./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem11_label02.c --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_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem11_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30f62f9fddfecd916215dd8f1b75b140359bb989ba38a829add2eea4e4b271dc --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:31:22,448 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:31:22,552 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:31:22,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:31:22,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:31:22,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:31:22,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:31:22,605 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:31:22,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:31:22,606 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:31:22,607 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:31:22,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:31:22,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:31:22,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:31:22,609 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:31:22,609 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:31:22,609 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:31:22,609 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:31:22,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:31:22,610 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:31:22,610 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:31:22,611 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:31:22,612 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:31:22,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:31:22,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:31:22,613 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:31:22,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:31:22,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:31:22,614 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_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30f62f9fddfecd916215dd8f1b75b140359bb989ba38a829add2eea4e4b271dc [2024-11-28 03:31:22,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:31:22,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:31:22,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:31:22,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:31:22,952 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:31:22,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem11_label02.c [2024-11-28 03:31:26,182 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/data/7f4675038/8afb7f6b517d49baa3f6bfd411076b0b/FLAGdca62d609 [2024-11-28 03:31:26,568 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:31:26,569 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/sv-benchmarks/c/eca-rers2012/Problem11_label02.c [2024-11-28 03:31:26,585 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/data/7f4675038/8afb7f6b517d49baa3f6bfd411076b0b/FLAGdca62d609 [2024-11-28 03:31:26,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/data/7f4675038/8afb7f6b517d49baa3f6bfd411076b0b [2024-11-28 03:31:26,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:31:26,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:31:26,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:31:26,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:31:26,628 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:31:26,629 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:31:26" (1/1) ... [2024-11-28 03:31:26,631 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a4e9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:26, skipping insertion in model container [2024-11-28 03:31:26,632 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:31:26" (1/1) ... [2024-11-28 03:31:26,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:31:27,027 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_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/sv-benchmarks/c/eca-rers2012/Problem11_label02.c[7865,7878] [2024-11-28 03:31:27,413 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:31:27,425 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:31:27,471 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_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/sv-benchmarks/c/eca-rers2012/Problem11_label02.c[7865,7878] [2024-11-28 03:31:27,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:31:27,650 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:31:27,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27 WrapperNode [2024-11-28 03:31:27,651 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:31:27,653 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:31:27,653 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:31:27,653 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:31:27,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,700 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,880 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 999 [2024-11-28 03:31:27,880 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:31:27,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:31:27,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:31:27,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:31:27,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,909 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,985 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:31:27,986 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:27,986 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,053 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,063 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,080 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,107 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:31:28,128 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:31:28,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:31:28,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:31:28,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (1/1) ... [2024-11-28 03:31:28,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:31:28,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:28,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:31:28,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:31:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:31:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:31:28,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:31:28,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:31:28,306 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:31:28,308 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:31:31,138 INFO L? ?]: Removed 129 outVars from TransFormulas that were not future-live. [2024-11-28 03:31:31,139 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:31:31,158 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:31:31,158 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 03:31:31,159 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:31:31 BoogieIcfgContainer [2024-11-28 03:31:31,159 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:31:31,161 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:31:31,161 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:31:31,167 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:31:31,167 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:31:26" (1/3) ... [2024-11-28 03:31:31,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:31:31, skipping insertion in model container [2024-11-28 03:31:31,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:31:27" (2/3) ... [2024-11-28 03:31:31,168 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cee192e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:31:31, skipping insertion in model container [2024-11-28 03:31:31,168 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:31:31" (3/3) ... [2024-11-28 03:31:31,170 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem11_label02.c [2024-11-28 03:31:31,189 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:31:31,190 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem11_label02.c that has 1 procedures, 283 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 03:31:31,264 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:31:31,281 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;@ae76927, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:31:31,281 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:31:31,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 03:31:31,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:31,297 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:31,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:31,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1425694346, now seen corresponding path program 1 times [2024-11-28 03:31:31,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:31,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564125750] [2024-11-28 03:31:31,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:31,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:31,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:31,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:31,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564125750] [2024-11-28 03:31:31,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564125750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:31,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:31,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:31:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329236832] [2024-11-28 03:31:31,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:31,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:31,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:31,812 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:31,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:31,816 INFO L87 Difference]: Start difference. First operand has 283 states, 281 states have (on average 1.7153024911032029) internal successors, (482), 282 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:33,451 INFO L93 Difference]: Finished difference Result 769 states and 1360 transitions. [2024-11-28 03:31:33,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:33,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 03:31:33,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:33,467 INFO L225 Difference]: With dead ends: 769 [2024-11-28 03:31:33,467 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 03:31:33,471 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:33,474 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 186 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:33,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 163 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:31:33,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 03:31:33,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 412. [2024-11-28 03:31:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 411 states have (on average 1.5231143552311435) internal successors, (626), 411 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:33,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 626 transitions. [2024-11-28 03:31:33,565 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 626 transitions. Word has length 54 [2024-11-28 03:31:33,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:33,566 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 626 transitions. [2024-11-28 03:31:33,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 626 transitions. [2024-11-28 03:31:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-28 03:31:33,573 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:33,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:33,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:31:33,576 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:33,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 808427271, now seen corresponding path program 1 times [2024-11-28 03:31:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:33,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653139882] [2024-11-28 03:31:33,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:33,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:33,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653139882] [2024-11-28 03:31:33,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653139882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:33,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:33,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:31:33,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052785907] [2024-11-28 03:31:33,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:33,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:33,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:33,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:33,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:33,903 