 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) [2024-12-02 15:23:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 229521 states and 351210 transitions. [2024-12-02 15:23:52,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2024-12-02 15:23:52,161 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:23:52,162 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:23:52,162 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 15:23:52,162 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:23:52,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:23:52,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1909919510, now seen corresponding path program 1 times [2024-12-02 15:23:52,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:23:52,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089412862] [2024-12-02 15:23:52,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:52,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:23:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 6 proven. 192 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:23:55,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:23:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089412862] [2024-12-02 15:23:55,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089412862] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:23:55,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760962610] [2024-12-02 15:23:55,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:23:55,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:23:55,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:23:55,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:23:55,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:23:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:23:55,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 1118 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:23:55,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:23:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2048 proven. 42 refuted. 0 times theorem prover too weak. 6754 trivial. 0 not checked. [2024-12-02 15:23:55,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:23:55,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 174 proven. 24 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:23:55,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760962610] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:23:55,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:23:55,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 6] total 13 [2024-12-02 15:23:55,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957837794] [2024-12-02 15:23:55,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:23:55,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:23:55,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:23:55,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:23:55,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:23:55,825 INFO L87 Difference]: Start difference. First operand 229521 states and 351210 transitions. Second operand has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (139), 3 states have call predecessors, (139), 5 states have return successors, (141), 4 states have call predecessors, (141), 4 states have call successors, (141) [2024-12-02 15:24:09,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:09,957 INFO L93 Difference]: Finished difference Result 389142 states and 591163 transitions. [2024-12-02 15:24:09,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 15:24:09,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (139), 3 states have call predecessors, (139), 5 states have return successors, (141), 4 states have call predecessors, (141), 4 states have call successors, (141) Word has length 467 [2024-12-02 15:24:09,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:10,463 INFO L225 Difference]: With dead ends: 389142 [2024-12-02 15:24:10,463 INFO L226 Difference]: Without dead ends: 159624 [2024-12-02 15:24:10,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 969 GetRequests, 932 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:24:10,647 INFO L435 NwaCegarLoop]: 527 mSDtfsCounter, 1766 mSDsluCounter, 1432 mSDsCounter, 0 mSdLazyCounter, 1317 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1767 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 1871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 1317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:10,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1767 Valid, 1959 Invalid, 1871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 1317 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 15:24:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159624 states. [2024-12-02 15:24:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159624 to 157926. [2024-12-02 15:24:22,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157926 states, 132775 states have (on average 1.44582187911881) internal successors, (191969), 133126 states have internal predecessors, (191969), 22120 states have call successors, (22120), 3030 states have call predecessors, (22120), 3030 states have return successors, (22120), 21769 states have call predecessors, (22120), 22120 states have call successors, (22120) [2024-12-02 15:24:23,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157926 states to 157926 states and 236209 transitions. [2024-12-02 15:24:23,417 INFO L78 Accepts]: Start accepts. Automaton has 157926 states and 236209 transitions. Word has length 467 [2024-12-02 15:24:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:23,417 INFO L471 AbstractCegarLoop]: Abstraction has 157926 states and 236209 transitions. [2024-12-02 15:24:23,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 18.46153846153846) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (139), 3 states have call predecessors, (139), 5 states have return successors, (141), 4 states have call predecessors, (141), 4 states have call successors, (141) [2024-12-02 15:24:23,418 INFO L276 IsEmpty]: Start isEmpty. Operand 157926 states and 236209 transitions. [2024-12-02 15:24:23,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-12-02 15:24:23,431 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:23,431 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:23,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 15:24:23,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:24:23,632 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:23,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:23,632 INFO L85 PathProgramCache]: Analyzing trace with hash -647002383, now seen corresponding path program 1 times [2024-12-02 15:24:23,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:23,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546230295] [2024-12-02 15:24:23,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:23,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:23,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:24,987 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:24:24,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:24,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546230295] [2024-12-02 15:24:24,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546230295] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:24,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:24,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:24:24,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504712877] [2024-12-02 