./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem03_label15.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_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/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_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem03_label15.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/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_7e286151-c339-4186-bb8f-6e9e293d922d/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 c9240c4aeadc96e65569656f5eb1191209fe6aaacfd216b5c85e62d05a03467a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:14:31,950 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:14:32,051 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:14:32,060 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:14:32,060 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:14:32,101 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:14:32,102 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:14:32,103 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:14:32,103 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:14:32,103 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:14:32,104 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:14:32,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:14:32,105 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:14:32,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:14:32,105 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:14:32,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:14:32,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:14:32,107 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:14:32,108 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:32,108 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:32,109 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:32,109 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:14:32,110 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:14:32,110 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:14:32,110 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:14:32,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:32,110 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:14:32,111 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:14:32,111 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:14:32,111 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:14:32,111 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:14:32,111 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:14:32,112 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:14:32,112 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:14:32,112 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:14:32,112 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:14:32,112 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_7e286151-c339-4186-bb8f-6e9e293d922d/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 -> c9240c4aeadc96e65569656f5eb1191209fe6aaacfd216b5c85e62d05a03467a [2024-11-28 05:14:32,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:14:32,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:14:32,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:14:32,479 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:14:32,479 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:14:32,483 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem03_label15.c [2024-11-28 05:14:35,604 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/data/71dd7a864/27390ead9a0e4139acd703fe2dd27649/FLAGccbe7dd60 [2024-11-28 05:14:36,128 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:14:36,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/sv-benchmarks/c/eca-rers2012/Problem03_label15.c [2024-11-28 05:14:36,150 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/data/71dd7a864/27390ead9a0e4139acd703fe2dd27649/FLAGccbe7dd60 [2024-11-28 05:14:36,175 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/data/71dd7a864/27390ead9a0e4139acd703fe2dd27649 [2024-11-28 05:14:36,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:14:36,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:14:36,181 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:36,182 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:14:36,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:14:36,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:36" (1/1) ... [2024-11-28 05:14:36,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20036375 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:36, skipping insertion in model container [2024-11-28 05:14:36,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:14:36" (1/1) ... [2024-11-28 05:14:36,253 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:14:37,069 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_7e286151-c339-4186-bb8f-6e9e293d922d/sv-benchmarks/c/eca-rers2012/Problem03_label15.c[61228,61241] [2024-11-28 05:14:37,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:37,123 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:14:37,412 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_7e286151-c339-4186-bb8f-6e9e293d922d/sv-benchmarks/c/eca-rers2012/Problem03_label15.c[61228,61241] [2024-11-28 05:14:37,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:14:37,452 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:14:37,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37 WrapperNode [2024-11-28 05:14:37,453 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:14:37,455 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:37,455 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:14:37,455 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:14:37,465 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,606 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2024-11-28 05:14:37,606 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:14:37,607 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:14:37,607 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:14:37,607 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:14:37,617 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,617 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,631 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,684 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 05:14:37,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,685 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,746 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,750 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,769 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,776 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:14:37,796 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:14:37,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:14:37,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:14:37,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (1/1) ... [2024-11-28 05:14:37,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:14:37,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:37,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:14:37,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:14:37,882 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:14:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:14:37,883 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:14:37,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:14:38,043 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:14:38,045 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:14:40,432 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-28 05:14:40,432 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:14:40,464 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:14:40,464 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:14:40,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:40 BoogieIcfgContainer [2024-11-28 05:14:40,465 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:14:40,469 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:14:40,469 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:14:40,474 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:14:40,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:14:36" (1/3) ... [2024-11-28 05:14:40,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758d059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:40, skipping insertion in model container [2024-11-28 05:14:40,476 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:14:37" (2/3) ... [2024-11-28 05:14:40,478 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758d059e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:14:40, skipping insertion in model container [2024-11-28 05:14:40,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:14:40" (3/3) ... [2024-11-28 05:14:40,479 