INFO L87 Difference]: Start difference. First operand 412 states and 626 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:35,292 INFO L93 Difference]: Finished difference Result 1194 states and 1821 transitions. [2024-11-28 03:31:35,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:35,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 120 [2024-11-28 03:31:35,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:35,304 INFO L225 Difference]: With dead ends: 1194 [2024-11-28 03:31:35,304 INFO L226 Difference]: Without dead ends: 784 [2024-11-28 03:31:35,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:35,307 INFO L435 NwaCegarLoop]: 130 mSDtfsCounter, 175 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:35,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 154 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:31:35,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2024-11-28 03:31:35,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 784. [2024-11-28 03:31:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 783 states have (on average 1.3742017879948913) internal successors, (1076), 783 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1076 transitions. [2024-11-28 03:31:35,377 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1076 transitions. Word has length 120 [2024-11-28 03:31:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:35,378 INFO L471 AbstractCegarLoop]: Abstraction has 784 states and 1076 transitions. [2024-11-28 03:31:35,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1076 transitions. [2024-11-28 03:31:35,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 03:31:35,385 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:35,385 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:35,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:31:35,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:35,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:35,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1746590275, now seen corresponding path program 1 times [2024-11-28 03:31:35,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:35,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739806546] [2024-11-28 03:31:35,387 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:35,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:36,039 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739806546] [2024-11-28 03:31:36,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739806546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:36,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:36,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:31:36,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372219973] [2024-11-28 03:31:36,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:36,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:36,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:36,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:36,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:36,047 INFO L87 Difference]: Start difference. First operand 784 states and 1076 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:37,229 INFO L93 Difference]: Finished difference Result 1936 states and 2599 transitions. [2024-11-28 03:31:37,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:37,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2024-11-28 03:31:37,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:37,237 INFO L225 Difference]: With dead ends: 1936 [2024-11-28 03:31:37,237 INFO L226 Difference]: Without dead ends: 1154 [2024-11-28 03:31:37,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:37,240 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 119 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:37,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 190 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:31:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2024-11-28 03:31:37,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1153. [2024-11-28 03:31:37,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 1152 states have (on average 1.2699652777777777) internal successors, (1463), 1152 states have internal predecessors, (1463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1463 transitions. [2024-11-28 03:31:37,308 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1463 transitions. Word has length 124 [2024-11-28 03:31:37,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:37,309 INFO L471 AbstractCegarLoop]: Abstraction has 1153 states and 1463 transitions. [2024-11-28 03:31:37,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 2 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1463 transitions. [2024-11-28 03:31:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:31:37,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:37,313 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:37,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:31:37,313 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:37,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:37,314 INFO L85 PathProgramCache]: Analyzing trace with hash -948152282, now seen corresponding path program 1 times [2024-11-28 03:31:37,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:37,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551263627] [2024-11-28 03:31:37,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:37,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:31:37,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:37,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551263627] [2024-11-28 03:31:37,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551263627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:37,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:37,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:31:37,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359065889] [2024-11-28 03:31:37,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:37,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:37,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:37,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:37,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:37,820 INFO L87 Difference]: Start difference. First operand 1153 states and 1463 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:39,037 INFO L93 Difference]: Finished difference Result 2494 states and 3189 transitions. [2024-11-28 03:31:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:39,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 166 [2024-11-28 03:31:39,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:39,046 INFO L225 Difference]: With dead ends: 2494 [2024-11-28 03:31:39,046 INFO L226 Difference]: Without dead ends: 1527 [2024-11-28 03:31:39,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:39,050 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 106 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:39,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 154 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:31:39,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2024-11-28 03:31:39,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1526. [2024-11-28 03:31:39,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1525 states have (on average 1.2557377049180327) internal successors, (1915), 1525 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:39,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 1915 transitions. [2024-11-28 03:31:39,112 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 1915 transitions. Word has length 166 [2024-11-28 03:31:39,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:39,113 INFO L471 AbstractCegarLoop]: Abstraction has 1526 states and 1915 transitions. [2024-11-28 03:31:39,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:39,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 1915 transitions. [2024-11-28 03:31:39,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-28 03:31:39,116 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:39,116 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:39,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:31:39,117 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:39,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:39,118 INFO L85 PathProgramCache]: Analyzing trace with hash -728761857, now seen corresponding path program 1 times [2024-11-28 03:31:39,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:39,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251167938] [2024-11-28 03:31:39,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:39,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:39,468 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:39,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:39,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251167938] [2024-11-28 03:31:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251167938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:39,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:39,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:31:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190586493] [2024-11-28 03:31:39,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:39,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:39,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:39,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:39,472 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:39,473 INFO L87 Difference]: Start difference. First operand 1526 states and 1915 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:40,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:40,636 INFO L93 Difference]: Finished difference Result 2864 states and 3636 transitions. [2024-11-28 03:31:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:40,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2024-11-28 03:31:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:40,643 INFO L225 Difference]: With dead ends: 2864 [2024-11-28 03:31:40,643 INFO L226 Difference]: Without dead ends: 1524 [2024-11-28 03:31:40,645 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:40,646 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 181 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:40,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 306 Invalid, 603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 552 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 03:31:40,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-28 03:31:40,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1524. [2024-11-28 03:31:40,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 1523 states have (on average 1.2107682206172028) internal successors, (1844), 1523 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1844 transitions. [2024-11-28 03:31:40,684 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1844 transitions. Word has length 181 [2024-11-28 03:31:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:40,685 INFO L471 AbstractCegarLoop]: Abstraction has 1524 states and 1844 transitions. [2024-11-28 03:31:40,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1844 transitions. [2024-11-28 03:31:40,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2024-11-28 03:31:40,690 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:40,690 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:40,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:31:40,691 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:40,691 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:40,692 INFO L85 PathProgramCache]: Analyzing trace with hash -845047207, now seen corresponding path program 1 times [2024-11-28 03:31:40,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:40,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604490365] [2024-11-28 03:31:40,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:40,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:41,124 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-28 03:31:41,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:41,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604490365] [2024-11-28 03:31:41,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604490365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:41,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:41,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:31:41,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846759959] [2024-11-28 03:31:41,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:41,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:41,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:41,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:41,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:41,130 INFO L87 Difference]: Start difference. First operand 1524 states and 1844 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:42,461 INFO L93 