15:24:24,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:24,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:24:24,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:24,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:24:24,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:24:24,988 INFO L87 Difference]: Start difference. First operand 157926 states and 236209 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:24:40,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:24:40,910 INFO L93 Difference]: Finished difference Result 358066 states and 533122 transitions. [2024-12-02 15:24:40,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:24:40,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 470 [2024-12-02 15:24:40,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:24:41,379 INFO L225 Difference]: With dead ends: 358066 [2024-12-02 15:24:41,380 INFO L226 Difference]: Without dead ends: 200268 [2024-12-02 15:24:41,556 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:24:41,557 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 1342 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 2374 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:24:41,557 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 2374 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 15:24:41,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200268 states. [2024-12-02 15:24:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200268 to 164770. [2024-12-02 15:24:53,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164770 states, 139619 states have (on average 1.4527535650591967) internal successors, (202832), 139970 states have internal predecessors, (202832), 22120 states have call successors, (22120), 3030 states have call predecessors, (22120), 3030 states have return successors, (22120), 21769 states have call predecessors, (22120), 22120 states have call successors, (22120) [2024-12-02 15:24:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164770 states to 164770 states and 247072 transitions. [2024-12-02 15:24:53,776 INFO L78 Accepts]: Start accepts. Automaton has 164770 states and 247072 transitions. Word has length 470 [2024-12-02 15:24:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:24:53,777 INFO L471 AbstractCegarLoop]: Abstraction has 164770 states and 247072 transitions. [2024-12-02 15:24:53,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:24:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 164770 states and 247072 transitions. [2024-12-02 15:24:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-12-02 15:24:53,798 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:24:53,798 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:24:53,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 15:24:53,798 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:24:53,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:24:53,799 INFO L85 PathProgramCache]: Analyzing trace with hash 874434895, now seen corresponding path program 1 times [2024-12-02 15:24:53,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:24:53,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721607274] [2024-12-02 15:24:53,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:24:53,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:24:54,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:24:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:24:54,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:24:54,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721607274] [2024-12-02 15:24:54,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721607274] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:24:54,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:24:54,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 15:24:54,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557381301] [2024-12-02 15:24:54,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:24:54,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 15:24:54,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:24:54,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 15:24:54,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:24:54,732 INFO L87 Difference]: Start difference. First operand 164770 states and 247072 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:25:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:15,958 INFO L93 Difference]: Finished difference Result 426028 states and 634353 transitions. [2024-12-02 15:25:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:25:15,958 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 470 [2024-12-02 15:25:15,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:16,737 INFO L225 Difference]: With dead ends: 426028 [2024-12-02 15:25:16,737 INFO L226 Difference]: Without dead ends: 310130 [2024-12-02 15:25:16,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:25:16,864 INFO L435 NwaCegarLoop]: 612 mSDtfsCounter, 1315 mSDsluCounter, 3246 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 3858 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:16,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 3858 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:25:17,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310130 states. [2024-12-02 15:25:33,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310130 to 205182. [2024-12-02 15:25:33,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205182 states, 173595 states have (on average 1.4518217690601687) internal successors, (252029), 174050 states have internal predecessors, (252029), 27784 states have call successors, (27784), 3802 states have call predecessors, (27784), 3802 states have return successors, (27784), 27329 states have call predecessors, (27784), 27784 states have call successors, (27784) [2024-12-02 15:25:34,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205182 states to 205182 states and 307597 transitions. [2024-12-02 15:25:34,206 INFO L78 Accepts]: Start accepts. Automaton has 205182 states and 307597 transitions. Word has length 470 [2024-12-02 15:25:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:25:34,207 INFO L471 AbstractCegarLoop]: Abstraction has 205182 states and 307597 transitions. [2024-12-02 15:25:34,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:25:34,207 INFO L276 IsEmpty]: Start isEmpty. Operand 205182 states and 307597 transitions. [2024-12-02 15:25:34,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2024-12-02 15:25:34,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:25:34,219 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:25:34,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 15:25:34,219 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:25:34,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:25:34,220 INFO L85 PathProgramCache]: Analyzing trace with hash 936474509, now seen corresponding path program 1 times [2024-12-02 15:25:34,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:25:34,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535571447] [2024-12-02 15:25:34,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:25:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:25:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:25:40,631 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:25:40,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:25:40,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535571447] [2024-12-02 15:25:40,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535571447] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:25:40,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:25:40,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:25:40,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366041431] [2024-12-02 