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem03_label15.c [2024-11-28 05:14:40,499 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:14:40,503 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem03_label15.c that has 1 procedures, 302 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 05:14:40,588 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:14:40,602 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;@2cff5a3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:14:40,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:14:40,609 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 05:14:40,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-28 05:14:40,629 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:40,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:40,630 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:40,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:40,637 INFO L85 PathProgramCache]: Analyzing trace with hash -910941086, now seen corresponding path program 1 times [2024-11-28 05:14:40,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:40,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741575544] [2024-11-28 05:14:40,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:40,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:42,140 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 05:14:42,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:42,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741575544] [2024-11-28 05:14:42,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741575544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:42,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:42,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:42,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170455670] [2024-11-28 05:14:42,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:42,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:42,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:42,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:42,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:42,181 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 05:14:43,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:43,727 INFO L93 Difference]: Finished difference Result 810 states and 1445 transitions. [2024-11-28 05:14:43,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:43,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 200 [2024-11-28 05:14:43,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:43,744 INFO L225 Difference]: With dead ends: 810 [2024-11-28 05:14:43,744 INFO L226 Difference]: Without dead ends: 444 [2024-11-28 05:14:43,748 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 05:14:43,752 INFO L435 NwaCegarLoop]: 194 mSDtfsCounter, 54 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:43,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 231 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:14:43,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-28 05:14:43,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-28 05:14:43,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 1.4288939051918736) internal successors, (633), 443 states have internal predecessors, (633), 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 05:14:43,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 633 transitions. [2024-11-28 05:14:43,807 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 633 transitions. Word has length 200 [2024-11-28 05:14:43,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:43,807 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 633 transitions. [2024-11-28 05:14:43,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 2 states have internal predecessors, (200), 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 05:14:43,808 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 633 transitions. [2024-11-28 05:14:43,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2024-11-28 05:14:43,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:43,812 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:43,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:14:43,812 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:43,813 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1872130817, now seen corresponding path program 1 times [2024-11-28 05:14:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31175849] [2024-11-28 05:14:43,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:44,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:44,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31175849] [2024-11-28 05:14:44,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31175849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:44,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:44,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:44,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773052276] [2024-11-28 05:14:44,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:44,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:44,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:44,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:44,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:44,180 INFO L87 Difference]: Start difference. First operand 444 states and 633 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 05:14:45,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:45,282 INFO L93 Difference]: Finished difference Result 1312 states and 1878 transitions. [2024-11-28 05:14:45,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:45,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 208 [2024-11-28 05:14:45,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:45,286 INFO L225 Difference]: With dead ends: 1312 [2024-11-28 05:14:45,286 INFO L226 Difference]: Without dead ends: 870 [2024-11-28 05:14:45,288 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 05:14:45,289 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:45,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:14:45,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-28 05:14:45,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 856. [2024-11-28 05:14:45,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 855 states have (on average 1.3953216374269006) internal successors, (1193), 855 states have internal predecessors, (1193), 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 05:14:45,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1193 transitions. [2024-11-28 05:14:45,356 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1193 transitions. Word has length 208 [2024-11-28 05:14:45,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:45,356 INFO L471 AbstractCegarLoop]: Abstraction has 856 states and 1193 transitions. [2024-11-28 05:14:45,356 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 2 states have internal predecessors, (208), 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 05:14:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1193 transitions. [2024-11-28 05:14:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-28 05:14:45,372 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:45,373 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:45,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:14:45,373 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:45,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:45,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1580219308, now seen corresponding path program 1 times [2024-11-28 05:14:45,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:45,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566127963] [2024-11-28 05:14:45,374 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:45,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:45,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:46,482 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:14:46,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:46,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566127963] [2024-11-28 05:14:46,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566127963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:46,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:46,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:14:46,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112915772] [2024-11-28 05:14:46,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:46,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:14:46,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:46,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:14:46,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:46,486 INFO L87 Difference]: Start difference. First operand 856 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 