Difference]: Finished difference Result 3603 states and 4427 transitions. [2024-11-28 03:31:42,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:42,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 236 [2024-11-28 03:31:42,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:42,471 INFO L225 Difference]: With dead ends: 3603 [2024-11-28 03:31:42,471 INFO L226 Difference]: Without dead ends: 2265 [2024-11-28 03:31:42,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:42,474 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 143 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:42,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 386 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 03:31:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2024-11-28 03:31:42,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2076. [2024-11-28 03:31:42,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.192289156626506) internal successors, (2474), 2075 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2474 transitions. [2024-11-28 03:31:42,524 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2474 transitions. Word has length 236 [2024-11-28 03:31:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:42,525 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2474 transitions. [2024-11-28 03:31:42,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:42,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2474 transitions. [2024-11-28 03:31:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2024-11-28 03:31:42,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:42,530 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:42,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:31:42,530 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:42,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:42,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1327280490, now seen corresponding path program 1 times [2024-11-28 03:31:42,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:42,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649489007] [2024-11-28 03:31:42,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:42,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:42,865 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 03:31:42,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:42,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649489007] [2024-11-28 03:31:42,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649489007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:42,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:42,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:31:42,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627598347] [2024-11-28 03:31:42,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:42,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:42,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:42,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:42,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:42,869 INFO L87 Difference]: Start difference. First operand 2076 states and 2474 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:44,180 INFO L93 Difference]: Finished difference Result 4890 states and 5877 transitions. [2024-11-28 03:31:44,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:44,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 242 [2024-11-28 03:31:44,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:44,193 INFO L225 Difference]: With dead ends: 4890 [2024-11-28 03:31:44,194 INFO L226 Difference]: Without dead ends: 2816 [2024-11-28 03:31:44,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:44,197 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 142 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:44,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 387 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:31:44,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2816 states. [2024-11-28 03:31:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2816 to 2811. [2024-11-28 03:31:44,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2811 states, 2810 states have (on average 1.1736654804270463) internal successors, (3298), 2810 states have internal predecessors, (3298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2811 states to 2811 states and 3298 transitions. [2024-11-28 03:31:44,273 INFO L78 Accepts]: Start accepts. Automaton has 2811 states and 3298 transitions. Word has length 242 [2024-11-28 03:31:44,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:44,274 INFO L471 AbstractCegarLoop]: Abstraction has 2811 states and 3298 transitions. [2024-11-28 03:31:44,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:44,274 INFO L276 IsEmpty]: Start isEmpty. Operand 2811 states and 3298 transitions. [2024-11-28 03:31:44,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-28 03:31:44,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:44,282 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:44,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:31:44,283 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:44,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:44,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1752037152, now seen corresponding path program 1 times [2024-11-28 03:31:44,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:44,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328572798] [2024-11-28 03:31:44,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:44,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 202 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:44,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328572798] [2024-11-28 03:31:44,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328572798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:44,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:44,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:31:44,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065291901] [2024-11-28 03:31:44,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:44,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:31:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:44,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:31:44,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:31:44,783 INFO L87 Difference]: Start difference. First operand 2811 states and 3298 transitions. Second operand has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:46,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:46,852 INFO L93 Difference]: Finished difference Result 8956 states and 10588 transitions. [2024-11-28 03:31:46,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:31:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 281 [2024-11-28 03:31:46,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:46,879 INFO L225 Difference]: With dead ends: 8956 [2024-11-28 03:31:46,879 INFO L226 Difference]: Without dead ends: 6147 [2024-11-28 03:31:46,883 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:31:46,884 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 284 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 1052 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 1218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:46,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 78 Invalid, 1218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1052 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:31:46,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6147 states. [2024-11-28 03:31:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6147 to 5961. [2024-11-28 03:31:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5960 states have (on average 1.1758389261744966) internal successors, (7008), 5960 states have internal predecessors, (7008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:47,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 7008 transitions. [2024-11-28 03:31:47,048 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 7008 transitions. Word has length 281 [2024-11-28 03:31:47,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:47,049 INFO L471 AbstractCegarLoop]: Abstraction has 5961 states and 7008 transitions. [2024-11-28 03:31:47,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 70.25) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:47,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 7008 transitions. [2024-11-28 03:31:47,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2024-11-28 03:31:47,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:47,059 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:47,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:31:47,059 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:47,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1184279150, now seen corresponding path program 1 times [2024-11-28 03:31:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:47,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840426451] [2024-11-28 03:31:47,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:47,387 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2024-11-28 03:31:47,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:47,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840426451] [2024-11-28 03:31:47,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840426451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:31:47,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:31:47,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:31:47,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398624999] [2024-11-28 03:31:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:31:47,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:31:47,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:47,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:31:47,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:47,391 INFO L87 Difference]: Start difference. First operand 5961 states and 7008 transitions. Second operand has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:48,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:31:48,372 INFO L93 Difference]: Finished difference Result 12099 states and 14259 transitions. [2024-11-28 03:31:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:31:48,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2024-11-28 03:31:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:31:48,399 INFO L225 Difference]: With dead ends: 12099 [2024-11-28 03:31:48,399 INFO L226 Difference]: Without dead ends: 7248 [2024-11-28 03:31:48,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:31:48,406 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 168 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:31:48,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 146 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:31:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2024-11-28 03:31:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 4664. [2024-11-28 03:31:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4664 states, 4663 states have (on average 1.1799270855672315) internal successors, (5502), 4663 states have internal predecessors, (5502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:48,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4664 states to 4664 states and 5502 transitions. [2024-11-28 03:31:48,523 INFO L78 Accepts]: Start accepts. Automaton has 4664 states and 5502 transitions. Word has length 319 [2024-11-28 03:31:48,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:31:48,524 INFO L471 AbstractCegarLoop]: Abstraction has 4664 states and 5502 transitions. [2024-11-28 03:31:48,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.333333333333336) internal successors, (169), 3 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:31:48,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4664 states and 5502 transitions. [2024-11-28 03:31:48,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-28 03:31:48,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:31:48,534 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:31:48,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 03:31:48,535 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:31:48,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:31:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1130496183, now seen corresponding path program 1 times [2024-11-28 03:31:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:31:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773609199] [2024-11-28 03:31:48,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:31:48,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:49,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:31:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773609199] [2024-11-28 03:31:49,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773609199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:31:49,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871554295] [2024-11-28 