15:25:40,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:25:40,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:25:40,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:25:40,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:25:40,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:25:40,633 INFO L87 Difference]: Start difference. First operand 205182 states and 307597 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:25:58,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:25:58,319 INFO L93 Difference]: Finished difference Result 410238 states and 615017 transitions. [2024-12-02 15:25:58,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:25:58,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 470 [2024-12-02 15:25:58,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:25:58,968 INFO L225 Difference]: With dead ends: 410238 [2024-12-02 15:25:58,968 INFO L226 Difference]: Without dead ends: 205184 [2024-12-02 15:25:59,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-12-02 15:25:59,210 INFO L435 NwaCegarLoop]: 971 mSDtfsCounter, 420 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 2770 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-12-02 15:25:59,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 2770 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-12-02 15:25:59,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205184 states. [2024-12-02 15:26:16,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205184 to 205182. [2024-12-02 15:26:16,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205182 states, 173595 states have (on average 1.4505544514530948) internal successors, (251809), 174050 states have internal predecessors, (251809), 27784 states have call successors, (27784), 3802 states have call predecessors, (27784), 3802 states have return successors, (27784), 27329 states have call predecessors, (27784), 27784 states have call successors, (27784) [2024-12-02 15:26:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205182 states to 205182 states and 307377 transitions. [2024-12-02 15:26:17,293 INFO L78 Accepts]: Start accepts. Automaton has 205182 states and 307377 transitions. Word has length 470 [2024-12-02 15:26:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:26:17,294 INFO L471 AbstractCegarLoop]: Abstraction has 205182 states and 307377 transitions. [2024-12-02 15:26:17,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:26:17,294 INFO L276 IsEmpty]: Start isEmpty. Operand 205182 states and 307377 transitions. [2024-12-02 15:26:17,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2024-12-02 15:26:17,312 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:26:17,312 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:26:17,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 15:26:17,313 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:26:17,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:26:17,313 INFO L85 PathProgramCache]: Analyzing trace with hash 25618151, now seen corresponding path program 1 times [2024-12-02 15:26:17,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:26:17,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429002171] [2024-12-02 15:26:17,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:17,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:26:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:19,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 72 proven. 126 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:26:19,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:26:19,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429002171] [2024-12-02 15:26:19,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429002171] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:26:19,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548148088] [2024-12-02 15:26:19,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:26:19,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:26:19,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:26:19,343 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:26:19,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:26:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:26:19,756 INFO L256 TraceCheckSpWp]: Trace formula consists of 1134 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-12-02 15:26:19,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:26:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2430 proven. 54 refuted. 0 times theorem prover too weak. 6360 trivial. 0 not checked. [2024-12-02 15:26:19,962 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:26:20,254 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 168 proven. 30 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:26:20,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548148088] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:26:20,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:26:20,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 17 [2024-12-02 15:26:20,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051275811] [2024-12-02 15:26:20,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:26:20,256 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 15:26:20,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:26:20,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 15:26:20,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:26:20,257 INFO L87 Difference]: Start difference. First operand 205182 states and 307377 transitions. Second operand has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 17 states have internal predecessors, (271), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) [2024-12-02 15:27:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:27:05,838 INFO L93 Difference]: Finished difference Result 691720 states and 1012738 transitions. [2024-12-02 15:27:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-12-02 15:27:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 17 states have internal predecessors, (271), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) Word has length 474 [2024-12-02 15:27:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:27:07,168 INFO L225 Difference]: With dead ends: 691720 [2024-12-02 15:27:07,169 INFO L226 Difference]: Without dead ends: 486666 [2024-12-02 15:27:07,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1025 GetRequests, 952 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1739 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1040, Invalid=4216, Unknown=0, NotChecked=0, Total=5256 [2024-12-02 15:27:07,499 INFO L435 NwaCegarLoop]: 781 mSDtfsCounter, 4558 mSDsluCounter, 4427 mSDsCounter, 0 mSdLazyCounter, 3012 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 5208 SdHoareTripleChecker+Invalid, 4169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 3012 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:27:07,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 5208 Invalid, 4169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 3012 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-12-02 15:27:07,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486666 states. [2024-12-02 15:27:23,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486666 to 108285. [2024-12-02 15:27:23,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108285 states, 91164 states have (on average 1.4395704444736959) internal successors, (131237), 91321 states have internal predecessors, (131237), 14553 states have call successors, (14553), 2567 states have call