05:14:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:47,833 INFO L93 Difference]: Finished difference Result 1864 states and 2652 transitions. [2024-11-28 05:14:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:14:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 215 [2024-11-28 05:14:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:47,837 INFO L225 Difference]: With dead ends: 1864 [2024-11-28 05:14:47,838 INFO L226 Difference]: Without dead ends: 836 [2024-11-28 05:14:47,839 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 05:14:47,840 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 330 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:47,840 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 47 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:14:47,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2024-11-28 05:14:47,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 836. [2024-11-28 05:14:47,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.2658682634730538) internal successors, (1057), 835 states have internal predecessors, (1057), 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 05:14:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1057 transitions. [2024-11-28 05:14:47,866 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1057 transitions. Word has length 215 [2024-11-28 05:14:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:47,866 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1057 transitions. [2024-11-28 05:14:47,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 3 states have internal predecessors, (210), 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 05:14:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1057 transitions. [2024-11-28 05:14:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-28 05:14:47,871 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:47,871 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:47,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:14:47,872 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:47,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:47,874 INFO L85 PathProgramCache]: Analyzing trace with hash -762822200, now seen corresponding path program 1 times [2024-11-28 05:14:47,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:47,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649851507] [2024-11-28 05:14:47,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:47,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:47,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:48,281 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:48,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:48,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649851507] [2024-11-28 05:14:48,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649851507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:48,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:48,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:14:48,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728481067] [2024-11-28 05:14:48,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:48,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:48,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:48,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:48,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:14:48,287 INFO L87 Difference]: Start difference. First operand 836 states and 1057 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 05:14:49,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:49,239 INFO L93 Difference]: Finished difference Result 2089 states and 2637 transitions. [2024-11-28 05:14:49,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:49,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 228 [2024-11-28 05:14:49,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:49,246 INFO L225 Difference]: With dead ends: 2089 [2024-11-28 05:14:49,246 INFO L226 Difference]: Without dead ends: 1255 [2024-11-28 05:14:49,247 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 05:14:49,249 INFO L435 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:49,251 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 57 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:14:49,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-28 05:14:49,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1252. [2024-11-28 05:14:49,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 1251 states have (on average 1.258193445243805) internal successors, (1574), 1251 states have internal predecessors, (1574), 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 05:14:49,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1574 transitions. [2024-11-28 05:14:49,288 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1574 transitions. Word has length 228 [2024-11-28 05:14:49,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:49,288 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1574 transitions. [2024-11-28 05:14:49,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 2 states have internal predecessors, (228), 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 05:14:49,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1574 transitions. [2024-11-28 05:14:49,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-28 05:14:49,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:49,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:49,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:14:49,296 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:49,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:49,296 INFO L85 PathProgramCache]: Analyzing trace with hash 966647857, now seen corresponding path program 1 times [2024-11-28 05:14:49,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:49,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023308433] [2024-11-28 05:14:49,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:49,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:50,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:50,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023308433] [2024-11-28 05:14:50,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023308433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:50,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:50,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:14:50,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859438051] [2024-11-28 05:14:50,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:50,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:14:50,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:50,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:14:50,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:14:50,188 INFO L87 Difference]: Start difference. First operand 1252 states and 1574 transitions. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 05:14:51,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:51,857 INFO L93 Difference]: Finished difference Result 3675 states and 4685 transitions. [2024-11-28 05:14:51,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:14:51,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 231 [2024-11-28 05:14:51,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:51,867 INFO L225 Difference]: With dead ends: 3675 [2024-11-28 05:14:51,867 INFO L226 Difference]: Without dead ends: 2077 [2024-11-28 05:14:51,869 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 05:14:51,870 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 193 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:51,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 149 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 05:14:51,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2024-11-28 05:14:51,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 2076. [2024-11-28 05:14:51,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2075 states have (on average 1.2448192771084337) internal successors, (2583), 2075 states have internal predecessors, (2583), 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 05:14:51,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2583 transitions. [2024-11-28 05:14:51,943 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2583 transitions. Word has length 231 [2024-11-28 05:14:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:51,944 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2583 transitions. [2024-11-28 05:14:51,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 3 states have internal predecessors, (231), 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 05:14:51,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2583 transitions. [2024-11-28 05:14:51,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2024-11-28 05:14:51,952 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:51,953 