03:31:49,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:31:49,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:31:49,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:31:49,732 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:31:49,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:31:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:31:49,950 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:31:49,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:31:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:52,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:31:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 171 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:31:56,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871554295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:31:56,289 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:31:56,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 03:31:56,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479656577] [2024-11-28 03:31:56,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:31:56,291 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:31:56,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:31:56,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:31:56,293 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:31:56,294 INFO L87 Difference]: Start difference. First operand 4664 states and 5502 transitions. Second operand has 8 states, 8 states have (on average 72.5) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:00,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:00,786 INFO L93 Difference]: Finished difference Result 12139 states and 14292 transitions. [2024-11-28 03:32:00,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:32:00,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 72.5) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2024-11-28 03:32:00,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:00,808 INFO L225 Difference]: With dead ends: 12139 [2024-11-28 03:32:00,809 INFO L226 Difference]: Without dead ends: 7845 [2024-11-28 03:32:00,814 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:32:00,815 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 897 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 3057 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 3406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:00,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 190 Invalid, 3406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3057 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 03:32:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7845 states. [2024-11-28 03:32:00,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7845 to 4477. [2024-11-28 03:32:00,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 1.1735924932975872) internal successors, (5253), 4476 states have internal predecessors, (5253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 5253 transitions. [2024-11-28 03:32:00,932 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 5253 transitions. Word has length 328 [2024-11-28 03:32:00,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:00,933 INFO L471 AbstractCegarLoop]: Abstraction has 4477 states and 5253 transitions. [2024-11-28 03:32:00,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 72.5) internal successors, (580), 7 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 5253 transitions. [2024-11-28 03:32:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2024-11-28 03:32:00,943 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:00,943 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:00,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:32:01,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:32:01,144 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:01,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:01,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1345956964, now seen corresponding path program 1 times [2024-11-28 03:32:01,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:01,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401122029] [2024-11-28 03:32:01,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:01,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 188 proven. 148 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:32:02,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401122029] [2024-11-28 03:32:02,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401122029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:02,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157724169] [2024-11-28 03:32:02,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:02,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:02,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:02,575 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:02,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:32:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:02,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:32:02,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 03:32:02,944 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:02,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157724169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:02,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:02,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2024-11-28 03:32:02,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031734518] [2024-11-28 03:32:02,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:02,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:02,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:02,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:02,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:32:02,947 INFO L87 Difference]: Start difference. First operand 4477 states and 5253 transitions. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:04,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:04,002 INFO L93 Difference]: Finished difference Result 8778 states and 10330 transitions. [2024-11-28 03:32:04,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:04,003 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 348 [2024-11-28 03:32:04,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:04,017 INFO L225 Difference]: With dead ends: 8778 [2024-11-28 03:32:04,018 INFO L226 Difference]: Without dead ends: 4671 [2024-11-28 03:32:04,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:32:04,022 INFO L435 NwaCegarLoop]: 306 mSDtfsCounter, 103 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:04,022 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 324 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:32:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2024-11-28 03:32:04,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 4477. [2024-11-28 03:32:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4477 states, 4476 states have (on average 1.1427613941018766) internal successors, (5115), 4476 states have internal predecessors, (5115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:04,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4477 states to 4477 states and 5115 transitions. [2024-11-28 03:32:04,109 INFO L78 Accepts]: Start accepts. Automaton has 4477 states and 5115 transitions. Word has length 348 [2024-11-28 03:32:04,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:04,110 INFO L471 AbstractCegarLoop]: Abstraction has 4477 states and 5115 transitions. [2024-11-28 03:32:04,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 4477 states and 5115 transitions. [2024-11-28 03:32:04,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 03:32:04,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:04,122 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:04,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:32:04,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:04,323 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:04,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:04,326 INFO L85 PathProgramCache]: Analyzing trace with hash -87231958, now seen corresponding path program 1 times [2024-11-28 03:32:04,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:04,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895169942] [2024-11-28 03:32:04,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:04,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 227 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:32:04,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:04,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895169942] [2024-11-28 03:32:04,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895169942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:04,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:04,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:04,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539450634] [2024-11-28 03:32:04,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:04,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:04,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:04,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:04,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:04,786 INFO L87 Difference]: Start difference. First operand 4477 states and 5115 transitions. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:06,044 INFO L93 Difference]: Finished difference Result 11713 states and 13473 transitions. [2024-11-28 03:32:06,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:06,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2024-11-28 03:32:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:06,062 INFO L225 Difference]: With dead ends: 11713 [2024-11-28 03:32:06,062 INFO L226 Difference]: Without dead ends: 7606 [2024-11-28 03:32:06,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:06,068 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 57 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:06,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 70 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:32:06,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2024-11-28 03:32:06,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 7601. [2024-11-28 03:32:06,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7601 states, 7600 states have (on average 1.137763157894737) internal successors, (8647), 7600 states have internal predecessors, (8647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:06,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7601 states to 7601 states and 8647 transitions. [2024-11-28 03:32:06,253 INFO L78 Accepts]: Start accepts. Automaton has 7601 states and 8647 transitions. Word has length 356 [2024-11-28 03:32:06,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:06,253 INFO L471 AbstractCegarLoop]: Abstraction has 7601 states and 8647 transitions. [2024-11-28 03:32:06,254 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:06,254 INFO L276 IsEmpty]: Start isEmpty. Operand 7601 states and 8647 transitions. [2024-11-28 03:32:06,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-28 03:32:06,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:06,262 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:06,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:32:06,263 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:06,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:06,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2000820814, now seen corresponding path program 1 times [2024-11-28 03:32:06,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:06,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646672381] [2024-11-28 03:32:06,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:06,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-28 03:32:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646672381] [2024-11-28 03:32:07,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646672381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:07,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708498495] [2024-11-28 03:32:07,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:07,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:07,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:07,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:07,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:32:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:07,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:32:07,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 103 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-28 03:32:08,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-28 03:32:10,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708498495] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:10,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:32:10,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-28 03:32:10,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546383130] [2024-11-28 03:32:10,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:10,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:10,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:10,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:10,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:10,949 INFO L87 Difference]: Start difference. First operand 7601 states and 8647 transitions. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:12,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:12,251 INFO L93 Difference]: Finished difference Result 17036 states and 19446 transitions. [2024-11-28 03:32:12,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:12,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 359 [2024-11-28 03:32:12,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:12,275 INFO L225 Difference]: With dead ends: 17036 [2024-11-28 03:32:12,275 INFO L226 Difference]: Without dead ends: 9805 [2024-11-28 03:32:12,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 719 GetRequests, 715 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:32:12,285 INFO L435 NwaCegarLoop]: 102 mSDtfsCounter, 174 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:12,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 119 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:32:12,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2024-11-28 03:32:12,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 7964. [2024-11-28 03:32:12,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7964 states, 7963 states have (on average 1.1312319477583825) internal successors, (9008), 7963 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:12,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7964 states to 7964 states and 9008 transitions. [2024-11-28 03:32:12,470 INFO L78 Accepts]: Start accepts. Automaton has 7964 states and 9008 transitions. Word has length 359 [2024-11-28 03:32:12,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:12,471 INFO L471 AbstractCegarLoop]: Abstraction has 7964 states and 9008 transitions. [2024-11-28 03:32:12,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:12,472 INFO L276 IsEmpty]: Start isEmpty. Operand 7964 states and 9008 transitions. [2024-11-28 03:32:12,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2024-11-28 03:32:12,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:12,488 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:12,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:12,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:32:12,689 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:12,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:12,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1108276798, now seen corresponding path program 1 times [2024-11-28 03:32:12,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:12,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581181139] [2024-11-28 03:32:12,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:12,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 486 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2024-11-28 03:32:13,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:13,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581181139] [2024-11-28 03:32:13,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581181139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:13,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:13,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21910663] [2024-11-28 03:32:13,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:13,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:13,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:13,007 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:13,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:13,007 INFO L87 Difference]: Start difference. First operand 7964 states and 9008 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:14,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:14,142 INFO L93 Difference]: Finished difference Result 17029 states and 19297 transitions. [2024-11-28 03:32:14,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:14,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 446 [2024-11-28 03:32:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:14,165 INFO L225 Difference]: With dead ends: 17029 [2024-11-28 03:32:14,165 INFO L226 Difference]: Without dead ends: 9435 [2024-11-28 03:32:14,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:14,171 INFO L435 NwaCegarLoop]: 303 mSDtfsCounter, 101 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:14,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 322 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 03:32:14,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9435 states. [2024-11-28 03:32:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9435 to 7587. [2024-11-28 03:32:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7587 states, 7586 states have (on average 1.119825995254416) internal successors, (8495), 7586 states have internal predecessors, (8495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:14,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7587 states to 7587 states and 8495 transitions. [2024-11-28 03:32:14,296 INFO L78 Accepts]: Start accepts. Automaton has 7587 states and 8495 transitions. Word has length 446 [2024-11-28 03:32:14,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:14,297 INFO L471 AbstractCegarLoop]: Abstraction has 7587 states and 8495 transitions. [2024-11-28 03:32:14,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 7587 states and 8495 transitions. [2024-11-28 03:32:14,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 481 [2024-11-28 03:32:14,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:14,310 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:14,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 03:32:14,310 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:14,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:14,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1480841082, now seen corresponding path program 1 times [2024-11-28 03:32:14,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:14,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336751576] [2024-11-28 03:32:14,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:14,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:15,100 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-28 03:32:15,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:15,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336751576] [2024-11-28 03:32:15,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336751576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:15,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:15,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:15,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957317830] [2024-11-28 03:32:15,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:15,102 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:15,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:15,103 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:15,103 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:15,104 INFO L87 Difference]: Start difference. First operand 7587 states and 8495 transitions. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:16,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:16,049 INFO L93 Difference]: Finished difference Result 15359 states and 17218 transitions. [2024-11-28 03:32:16,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:16,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 480 [2024-11-28 03:32:16,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:16,062 INFO L225 Difference]: With dead ends: 15359 [2024-11-28 03:32:16,062 INFO L226 Difference]: Without dead ends: 7958 [2024-11-28 03:32:16,068 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:16,069 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 89 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:16,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 172 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:32:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2024-11-28 03:32:16,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7955. [2024-11-28 03:32:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7955 states, 7954 states have (on average 1.1079959768669851) internal successors, (8813), 7954 states have internal predecessors, (8813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 8813 transitions. [2024-11-28 03:32:16,196 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 8813 transitions. Word has length 480 [2024-11-28 03:32:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:16,197 INFO L471 AbstractCegarLoop]: Abstraction has 7955 states and 8813 transitions. [2024-11-28 03:32:16,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 8813 transitions. [2024-11-28 03:32:16,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2024-11-28 03:32:16,209 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:16,210 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:16,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:32:16,210 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:16,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:16,211 INFO L85 PathProgramCache]: Analyzing trace with hash -380186503, now seen corresponding path program 1 times [2024-11-28 03:32:16,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:16,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768002586] [2024-11-28 03:32:16,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:16,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:16,958 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 488 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2024-11-28 03:32:16,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:16,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768002586] [2024-11-28 03:32:16,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768002586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:16,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:16,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:32:16,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689289653] [2024-11-28 03:32:16,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:16,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:32:16,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:16,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:32:16,962 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:16,963 INFO L87 Difference]: Start difference. First operand 7955 states and 8813 transitions. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:18,528 INFO L93 Difference]: Finished difference Result 17379 states and 19317 transitions. [2024-11-28 03:32:18,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:18,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 481 [2024-11-28 03:32:18,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:18,541 INFO L225 Difference]: With dead ends: 17379 [2024-11-28 03:32:18,542 INFO L226 Difference]: Without dead ends: 9794 [2024-11-28 03:32:18,549 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:18,550 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 285 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:18,550 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 153 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:32:18,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9794 states. [2024-11-28 03:32:18,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9794 to 8874. [2024-11-28 03:32:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 8873 states have (on average 1.1000788910176942) internal successors, (9761), 8873 states have internal predecessors, (9761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 9761 transitions. [2024-11-28 03:32:18,684 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 9761 transitions. Word has length 481 [2024-11-28 03:32:18,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:18,685 INFO L471 AbstractCegarLoop]: Abstraction has 8874 states and 9761 transitions. [2024-11-28 03:32:18,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:18,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 9761 transitions. [2024-11-28 03:32:18,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2024-11-28 03:32:18,698 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:18,698 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:18,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:32:18,699 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:18,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -914071402, now seen corresponding path program 1 times [2024-11-28 03:32:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:18,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087898438] [2024-11-28 03:32:18,700 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:18,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 578 proven. 