predecessors, (14553), 2567 states have return successors, (14553), 14396 states have call predecessors, (14553), 14553 states have call successors, (14553) [2024-12-02 15:27:23,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108285 states to 108285 states and 160343 transitions. [2024-12-02 15:27:23,852 INFO L78 Accepts]: Start accepts. Automaton has 108285 states and 160343 transitions. Word has length 474 [2024-12-02 15:27:23,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:27:23,852 INFO L471 AbstractCegarLoop]: Abstraction has 108285 states and 160343 transitions. [2024-12-02 15:27:23,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 17 states have internal predecessors, (271), 5 states have call successors, (129), 3 states have call predecessors, (129), 5 states have return successors, (130), 5 states have call predecessors, (130), 5 states have call successors, (130) [2024-12-02 15:27:23,853 INFO L276 IsEmpty]: Start isEmpty. Operand 108285 states and 160343 transitions. [2024-12-02 15:27:23,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-12-02 15:27:23,862 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:27:23,862 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:27:23,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 15:27:24,062 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 15:27:24,062 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:27:24,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:27:24,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1412616061, now seen corresponding path program 1 times [2024-12-02 15:27:24,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:27:24,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356187239] [2024-12-02 15:27:24,063 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:27:24,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:27:24,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:27:25,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked. [2024-12-02 15:27:25,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:27:25,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356187239] [2024-12-02 15:27:25,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356187239] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:27:25,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:27:25,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 15:27:25,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022217028] [2024-12-02 15:27:25,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:27:25,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:27:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:27:25,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:27:25,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:27:25,304 INFO L87 Difference]: Start difference. First operand 108285 states and 160343 transitions. Second operand has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:27:46,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:27:46,019 INFO L93 Difference]: Finished difference Result 272154 states and 403601 transitions. [2024-12-02 15:27:46,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:27:46,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 475 [2024-12-02 15:27:46,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:27:46,392 INFO L225 Difference]: With dead ends: 272154 [2024-12-02 15:27:46,392 INFO L226 Difference]: Without dead ends: 173629 [2024-12-02 15:27:46,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-12-02 15:27:46,491 INFO L435 NwaCegarLoop]: 741 mSDtfsCounter, 1006 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 15:27:46,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1006 Valid, 2289 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 15:27:46,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173629 states. [2024-12-02 15:27:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173629 to 93818. [2024-12-02 15:27:59,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93818 states, 79537 states have (on average 1.4507839118900638) internal successors, (115391), 79626 states have internal predecessors, (115391), 12061 states have call successors, (12061), 2219 states have call predecessors, (12061), 2219 states have return successors, (12061), 11972 states have call predecessors, (12061), 12061 states have call successors, (12061) [2024-12-02 15:28:00,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93818 states to 93818 states and 139513 transitions. [2024-12-02 15:28:00,156 INFO L78 Accepts]: Start accepts. Automaton has 93818 states and 139513 transitions. Word has length 475 [2024-12-02 15:28:00,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:28:00,157 INFO L471 AbstractCegarLoop]: Abstraction has 93818 states and 139513 transitions. [2024-12-02 15:28:00,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.6) internal successors, (143), 5 states have internal predecessors, (143), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) [2024-12-02 15:28:00,157 INFO L276 IsEmpty]: Start isEmpty. Operand 93818 states and 139513 transitions. [2024-12-02 15:28:00,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-12-02 15:28:00,169 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:28:00,169 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:28:00,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-12-02 15:28:00,169 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:28:00,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:28:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -681985317, now seen corresponding path program 1 times [2024-12-02 15:28:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:28:00,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324733474] [2024-12-02 15:28:00,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:00,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:28:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 165 proven. 33 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked. [2024-12-02 15:28:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:28:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324733474] [2024-12-02 15:28:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324733474] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:28:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869439370] [2024-12-02 15:28:01,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:28:01,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:28:01,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:28:01,638 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:28:01,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:28:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:28:02,001 INFO L256 TraceCheckSpWp]: Trace formula consists of 1135 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 15:28:02,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:28:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 2074 proven. 39 refuted. 0 times theorem prover too weak. 6731 trivial. 0 not checked. [2024-12-02 15:28:02,748 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:28:03,483 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 351 proven. 