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:51,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:14:51,953 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1687815923, now seen corresponding path program 1 times [2024-11-28 05:14:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332789133] [2024-11-28 05:14:51,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:51,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:52,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:52,480 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:52,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:52,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332789133] [2024-11-28 05:14:52,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332789133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:52,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073685102] [2024-11-28 05:14:52,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:52,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:52,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:52,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:52,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:14:52,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:52,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:14:52,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 05:14:53,230 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:53,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073685102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:53,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:14:53,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2024-11-28 05:14:53,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413895873] [2024-11-28 05:14:53,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:53,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:53,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:53,233 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:53,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:53,235 INFO L87 Difference]: Start difference. First operand 2076 states and 2583 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 05:14:54,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:54,294 INFO L93 Difference]: Finished difference Result 6208 states and 7729 transitions. [2024-11-28 05:14:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 235 [2024-11-28 05:14:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:54,311 INFO L225 Difference]: With dead ends: 6208 [2024-11-28 05:14:54,311 INFO L226 Difference]: Without dead ends: 4134 [2024-11-28 05:14:54,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:54,315 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 55 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:54,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 79 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:14:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-28 05:14:54,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4126. [2024-11-28 05:14:54,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 1.213818181818182) internal successors, (5007), 4125 states have internal predecessors, (5007), 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 05:14:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5007 transitions. [2024-11-28 05:14:54,415 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 5007 transitions. Word has length 235 [2024-11-28 05:14:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:54,416 INFO L471 AbstractCegarLoop]: Abstraction has 4126 states and 5007 transitions. [2024-11-28 05:14:54,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 2 states have internal predecessors, (203), 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 05:14:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 5007 transitions. [2024-11-28 05:14:54,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2024-11-28 05:14:54,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:54,424 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:54,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:14:54,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:54,625 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:54,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash 2072872742, now seen corresponding path program 1 times [2024-11-28 05:14:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190755956] [2024-11-28 05:14:54,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:54,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190755956] [2024-11-28 05:14:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190755956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050976278] [2024-11-28 05:14:55,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:55,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:55,256 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:55,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:14:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:55,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:14:55,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:56,020 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 05:14:56,020 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:56,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1050976278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:56,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:14:56,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 05:14:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140611494] [2024-11-28 05:14:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:56,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:56,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:56,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:56,025 INFO L87 Difference]: Start difference. First operand 4126 states and 5007 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 05:14:57,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:57,270 INFO L93 Difference]: Finished difference Result 8258 states and 10027 transitions. [2024-11-28 05:14:57,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:57,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 238 [2024-11-28 05:14:57,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:57,289 INFO L225 Difference]: With dead ends: 8258 [2024-11-28 05:14:57,289 INFO L226 Difference]: Without dead ends: 4134 [2024-11-28 05:14:57,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:57,295 INFO L435 NwaCegarLoop]: 304 mSDtfsCounter, 24 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:57,295 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 319 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:14:57,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4134 states. [2024-11-28 05:14:57,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4134 to 4126. [2024-11-28 05:14:57,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4125 states have (on average 1.2041212121212121) internal successors, (4967), 4125 states have internal predecessors, (4967), 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 05:14:57,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 4967 transitions. [2024-11-28 05:14:57,422 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 4967 transitions. Word has length 238 [2024-11-28 05:14:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:57,422 INFO L471 AbstractCegarLoop]: Abstraction has 4126 states and 4967 transitions. [2024-11-28 05:14:57,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 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 05:14:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 4967 transitions. [2024-11-28 05:14:57,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2024-11-28 05:14:57,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:57,433 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:57,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:14:57,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:57,634 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:14:57,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:57,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1194323574, now seen corresponding path program 1 times [2024-11-28 05:14:57,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:14:57,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984107761] [2024-11-28 05:14:57,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:57,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:14:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:58,347 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:14:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:14:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984107761] [2024-11-28 