133 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2024-11-28 03:32:20,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087898438] [2024-11-28 03:32:20,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087898438] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:20,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741975826] [2024-11-28 03:32:20,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:20,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:20,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:20,318 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:20,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:32:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:20,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 679 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:32:20,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 835 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-28 03:32:20,829 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:20,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741975826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:20,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:20,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-28 03:32:20,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166802384] [2024-11-28 03:32:20,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:20,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:20,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:20,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:20,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:20,833 INFO L87 Difference]: Start difference. First operand 8874 states and 9761 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:21,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:21,706 INFO L93 Difference]: Finished difference Result 18305 states and 20183 transitions. [2024-11-28 03:32:21,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:21,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 518 [2024-11-28 03:32:21,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:21,715 INFO L225 Difference]: With dead ends: 18305 [2024-11-28 03:32:21,715 INFO L226 Difference]: Without dead ends: 9801 [2024-11-28 03:32:21,721 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 523 GetRequests, 518 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:21,722 INFO L435 NwaCegarLoop]: 310 mSDtfsCounter, 93 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:21,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 329 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:32:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9801 states. [2024-11-28 03:32:21,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9801 to 9610. [2024-11-28 03:32:21,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9610 states, 9609 states have (on average 1.0999063378083047) internal successors, (10569), 9609 states have internal predecessors, (10569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:21,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9610 states to 9610 states and 10569 transitions. [2024-11-28 03:32:21,842 INFO L78 Accepts]: Start accepts. Automaton has 9610 states and 10569 transitions. Word has length 518 [2024-11-28 03:32:21,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:21,843 INFO L471 AbstractCegarLoop]: Abstraction has 9610 states and 10569 transitions. [2024-11-28 03:32:21,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:21,844 INFO L276 IsEmpty]: Start isEmpty. Operand 9610 states and 10569 transitions. [2024-11-28 03:32:21,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2024-11-28 03:32:21,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:21,858 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:21,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:22,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:32:22,059 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:22,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:22,060 INFO L85 PathProgramCache]: Analyzing trace with hash 978702432, now seen corresponding path program 1 times [2024-11-28 03:32:22,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:22,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504970100] [2024-11-28 03:32:22,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:22,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:22,821 INFO L134 CoverageAnalysis]: Checked inductivity of 853 backedges. 659 proven. 0 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2024-11-28 03:32:22,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:22,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504970100] [2024-11-28 03:32:22,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504970100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:22,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:22,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:22,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354621142] [2024-11-28 03:32:22,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:22,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:22,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:22,824 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:22,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:22,825 INFO L87 Difference]: Start difference. First operand 9610 states and 10569 transitions. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:23,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:23,830 INFO L93 Difference]: Finished difference Result 20509 states and 22627 transitions. [2024-11-28 03:32:23,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 572 [2024-11-28 03:32:23,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:23,840 INFO L225 Difference]: With dead ends: 20509 [2024-11-28 03:32:23,840 INFO L226 Difference]: Without dead ends: 11269 [2024-11-28 03:32:23,845 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:23,846 INFO L435 NwaCegarLoop]: 69 mSDtfsCounter, 120 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:23,846 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 73 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 03:32:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11269 states. [2024-11-28 03:32:23,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11269 to 9426. [2024-11-28 03:32:23,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9426 states, 9425 states have (on average 1.0980371352785145) internal successors, (10349), 9425 states have internal predecessors, (10349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:23,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9426 states to 9426 states and 10349 transitions. [2024-11-28 03:32:23,954 INFO L78 Accepts]: Start accepts. Automaton has 9426 states and 10349 transitions. Word has length 572 [2024-11-28 03:32:23,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:23,954 INFO L471 AbstractCegarLoop]: Abstraction has 9426 states and 10349 transitions. [2024-11-28 03:32:23,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:23,955 INFO L276 IsEmpty]: Start isEmpty. Operand 9426 states and 10349 transitions. [2024-11-28 03:32:23,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2024-11-28 03:32:23,967 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:23,967 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:23,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:32:23,968 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:23,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:23,968 INFO L85 PathProgramCache]: Analyzing trace with hash 47691538, now seen corresponding path program 1 times [2024-11-28 03:32:23,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:23,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286643863] [2024-11-28 03:32:23,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:23,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:24,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1718 backedges. 1189 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2024-11-28 03:32:24,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:24,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286643863] [2024-11-28 03:32:24,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286643863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:24,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:24,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:24,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161397846] [2024-11-28 03:32:24,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:24,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:32:24,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:24,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:32:24,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:24,822 INFO L87 Difference]: Start difference. First operand 9426 states and 10349 transitions. Second operand has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:26,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:26,387 INFO L93 Difference]: Finished difference Result 20333 states and 22350 transitions. [2024-11-28 03:32:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:26,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 682 [2024-11-28 03:32:26,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:26,397 INFO L225 Difference]: With dead ends: 20333 [2024-11-28 03:32:26,397 INFO L226 Difference]: Without dead ends: 11092 [2024-11-28 03:32:26,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:26,403 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 230 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:26,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 66 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1043 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:32:26,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11092 states. [2024-11-28 03:32:26,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11092 to 8506. [2024-11-28 03:32:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8506 states, 8505 states have (on average 1.0979423868312757) internal successors, (9338), 8505 states have internal predecessors, (9338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:26,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8506 states to 8506 states and 9338 transitions. [2024-11-28 03:32:26,519 INFO L78 Accepts]: Start accepts. Automaton has 8506 states and 9338 transitions. Word has length 682 [2024-11-28 03:32:26,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:26,520 INFO L471 AbstractCegarLoop]: Abstraction has 8506 states and 9338 transitions. [2024-11-28 03:32:26,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 89.25) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:26,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8506 states and 9338 transitions. [2024-11-28 03:32:26,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2024-11-28 03:32:26,529 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:26,530 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:26,530 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:32:26,530 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:26,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:26,531 INFO L85 PathProgramCache]: Analyzing trace with hash -534851769, now seen corresponding path program 1 times [2024-11-28 03:32:26,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:26,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392469717] [2024-11-28 03:32:26,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:26,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:27,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2242 backedges. 1055 proven. 0 refuted. 0 times theorem prover too weak. 1187 trivial. 