42 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2024-12-02 15:28:03,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869439370] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:28:03,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:28:03,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 12] total 27 [2024-12-02 15:28:03,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710692135] [2024-12-02 15:28:03,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:28:03,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-12-02 15:28:03,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:28:03,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-12-02 15:28:03,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2024-12-02 15:28:03,486 INFO L87 Difference]: Start difference. First operand 93818 states and 139513 transitions. Second operand has 27 states, 27 states have (on average 10.37037037037037) internal successors, (280), 27 states have internal predecessors, (280), 7 states have call successors, (145), 4 states have call predecessors, (145), 9 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) [2024-12-02 15:28:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:28:51,622 INFO L93 Difference]: Finished difference Result 349124 states and 520985 transitions. [2024-12-02 15:28:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 258 states. [2024-12-02 15:28:51,623 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 10.37037037037037) internal successors, (280), 27 states have internal predecessors, (280), 7 states have call successors, (145), 4 states have call predecessors, (145), 9 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) Word has length 475 [2024-12-02 15:28:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:28:52,272 INFO L225 Difference]: With dead ends: 349124 [2024-12-02 15:28:52,272 INFO L226 Difference]: Without dead ends: 248637 [2024-12-02 15:28:52,380 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1232 GetRequests, 961 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34461 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=9957, Invalid=64299, Unknown=0, NotChecked=0, Total=74256 [2024-12-02 15:28:52,380 INFO L435 NwaCegarLoop]: 2474 mSDtfsCounter, 20329 mSDsluCounter, 21278 mSDsCounter, 0 mSdLazyCounter, 10101 mSolverCounterSat, 5025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20447 SdHoareTripleChecker+Valid, 23752 SdHoareTripleChecker+Invalid, 15126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5025 IncrementalHoareTripleChecker+Valid, 10101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:28:52,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20447 Valid, 23752 Invalid, 15126 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5025 Valid, 10101 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-12-02 15:28:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248637 states. [2024-12-02 15:29:06,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248637 to 108671. [2024-12-02 15:29:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108671 states, 94280 states have (on average 1.4562367416207043) internal successors, (137294), 94353 states have internal predecessors, (137294), 11827 states have call successors, (11827), 2563 states have call predecessors, (11827), 2563 states have return successors, (11827), 11754 states have call predecessors, (11827), 11827 states have call successors, (11827) [2024-12-02 15:29:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108671 states to 108671 states and 160948 transitions. [2024-12-02 15:29:06,724 INFO L78 Accepts]: Start accepts. Automaton has 108671 states and 160948 transitions. Word has length 475 [2024-12-02 15:29:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:06,724 INFO L471 AbstractCegarLoop]: Abstraction has 108671 states and 160948 transitions. [2024-12-02 15:29:06,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 10.37037037037037) internal successors, (280), 27 states have internal predecessors, (280), 7 states have call successors, (145), 4 states have call predecessors, (145), 9 states have return successors, (146), 7 states have call predecessors, (146), 7 states have call successors, (146) [2024-12-02 15:29:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 108671 states and 160948 transitions. [2024-12-02 15:29:06,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-12-02 15:29:06,736 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:06,736 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:29:06,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 15:29:06,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 15:29:06,937 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:06,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:06,937 INFO L85 PathProgramCache]: Analyzing trace with hash -592782986, now seen corresponding path program 1 times [2024-12-02 15:29:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:06,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422689609] [2024-12-02 15:29:06,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:06,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 330 proven. 426 refuted. 0 times theorem prover too weak. 8088 trivial. 0 not checked. [2024-12-02 15:29:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422689609] [2024-12-02 15:29:09,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422689609] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:09,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155295119] [2024-12-02 15:29:09,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:09,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:09,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:09,601 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:09,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:29:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:10,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-12-02 15:29:10,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:11,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 4044 proven. 321 refuted. 0 times theorem prover too weak. 4479 trivial. 0 not checked. [2024-12-02 15:29:11,307 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:29:12,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 69 proven. 324 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked. [2024-12-02 15:29:12,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155295119] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:29:12,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:29:12,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 26 [2024-12-02 15:29:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030521847] [2024-12-02 15:29:12,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:29:12,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:29:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:12,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:29:12,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=560, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:29:12,942 INFO L87 Difference]: Start difference. First operand 108671 states and 160948 transitions. Second operand has 26 states, 25 states have (on average 14.96) internal successors, (374), 26 states have internal predecessors, (374), 11 states have call successors, (200), 3 states have call predecessors, (200), 7 states have return successors, (201), 9 states have call predecessors, (201), 11 states have call successors, (201) [2024-12-02 15:29:45,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:45,640 INFO L93 Difference]: Finished difference Result 280470 states and 405762 transitions. [2024-12-02 15:29:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-12-02 15:29:45,641 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 14.96) internal successors, (374), 26 states have internal predecessors, (374), 11 states have call successors, (200), 3 states have call predecessors, (200), 7 states have return successors, (201), 9 states have call predecessors, (201), 11 states have call successors, (201) Word has length 475 [2024-12-02 15:29:45,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:46,147 INFO L225 Difference]: With dead ends: 280470 [2024-12-02 15:29:46,147 INFO L226 Difference]: Without dead ends: 171802 [2024-12-02 15:29:46,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1064 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3255 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1911, Invalid=9431, Unknown=0, NotChecked=0, Total=11342 [2024-12-02 15:29:46,248 INFO L435 NwaCegarLoop]: 575 mSDtfsCounter, 9171 mSDsluCounter, 4859 mSDsCounter, 0 mSdLazyCounter, 4597 mSolverCounterSat, 1276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9173 SdHoareTripleChecker+Valid, 5434 SdHoareTripleChecker+Invalid, 5873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1276 IncrementalHoareTripleChecker+Valid, 4597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:46,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9173 Valid, 5434 Invalid, 5873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1276 Valid, 4597 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-12-02 15:29:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171802 states. [2024-12-02 15:30:11,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171802 to 137293. [2024-12-02 15:30:11,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137293 states, 114734 states have (on average 1.381220910976694) internal successors, (158473), 115092 states have internal predecessors, (158473), 17866 states have call successors, (17866), 4692 states have call predecessors, (17866), 4692 states have return successors, (17866), 17508 states have call predecessors, (17866), 17866 states have call successors, (17866) [2024-12-02 15:30:11,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137293 states to 137293 states and 194205 transitions. [2024-12-02 15:30:12,376 INFO L78 Accepts]: Start accepts. Automaton has 137293 states and 194205 transitions. Word has length 475 [2024-12-02 15:30:12,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:12,377 INFO L471 AbstractCegarLoop]: Abstraction has 137293 states and 194205 transitions. [2024-12-02 15:30:12,377 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 14.96) internal successors, (374), 26 states have internal predecessors, (374), 11 states have call successors, (200), 3 states have call predecessors, (200), 7 states have return successors, (201), 9 states have call predecessors, (201), 11 states have call successors, (201) [2024-12-02 15:30:12,377 INFO L276 IsEmpty]: Start isEmpty. Operand 137293 states and 194205 transitions. [2024-12-02 15:30:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2024-12-02 15:30:12,394 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:12,394 INFO L218 NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:30:12,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 15:30:12,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:30:12,595 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:12,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:12,596 INFO L85 PathProgramCache]: Analyzing trace with hash 877843849, now seen corresponding path program 1 times [2024-12-02 15:30:12,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:12,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722280087] [2024-12-02 15:30:12,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:12,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:15,462 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 225 proven. 531 refuted. 0 times theorem prover too weak. 8088 trivial. 0 not checked. [2024-12-02 15:30:15,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722280087] [2024-12-02 15:30:15,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722280087] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:15,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434829852] [2024-12-02 15:30:15,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:15,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:15,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:15,464 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:15,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1bfe29fa-3ebb-4eb8-ad58-1f402ac62880/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:30:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:15,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1129 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 15:30:15,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:30:21,437 INFO L134 CoverageAnalysis]: Checked inductivity of 8844 backedges. 3823 proven. 105 refuted. 0 times theorem prover too weak. 4916 trivial. 0 not checked. [2024-12-02 15:30:21,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:30:23,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434829852] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:23,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 15:30:23,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 24 [2024-12-02 15:30:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721195544] [2024-12-02 15:30:23,425 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 15:30:23,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 15:30:23,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:23,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 15:30:23,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=930, Unknown=1, NotChecked=0, Total=1056 [2024-12-02 15:30:23,427 INFO L87 Difference]: Start difference. First operand 137293 states and 194205 transitions. Second operand has 24 states, 23 states have (on average 10.565217391304348) internal successors, (243), 23 states have internal predecessors, (243), 10 states have call successors, (130), 3 states have call predecessors, (130), 5 states have return successors, (131), 9 states have call predecessors, (131), 10 states have call successors, (131) [2024-12-02 15:30:33,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:30:37,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:30:42,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:30:46,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:30:52,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:01,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:09,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:13,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:17,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:22,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:26,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:30,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.58s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:34,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:38,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:42,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:46,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:51,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:55,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:31:59,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:03,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:07,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:11,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:16,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:20,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:24,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:28,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2024-12-02 15:32:32,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0]