05:14:58,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984107761] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:14:58,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188815811] [2024-11-28 05:14:58,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:58,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:58,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:58,354 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:58,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:14:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:58,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:14:58,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:14:58,637 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:58,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188815811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:58,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:14:58,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 05:14:58,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752096495] [2024-11-28 05:14:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:58,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:14:58,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:14:58,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:14:58,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:58,640 INFO L87 Difference]: Start difference. First operand 4126 states and 4967 transitions. Second operand has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 05:14:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:59,893 INFO L93 Difference]: Finished difference Result 10284 states and 12629 transitions. [2024-11-28 05:14:59,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:14:59,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 244 [2024-11-28 05:14:59,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:59,919 INFO L225 Difference]: With dead ends: 10284 [2024-11-28 05:14:59,919 INFO L226 Difference]: Without dead ends: 6160 [2024-11-28 05:14:59,923 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:14:59,924 INFO L435 NwaCegarLoop]: 317 mSDtfsCounter, 213 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:59,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 337 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:14:59,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6160 states. [2024-11-28 05:15:00,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6160 to 6156. [2024-11-28 05:15:00,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 6155 states have (on average 1.1626320064987814) internal successors, (7156), 6155 states have internal predecessors, (7156), 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 05:15:00,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 7156 transitions. [2024-11-28 05:15:00,095 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 7156 transitions. Word has length 244 [2024-11-28 05:15:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:00,095 INFO L471 AbstractCegarLoop]: Abstraction has 6156 states and 7156 transitions. [2024-11-28 05:15:00,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.66666666666667) internal successors, (239), 3 states have internal predecessors, (239), 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 05:15:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 7156 transitions. [2024-11-28 05:15:00,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2024-11-28 05:15:00,108 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:00,108 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:00,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:00,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:00,310 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:00,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1060727181, now seen corresponding path program 1 times [2024-11-28 05:15:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:00,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032111880] [2024-11-28 05:15:00,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:00,751 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 05:15:00,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:00,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032111880] [2024-11-28 05:15:00,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032111880] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:00,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175986467] [2024-11-28 05:15:00,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:00,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:00,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:00,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:00,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:15:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:01,008 INFO L256 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 05:15:01,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 05:15:01,381 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175986467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:01,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:01,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 05:15:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977883879] [2024-11-28 05:15:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:01,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:01,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:01,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:01,384 INFO L87 Difference]: Start difference. First operand 6156 states and 7156 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 05:15:02,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:02,446 INFO L93 Difference]: Finished difference Result 18427 states and 21411 transitions. [2024-11-28 05:15:02,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:02,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 245 [2024-11-28 05:15:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:02,508 INFO L225 Difference]: With dead ends: 18427 [2024-11-28 05:15:02,508 INFO L226 Difference]: Without dead ends: 12273 [2024-11-28 05:15:02,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:02,520 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 42 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:02,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 129 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:15:02,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2024-11-28 05:15:02,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 12269. [2024-11-28 05:15:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12269 states, 12268 states have (on average 1.1416693837626346) internal successors, (14006), 12268 states have internal predecessors, (14006), 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 05:15:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12269 states to 12269 states and 14006 transitions. [2024-11-28 05:15:02,827 INFO L78 Accepts]: Start accepts. Automaton has 12269 states and 14006 transitions. Word has length 245 [2024-11-28 05:15:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:02,828 INFO L471 AbstractCegarLoop]: Abstraction has 12269 states and 14006 transitions. [2024-11-28 05:15:02,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 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 05:15:02,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12269 states and 14006 transitions. [2024-11-28 05:15:02,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-28 05:15:02,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:02,848 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:02,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:15:03,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:03,049 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:03,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:03,050 INFO L85 PathProgramCache]: Analyzing trace with hash -343566708, now seen corresponding path program 1 times [2024-11-28 05:15:03,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:03,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135612221] [2024-11-28 05:15:03,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:03,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 05:15:03,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135612221] [2024-11-28 05:15:03,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135612221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:03,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739876054] [2024-11-28 05:15:03,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:03,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:03,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:03,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:03,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:15:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:03,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:15:03,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:04,008 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 05:15:04,008 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:04,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739876054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:04,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:04,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 05:15:04,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450327230] [2024-11-28 05:15:04,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:04,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:04,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:04,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:04,013 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:04,013 INFO L87 Difference]: Start difference. First operand 12269 states and 14006 transitions. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 05:15:05,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:05,061 INFO L93 Difference]: Finished difference Result 24535 states and 28009 transitions. [2024-11-28 05:15:05,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 266 [2024-11-28 05:15:05,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:05,097 INFO L225 Difference]: With dead ends: 24535 [2024-11-28 05:15:05,097 INFO L226 Difference]: Without dead ends: 12268 [2024-11-28 05:15:05,107 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:05,109 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 213 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:05,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 292 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:15:05,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12268 states. [2024-11-28 05:15:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12268 to 12061. [2024-11-28 05:15:05,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12061 states, 12060 states have (on average 1.106301824212272) internal successors, (13342), 12060 states have internal predecessors, (13342), 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 05:15:05,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12061 states to 12061 states and 13342 transitions. [2024-11-28 05:15:05,350 INFO L78 Accepts]: Start accepts. Automaton has 12061 states and 13342 transitions. Word has length 266 [2024-11-28 05:15:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:05,351 INFO L471 AbstractCegarLoop]: Abstraction has 12061 states and 13342 transitions. [2024-11-28 05:15:05,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 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 05:15:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12061 states and 13342 transitions. [2024-11-28 05:15:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2024-11-28 05:15:05,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:05,369 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:05,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 05:15:05,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:05,571 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:05,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 489688911, now seen corresponding path program 1 times [2024-11-28 05:15:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:05,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520103046] [2024-11-28 05:15:05,572 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 05:15:06,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:06,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520103046] [2024-11-28 05:15:06,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520103046] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:06,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:06,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:06,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300446702] [2024-11-28 05:15:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:06,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:06,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:06,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:06,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:06,084 INFO L87 Difference]: Start difference. First operand 12061 states and 13342 transitions. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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 05:15:07,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:07,503 INFO L93 Difference]: Finished difference Result 44470 states and 49057 transitions. [2024-11-28 05:15:07,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:07,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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 272 [2024-11-28 05:15:07,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:07,583 INFO L225 Difference]: With dead ends: 44470 [2024-11-28 05:15:07,583 INFO L226 Difference]: Without dead ends: 32411 [2024-11-28 05:15:07,598 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 05:15:07,598 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 481 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:07,599 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 298 Invalid, 755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:15:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32411 states. [2024-11-28 05:15:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32411 to 31798. [2024-11-28 05:15:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31798 states, 31797 states have (on average 1.0978394188130955) internal successors, (34908), 31797 states have internal predecessors, (34908), 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 05:15:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31798 states to 31798 states and 34908 transitions. [2024-11-28 05:15:08,210 INFO L78 Accepts]: Start accepts. Automaton has 31798 states and 34908 transitions. Word has length 272 [2024-11-28 05:15:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:08,211 INFO L471 AbstractCegarLoop]: Abstraction has 31798 states and 34908 transitions. [2024-11-28 05:15:08,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 3 states have internal predecessors, (242), 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 05:15:08,211 INFO L276 IsEmpty]: Start isEmpty. Operand 31798 states and 34908 transitions. [2024-11-28 05:15:08,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-28 05:15:08,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:08,246 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:08,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:15:08,246 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:08,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:08,247 INFO L85 PathProgramCache]: Analyzing trace with hash -141596557, now seen corresponding path program 2 times [2024-11-28 05:15:08,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:08,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258727528] [2024-11-28 05:15:08,247 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:15:08,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:08,370 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:15:08,371 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:15:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-28 05:15:09,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:09,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258727528] [2024-11-28 05:15:09,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258727528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:09,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:09,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211270417] [2024-11-28 05:15:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:09,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:09,597 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:09,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:09,602 INFO L87 Difference]: Start difference. First operand 31798 states and 34908 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 05:15:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:11,256 INFO L93 Difference]: Finished difference Result 90052 states and 98477 transitions. [2024-11-28 05:15:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 273 [2024-11-28 05:15:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:11,361 INFO L225 Difference]: With dead ends: 90052 [2024-11-28 05:15:11,361 INFO L226 Difference]: Without dead ends: 58256 [2024-11-28 05:15:11,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:11,391 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 