0 not checked. [2024-11-28 03:32:27,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:27,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392469717] [2024-11-28 03:32:27,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392469717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:27,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:27,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:27,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372721648] [2024-11-28 03:32:27,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:27,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:32:27,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:27,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:32:27,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:27,681 INFO L87 Difference]: Start difference. First operand 8506 states and 9338 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:29,210 INFO L93 Difference]: Finished difference Result 22725 states and 25044 transitions. [2024-11-28 03:32:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 774 [2024-11-28 03:32:29,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:29,222 INFO L225 Difference]: With dead ends: 22725 [2024-11-28 03:32:29,222 INFO L226 Difference]: Without dead ends: 14589 [2024-11-28 03:32:29,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:32:29,227 INFO L435 NwaCegarLoop]: 66 mSDtfsCounter, 236 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:29,227 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 97 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 03:32:29,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14589 states. [2024-11-28 03:32:29,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14589 to 13665. [2024-11-28 03:32:29,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13665 states, 13664 states have (on average 1.088041569086651) internal successors, (14867), 13664 states have internal predecessors, (14867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:29,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 14867 transitions. [2024-11-28 03:32:29,398 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 14867 transitions. Word has length 774 [2024-11-28 03:32:29,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:29,398 INFO L471 AbstractCegarLoop]: Abstraction has 13665 states and 14867 transitions. [2024-11-28 03:32:29,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:29,399 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 14867 transitions. [2024-11-28 03:32:29,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-11-28 03:32:29,408 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:29,409 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:29,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:32:29,409 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:29,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:29,410 INFO L85 PathProgramCache]: Analyzing trace with hash 542249316, now seen corresponding path program 1 times [2024-11-28 03:32:29,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:29,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510408331] [2024-11-28 03:32:29,410 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:29,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1107 proven. 336 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2024-11-28 03:32:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510408331] [2024-11-28 03:32:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510408331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1805034955] [2024-11-28 03:32:31,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:31,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:31,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:31,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:31,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:32:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:31,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:32:31,383 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:32,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1429 proven. 380 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-11-28 03:32:32,480 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:32:34,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2362 backedges. 1809 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2024-11-28 03:32:34,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1805034955] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:34,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:32:34,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2024-11-28 03:32:34,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464549151] [2024-11-28 03:32:34,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:34,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:32:34,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:34,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:32:34,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:32:34,370 INFO L87 Difference]: Start difference. First operand 13665 states and 14867 transitions. Second operand has 5 states, 5 states have (on average 87.8) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:36,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:36,264 INFO L93 Difference]: Finished difference Result 32855 states and 35805 transitions. [2024-11-28 03:32:36,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:32:36,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 788 [2024-11-28 03:32:36,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:36,283 INFO L225 Difference]: With dead ends: 32855 [2024-11-28 03:32:36,284 INFO L226 Difference]: Without dead ends: 19560 [2024-11-28 03:32:36,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1580 GetRequests, 1570 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:32:36,293 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 245 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:36,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 66 Invalid, 1430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 03:32:36,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19560 states. [2024-11-28 03:32:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19560 to 17165. [2024-11-28 03:32:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17165 states, 17164 states have (on average 1.0907131204847356) internal successors, (18721), 17164 states have internal predecessors, (18721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:36,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17165 states to 17165 states and 18721 transitions. [2024-11-28 03:32:36,525 INFO L78 Accepts]: Start accepts. Automaton has 17165 states and 18721 transitions. Word has length 788 [2024-11-28 03:32:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:36,526 INFO L471 AbstractCegarLoop]: Abstraction has 17165 states and 18721 transitions. [2024-11-28 03:32:36,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 87.8) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:36,526 INFO L276 IsEmpty]: Start isEmpty. Operand 17165 states and 18721 transitions. [2024-11-28 03:32:36,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 887 [2024-11-28 03:32:36,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:36,539 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:36,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:32:36,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:32:36,739 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:36,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:36,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1151524527, now seen corresponding path program 1 times [2024-11-28 03:32:36,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:36,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051771488] [2024-11-28 03:32:36,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:36,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:37,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2967 backedges. 1261 proven. 0 refuted. 0 times theorem prover too weak. 1706 trivial. 0 not checked. [2024-11-28 03:32:37,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:37,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051771488] [2024-11-28 03:32:37,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051771488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:37,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:37,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:37,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053376907] [2024-11-28 03:32:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:37,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:37,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:37,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:37,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:37,563 INFO L87 Difference]: Start difference. First operand 17165 states and 18721 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:38,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:38,462 INFO L93 Difference]: Finished difference Result 36912 states and 40337 transitions. [2024-11-28 03:32:38,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:38,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 886 [2024-11-28 03:32:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:38,477 INFO L225 Difference]: With dead ends: 36912 [2024-11-28 03:32:38,477 INFO L226 Difference]: Without dead ends: 20117 [2024-11-28 03:32:38,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:38,487 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 128 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:38,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 132 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:32:38,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20117 states. [2024-11-28 03:32:38,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20117 to 18824. [2024-11-28 03:32:38,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18824 states, 18823 states have (on average 1.0910588110290602) internal successors, (20537), 18823 states have internal predecessors, (20537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:38,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18824 states to 18824 states and 20537 transitions. [2024-11-28 03:32:38,671 INFO L78 Accepts]: Start accepts. Automaton has 18824 states and 20537 transitions. Word has length 886 [2024-11-28 03:32:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:38,671 INFO L471 AbstractCegarLoop]: Abstraction has 18824 states and 20537 transitions. [2024-11-28 03:32:38,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 18824 states and 20537 transitions. [2024-11-28 03:32:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 897 [2024-11-28 03:32:38,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:38,742 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:38,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:32:38,742 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:38,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash 414037878, now seen corresponding path program 1 times [2024-11-28 03:32:38,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:38,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221525363] [2024-11-28 03:32:38,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:38,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2987 backedges. 1958 proven. 0 refuted. 0 times theorem prover too weak. 1029 trivial. 0 not checked. [2024-11-28 03:32:39,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:39,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221525363] [2024-11-28 03:32:39,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221525363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:39,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:32:39,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:32:39,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840338910] [2024-11-28 03:32:39,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:39,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:39,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:39,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:39,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:39,530 INFO L87 Difference]: Start difference. First operand 18824 states and 20537 transitions. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:40,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:40,398 INFO L93 Difference]: Finished difference Result 40036 states and 43744 transitions. [2024-11-28 03:32:40,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:40,398 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 896 [2024-11-28 03:32:40,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:40,416 INFO L225 Difference]: With dead ends: 40036 [2024-11-28 03:32:40,416 INFO L226 Difference]: Without dead ends: 21582 [2024-11-28 03:32:40,424 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:32:40,425 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 75 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:40,425 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 300 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:32:40,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21582 states. [2024-11-28 03:32:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21582 to 13110. [2024-11-28 03:32:40,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 13109 states have (on average 1.0817758791669845) internal successors, (14181), 13109 states have internal predecessors, (14181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 14181 transitions. [2024-11-28 03:32:40,670 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 14181 transitions. Word has length 896 [2024-11-28 03:32:40,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:40,671 INFO L471 AbstractCegarLoop]: Abstraction has 13110 states and 14181 transitions. [2024-11-28 03:32:40,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:40,671 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 14181 transitions. [2024-11-28 03:32:40,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1120 [2024-11-28 03:32:40,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:32:40,689 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:40,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 03:32:40,689 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:32:40,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:32:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -111425634, now seen corresponding path program 1 times [2024-11-28 03:32:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:32:40,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132863785] [2024-11-28 03:32:40,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:40,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:32:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:43,396 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 2682 proven. 