444 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 824 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 983 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:11,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 58 Invalid, 983 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 824 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:15:11,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58256 states. [2024-11-28 05:15:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58256 to 48309. [2024-11-28 05:15:12,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48309 states, 48308 states have (on average 1.0969197648422622) internal successors, (52990), 48308 states have internal predecessors, (52990), 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 05:15:12,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48309 states to 48309 states and 52990 transitions. [2024-11-28 05:15:12,546 INFO L78 Accepts]: Start accepts. Automaton has 48309 states and 52990 transitions. Word has length 273 [2024-11-28 05:15:12,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:12,547 INFO L471 AbstractCegarLoop]: Abstraction has 48309 states and 52990 transitions. [2024-11-28 05:15:12,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 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 05:15:12,547 INFO L276 IsEmpty]: Start isEmpty. Operand 48309 states and 52990 transitions. [2024-11-28 05:15:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-28 05:15:12,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:12,597 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:12,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:15:12,598 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:12,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:12,599 INFO L85 PathProgramCache]: Analyzing trace with hash -954979738, now seen corresponding path program 1 times [2024-11-28 05:15:12,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:12,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28351555] [2024-11-28 05:15:12,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:13,539 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 05:15:13,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28351555] [2024-11-28 05:15:13,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28351555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:13,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094514527] [2024-11-28 05:15:13,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:13,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:13,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:13,545 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:13,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:15:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:13,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:15:13,799 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:14,235 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 05:15:14,235 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:15:14,641 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 87 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 05:15:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094514527] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:15:14,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:15:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2024-11-28 05:15:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407432061] [2024-11-28 05:15:14,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:15:14,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:15:14,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:14,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:15:14,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:14,646 INFO L87 Difference]: Start difference. First operand 48309 states and 52990 transitions. Second operand has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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 05:15:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:21,857 INFO L93 Difference]: Finished difference Result 205476 states and 225114 transitions. [2024-11-28 05:15:21,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 05:15:21,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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 276 [2024-11-28 05:15:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:22,104 INFO L225 Difference]: With dead ends: 205476 [2024-11-28 05:15:22,105 INFO L226 Difference]: Without dead ends: 157167 [2024-11-28 05:15:22,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 560 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:15:22,160 INFO L435 NwaCegarLoop]: 82 mSDtfsCounter, 1743 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4358 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1743 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 4957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:22,161 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1743 Valid, 257 Invalid, 4957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4358 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2024-11-28 05:15:22,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157167 states. [2024-11-28 05:15:24,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157167 to 149203. [2024-11-28 05:15:24,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149203 states, 149202 states have (on average 1.0754882642323829) internal successors, (160465), 149202 states have internal predecessors, (160465), 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 05:15:25,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149203 states to 149203 states and 160465 transitions. [2024-11-28 05:15:25,559 INFO L78 Accepts]: Start accepts. Automaton has 149203 states and 160465 transitions. Word has length 276 [2024-11-28 05:15:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:25,559 INFO L471 AbstractCegarLoop]: Abstraction has 149203 states and 160465 transitions. [2024-11-28 05:15:25,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 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 05:15:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 149203 states and 160465 transitions. [2024-11-28 05:15:25,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2024-11-28 05:15:25,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:25,600 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:25,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:15:25,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:15:25,801 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:25,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:25,801 INFO L85 PathProgramCache]: Analyzing trace with hash 104267680, now seen corresponding path program 1 times [2024-11-28 05:15:25,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:25,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596316435] [2024-11-28 05:15:25,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:25,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:26,515 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:15:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:26,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596316435] [2024-11-28 05:15:26,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596316435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:26,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:26,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:15:26,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590894569] [2024-11-28 05:15:26,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:26,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:26,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:26,518 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:26,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:15:26,519 INFO L87 Difference]: Start difference. First operand 149203 states and 160465 transitions. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 05:15:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:29,333 INFO L93 Difference]: Finished difference Result 413016 states and 444982 transitions. [2024-11-28 05:15:29,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:29,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 314 [2024-11-28 05:15:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:29,860 INFO L225 Difference]: With dead ends: 413016 [2024-11-28 05:15:29,860 INFO L226 Difference]: Without dead ends: 263815 [2024-11-28 05:15:29,932 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 05:15:29,933 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 427 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:29,933 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 444 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:15:30,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263815 states. [2024-11-28 05:15:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263815 to 254863. [2024-11-28 05:15:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254863 states, 254862 states have (on average 1.079552856055434) internal successors, (275137), 254862 states have internal predecessors, (275137), 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 05:15:34,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254863 states to 254863 states and 275137 transitions. [2024-11-28 05:15:34,915 INFO L78 Accepts]: Start accepts. Automaton has 254863 states and 275137 transitions. Word has length 314 [2024-11-28 05:15:34,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:34,916 INFO L471 AbstractCegarLoop]: Abstraction has 254863 states and 275137 transitions. [2024-11-28 05:15:34,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 3 states have internal predecessors, (314), 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 05:15:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 254863 states and 275137 transitions. [2024-11-28 05:15:34,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2024-11-28 05:15:34,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:34,981 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:34,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 05:15:34,981 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:34,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2042610103, now seen corresponding path program 1 times [2024-11-28 05:15:34,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:34,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138316153] [2024-11-28 05:15:34,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:34,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:35,861 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 05:15:35,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:35,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138316153] [2024-11-28 05:15:35,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138316153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:35,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:35,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:15:35,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562448813] [2024-11-28 05:15:35,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:35,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:15:35,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:35,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:15:35,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:15:35,864 INFO L87 Difference]: Start difference. First operand 254863 states and 275137 transitions. Second operand has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 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 05:15:39,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:39,080 INFO L93 Difference]: Finished difference Result 618205 states and 668091 transitions. [2024-11-28 05:15:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:15:39,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 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 338 [2024-11-28 05:15:39,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:39,603 INFO L225 Difference]: With dead ends: 618205 [2024-11-28 05:15:39,603 INFO L226 Difference]: Without dead ends: 363344 [2024-11-28 05:15:39,738 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 05:15:39,742 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 154 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:39,742 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 139 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 05:15:40,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363344 states. [2024-11-28 05:15:45,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363344 to 294050. [2024-11-28 05:15:45,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294050 states, 294049 states have (on average 1.0796023791953042) internal successors, (317456), 294049 states have internal predecessors, (317456), 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 05:15:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294050 states to 294050 states and 317456 transitions. [2024-11-28 05:15:46,720 INFO L78 Accepts]: Start accepts. Automaton has 294050 states and 317456 transitions. Word has length 338 [2024-11-28 05:15:46,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:46,721 INFO L471 AbstractCegarLoop]: Abstraction has 294050 states and 317456 transitions. [2024-11-28 05:15:46,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.33333333333333) internal successors, (277), 2 states have internal predecessors, (277), 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 05:15:46,721 INFO L276 IsEmpty]: Start isEmpty. Operand 294050 states and 317456 transitions. [2024-11-28 05:15:46,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-28 05:15:46,788 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:46,788 INFO L218 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:15:46,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:15:46,789 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:46,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:46,789 INFO L85 PathProgramCache]: Analyzing trace with hash -151344217, now seen corresponding path program 1 times [2024-11-28 05:15:46,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:46,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523894903] [2024-11-28 05:15:46,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:46,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:47,824 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 169 proven. 11 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 05:15:47,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523894903] [2024-11-28 05:15:47,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523894903] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:15:47,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774007514] [2024-11-28 05:15:47,825 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:47,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:47,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:47,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:48,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e286151-c339-4186-bb8f-6e9e293d922d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:15:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:48,518 INFO L256 TraceCheckSpWp]: Trace formula consists of 598 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:15:48,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 05:15:48,755 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:48,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774007514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:48,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:15:48,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2024-11-28 05:15:48,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738512128] [2024-11-28 05:15:48,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:48,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:15:48,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:48,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:15:48,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:48,758 INFO L87 Difference]: Start difference. First operand 294050 states and 317456 transitions. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 3 states have internal predecessors, (309), 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 05:15:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:52,627 INFO L93 Difference]: Finished difference Result 661006 states and 714289 transitions. [2024-11-28 05:15:52,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:15:52,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 3 states have internal predecessors, (309), 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 05:15:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:53,892 INFO L225 Difference]: With dead ends: 661006 [2024-11-28 05:15:53,892 INFO L226 Difference]: Without dead ends: 355590 [2024-11-28 05:15:53,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 357 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:53,980 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 336 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:53,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 109 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1113 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 05:15:54,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355590 states.