924 refuted. 0 times theorem prover too weak. 972 trivial. 0 not checked. [2024-11-28 03:32:43,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:32:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132863785] [2024-11-28 03:32:43,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132863785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:32:43,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229058544] [2024-11-28 03:32:43,397 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:32:43,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:32:43,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:32:43,399 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:32:43,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:32:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:32:43,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 1432 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:32:43,776 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:32:44,166 INFO L134 CoverageAnalysis]: Checked inductivity of 4578 backedges. 2903 proven. 0 refuted. 0 times theorem prover too weak. 1675 trivial. 0 not checked. [2024-11-28 03:32:44,167 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:32:44,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229058544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:32:44,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:32:44,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-28 03:32:44,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445012842] [2024-11-28 03:32:44,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:32:44,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:32:44,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:32:44,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:32:44,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:44,170 INFO L87 Difference]: Start difference. First operand 13110 states and 14181 transitions. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:32:44,852 INFO L93 Difference]: Finished difference Result 18652 states and 20202 transitions. [2024-11-28 03:32:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:32:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1119 [2024-11-28 03:32:44,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:32:44,854 INFO L225 Difference]: With dead ends: 18652 [2024-11-28 03:32:44,854 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:32:44,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1127 GetRequests, 1122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:32:44,861 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 88 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:32:44,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 274 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:32:44,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:32:44,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:32:44,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:44,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:32:44,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1119 [2024-11-28 03:32:44,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:32:44,864 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:32:44,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:32:44,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:32:44,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:32:44,868 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 03:32:44,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:32:45,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:32:45,072 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:32:45,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 03:32:57,757 WARN L286 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 383 DAG size of output: 410 (called from [L 212] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.or) [2024-11-28 03:33:00,183 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:33:00,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:33:00 BoogieIcfgContainer [2024-11-28 03:33:00,212 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:33:00,213 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:33:00,213 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:33:00,214 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:33:00,215 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:31:31" (3/4) ... [2024-11-28 03:33:00,218 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:33:00,242 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 03:33:00,243 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 03:33:00,244 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:33:00,246 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:33:00,501 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:33:00,502 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:33:00,502 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:33:00,503 INFO L158 Benchmark]: Toolchain (without parser) took 93886.21ms. Allocated memory was 117.4MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 90.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 526.0MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,504 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:33:00,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1033.29ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 46.8MB in the end (delta: 43.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 228.54ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 79.2MB in the end (delta: -32.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,504 INFO L158 Benchmark]: Boogie Preprocessor took 245.49ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 54.7MB in the end (delta: 24.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,505 INFO L158 Benchmark]: RCFGBuilder took 3030.89ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 54.7MB in the beginning and 128.4MB in the end (delta: -73.7MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,505 INFO L158 Benchmark]: TraceAbstraction took 89051.07ms. Allocated memory was 176.2MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 128.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2024-11-28 03:33:00,505 INFO L158 Benchmark]: Witness Printer took 288.73ms. Allocated memory is still 1.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:33:00,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1033.29ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 46.8MB in the end (delta: 43.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 228.54ms. Allocated memory is still 117.4MB. Free memory was 46.8MB in the beginning and 79.2MB in the end (delta: -32.4MB). Peak memory consumption was 17.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 245.49ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 54.7MB in the end (delta: 24.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * RCFGBuilder took 3030.89ms. Allocated memory was 117.4MB in the beginning and 176.2MB in the end (delta: 58.7MB). Free memory was 54.7MB in the beginning and 128.4MB in the end (delta: -73.7MB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. * TraceAbstraction took 89051.07ms. Allocated memory was 176.2MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 128.4MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 288.73ms. Allocated memory is still 1.7GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 178]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 283 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 73.8s, OverallIterations: 24, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 33.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4425 SdHoareTripleChecker+Valid, 30.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4425 mSDsluCounter, 4651 SdHoareTripleChecker+Invalid, 25.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 571 mSDsCounter, 2827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17772 IncrementalHoareTripleChecker+Invalid, 20599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2827 mSolverCounterUnsat, 4080 mSDtfsCounter, 17772 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5019 GetRequests, 4953 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18824occurred in iteration=22, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 24 MinimizatonAttempts, 28859 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 31.0s InterpolantComputationTime, 14216 NumberOfCodeBlocks, 14216 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 15658 ConstructedInterpolants, 0 QuantifiedInterpolants, 51665 SizeOfPredicates, 8 NumberOfNonLiveVariables, 4527 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 33 InterpolantComputations, 23 PerfectInterpolantSequences, 32263/34519 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 1044]: Loop Invariant Derived loop invariant: ((((((((((((((((((((a29 <= 275) && (a25 == 12)) && (a4 == 0)) && (246 <= a29)) || (((((((((a25 == 12) && (307 <= a23)) && ((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) <= 0)) && (a3 == 1)) && (a29 <= 220)) && (a4 == 1)) && (a8 == 15)) && (((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) < 0) || (((((long long) a23 + 4) >= 0) ? (((long long) a23 + 4) % 5) : ((((long long) a23 + 4) % 5) + 5)) == 0))) && (130 <= a29))) || ((((((((a25 == 11) && ((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) <= 0)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (246 <= a29)) && (((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) < 0) || (((((long long) a23 + 4) >= 0) ? (((long long) a23 + 4) % 5) : ((((long long) a23 + 4) % 5) + 5)) == 0))) && (0 <= ((long long) a23 + 42)))) || ((((a25 == 11) && (a29 <= 274)) && (((long long) 119992 + a23) <= 0)) && (a4 == 1))) || ((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a29 <= 274)) && (a4 == 1))) || (((((260 <= a29) && (a25 == 11)) && (a4 == 1)) && (a23 <= 312)) && (0 <= ((long long) a23 + 42)))) || (((((a25 == 13) && (a3 == 1)) && (((long long) a23 + 599772) <= 0)) && (a4 == 1)) && (a8 == 15))) || ((((((((a25 == 12) && (307 <= a23)) && ((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) <= 0)) && (a3 == 1)) && (a4 == 1)) && (a8 == 15)) && (246 <= a29)) && (((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) < 0) || (((((long long) a23 + 4) >= 0) ? (((long long) a23 + 4) % 5) : ((((long long) a23 + 4) % 5) + 5)) == 0)))) || ((((long long) a23 + 43) <= 0) && ((((a29 <= 140) && (a4 == 0)) && (a25 == 11)) || (((a29 <= 140) && (a4 == 0)) && (a25 == 10))))) || (((((a25 == 11) && (a29 <= 274)) && (a4 == 1)) && (a23 <= 312)) && (246 <= a29))) || (((((a25 == 13) && (((long long) a23 + 43) <= 0)) && (a4 == 0)) && (a29 <= 274)) && (246 <= a29))) || ((((((long long) a23 + 43) <= 0) && (a29 <= 275)) && (a25 == 12)) && (a4 == 0))) || ((((a25 <= 10) && ((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) <= 0)) && (a4 == 1)) && (((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) < 0) || (((((long long) a23 + 4) >= 0) ? (((long long) a23 + 4) % 5) : ((((long long) a23 + 4) % 5) + 5)) == 0)))) || (((((a25 == 13) && ((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) <= 0)) && (a4 == 1)) && (((((((long long) a23 + -600276) >= 0) ? (((long long) a23 + -600276) / 5) : ((((long long) a23 + -600276) / 5) - 1)) + 43) < 0) || (((((long long) a23 + 4) >= 0) ? (((long long) a23 + 4) % 5) : ((((long long) a23 + 4) % 5) + 5)) == 0))) && (0 <= ((long long) a23 + 42)))) || ((((a25 == 12) && (a4 == 1)) && (a23 <= 312)) && (0 <= ((long long) a23 + 42)))) || ((((((long long) a23 + 43) <= 0) && (a29 <= 140)) && (a4 == 0)) && (a25 == 9))) || ((((260 <= a29) && (((long long) a23 + 43) <= 0)) && (a4 == 0)) && (a25 <= 9))) RESULT: Ultimate proved your program to be correct! [2024-11-28 03:33:00,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_aa764f58-7ed2-4c93-a523-e0bc3e8e3400/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE