./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/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 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:06:18,106 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:06:18,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:06:18,193 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:06:18,193 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:06:18,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:06:18,230 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:06:18,231 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:06:18,231 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:06:18,231 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:06:18,233 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:06:18,233 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:06:18,233 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:06:18,233 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:06:18,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:06:18,234 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:06:18,235 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:06:18,235 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:06:18,236 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:18,236 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:18,237 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:06:18,237 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:18,237 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:06:18,238 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:06:18,238 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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/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 -> 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 [2024-11-27 20:06:18,609 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:06:18,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:06:18,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:06:18,627 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:06:18,627 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:06:18,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2024-11-27 20:06:21,700 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/data/c5bb245f6/8372fab2e6b64f74815250e508c83bee/FLAG8aa42983e [2024-11-27 20:06:22,065 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:06:22,066 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2024-11-27 20:06:22,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/data/c5bb245f6/8372fab2e6b64f74815250e508c83bee/FLAG8aa42983e [2024-11-27 20:06:22,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/data/c5bb245f6/8372fab2e6b64f74815250e508c83bee [2024-11-27 20:06:22,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:06:22,119 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:06:22,122 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:22,122 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:06:22,127 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:06:22,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68bde944 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22, skipping insertion in model container [2024-11-27 20:06:22,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,179 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:06:22,351 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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2024-11-27 20:06:22,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:22,511 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:06:22,519 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_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2024-11-27 20:06:22,565 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:06:22,583 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:06:22,584 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22 WrapperNode [2024-11-27 20:06:22,584 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:06:22,585 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:22,585 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:06:22,585 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:06:22,592 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,609 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,667 INFO L138 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 516 [2024-11-27 20:06:22,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:06:22,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:06:22,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:06:22,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:06:22,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,719 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]. [2024-11-27 20:06:22,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,720 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,733 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,748 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,750 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,754 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:06:22,755 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:06:22,755 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:06:22,755 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:06:22,756 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (1/1) ... [2024-11-27 20:06:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:06:22,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:06:22,819 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:06:22,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89e77980-ffa1-4d91-88d6-bf4dd27ab73b/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:06:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:06:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-27 20:06:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-27 20:06:22,854 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-27 20:06:22,854 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-27 20:06:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-27 20:06:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-27 20:06:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-27 20:06:22,855 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:06:22,855 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-27 20:06:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-27 20:06:22,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:06:22,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:06:22,979 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:06:22,982 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:06:23,769 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-11-27 20:06:23,769 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:06:23,793 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:06:23,793 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-27 20:06:23,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:23 BoogieIcfgContainer [2024-11-27 20:06:23,794 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:06:23,800 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:06:23,801 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:06:23,806 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:06:23,807 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:06:22" (1/3) ... [2024-11-27 20:06:23,808 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a503d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:23, skipping insertion in model container [2024-11-27 20:06:23,808 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:06:22" (2/3) ... [2024-11-27 20:06:23,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a503d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:06:23, skipping insertion in model container [2024-11-27 20:06:23,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:06:23" (3/3) ... [2024-11-27 20:06:23,811 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2024-11-27 20:06:23,829 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:06:23,831 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.06.cil-1.c that has 8 procedures, 238 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-11-27 20:06:23,919 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:06:23,938 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;@3bd63a15, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:06:23,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:06:23,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 208 states have (on average 1.6394230769230769) internal successors, (341), 211 states have internal predecessors, (341), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-27 20:06:23,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:23,959 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:23,960 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] [2024-11-27 20:06:23,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:23,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:23,969 INFO L85 PathProgramCache]: Analyzing trace with hash 502261020, now seen corresponding path program 1 times [2024-11-27 20:06:23,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:23,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284923965] [2024-11-27 20:06:23,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:23,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:24,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:24,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:24,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284923965] [2024-11-27 20:06:24,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284923965] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:24,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:24,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:06:24,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286598210] [2024-11-27 20:06:24,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:24,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:06:24,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:24,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:06:24,539 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:24,542 INFO L87 Difference]: Start difference. First operand has 238 states, 208 states have (on average 1.6394230769230769) internal successors, (341), 211 states have internal predecessors, (341), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:24,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:24,651 INFO L93 Difference]: Finished difference Result 468 states and 761 transitions. [2024-11-27 20:06:24,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:06:24,654 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:24,674 INFO L225 Difference]: With dead ends: 468 [2024-11-27 20:06:24,674 INFO L226 Difference]: Without dead ends: 232 [2024-11-27 20:06:24,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:06:24,685 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 357 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:24,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 361 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:06:24,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-11-27 20:06:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-11-27 20:06:24,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 203 states have (on average 1.5566502463054188) internal successors, (316), 205 states have internal predecessors, (316), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 20:06:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2024-11-27 20:06:24,776 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 110 [2024-11-27 20:06:24,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:24,778 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2024-11-27 20:06:24,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2024-11-27 20:06:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:24,786 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:24,787 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] [2024-11-27 20:06:24,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:06:24,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:24,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:24,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1759312230, now seen corresponding path program 1 times [2024-11-27 20:06:24,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:24,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65842574] [2024-11-27 20:06:24,791 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:24,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:25,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:25,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65842574] [2024-11-27 20:06:25,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65842574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:25,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:25,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:06:25,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031481202] [2024-11-27 20:06:25,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:25,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:06:25,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:25,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:06:25,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:06:25,260 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:26,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:26,066 INFO L93 Difference]: Finished difference Result 692 states and 1080 transitions. [2024-11-27 20:06:26,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:06:26,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:26,077 INFO L225 Difference]: With dead ends: 692 [2024-11-27 20:06:26,077 INFO L226 Difference]: Without dead ends: 474 [2024-11-27 20:06:26,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:26,084 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 653 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:26,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 975 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:26,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-11-27 20:06:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 455. [2024-11-27 20:06:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 404 states have (on average 1.5693069306930694) internal successors, (634), 407 states have internal predecessors, (634), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-11-27 20:06:26,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 707 transitions. [2024-11-27 20:06:26,170 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 707 transitions. Word has length 110 [2024-11-27 20:06:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:26,170 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 707 transitions. [2024-11-27 20:06:26,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 707 transitions. [2024-11-27 20:06:26,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:26,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:26,174 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] [2024-11-27 20:06:26,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:06:26,174 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:26,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:26,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1191439766, now seen corresponding path program 1 times [2024-11-27 20:06:26,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:26,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957063763] [2024-11-27 20:06:26,175 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:26,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:26,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:26,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957063763] [2024-11-27 20:06:26,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957063763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:26,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:26,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:26,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751712269] [2024-11-27 20:06:26,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:26,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:26,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:26,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:26,574 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:26,575 INFO L87 Difference]: Start difference. First operand 455 states and 707 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:27,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:27,624 INFO L93 Difference]: Finished difference Result 1179 states and 1851 transitions. [2024-11-27 20:06:27,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:27,626 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:27,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:27,633 INFO L225 Difference]: With dead ends: 1179 [2024-11-27 20:06:27,633 INFO L226 Difference]: Without dead ends: 738 [2024-11-27 20:06:27,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:27,636 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 650 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:27,637 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1863 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:06:27,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-27 20:06:27,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 663. [2024-11-27 20:06:27,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 590 states have (on average 1.5627118644067797) internal successors, (922), 594 states have internal predecessors, (922), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (54), 51 states have call predecessors, (54), 50 states have call successors, (54) [2024-11-27 20:06:27,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1028 transitions. [2024-11-27 20:06:27,725 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1028 transitions. Word has length 110 [2024-11-27 20:06:27,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:27,727 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1028 transitions. [2024-11-27 20:06:27,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:27,727 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1028 transitions. [2024-11-27 20:06:27,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:27,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:27,730 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] [2024-11-27 20:06:27,730 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:06:27,730 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:27,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:27,735 INFO L85 PathProgramCache]: Analyzing trace with hash 307930776, now seen corresponding path program 1 times [2024-11-27 20:06:27,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:27,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316446929] [2024-11-27 20:06:27,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:27,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:27,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:28,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:28,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:28,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316446929] [2024-11-27 20:06:28,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316446929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:28,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:28,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537405463] [2024-11-27 20:06:28,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:28,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:28,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:28,022 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:28,022 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:28,022 INFO L87 Difference]: Start difference. First operand 663 states and 1028 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:28,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:28,790 INFO L93 Difference]: Finished difference Result 1837 states and 2881 transitions. [2024-11-27 20:06:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:28,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:28,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:28,798 INFO L225 Difference]: With dead ends: 1837 [2024-11-27 20:06:28,798 INFO L226 Difference]: Without dead ends: 1188 [2024-11-27 20:06:28,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:28,801 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 666 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:28,801 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1294 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 20:06:28,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-11-27 20:06:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1104. [2024-11-27 20:06:28,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 985 states have (on average 1.5644670050761422) internal successors, (1541), 993 states have internal predecessors, (1541), 82 states have call successors, (82), 31 states have call predecessors, (82), 36 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2024-11-27 20:06:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1719 transitions. [2024-11-27 20:06:28,888 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1719 transitions. Word has length 110 [2024-11-27 20:06:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:28,889 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1719 transitions. [2024-11-27 20:06:28,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:28,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1719 transitions. [2024-11-27 20:06:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:28,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:28,891 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] [2024-11-27 20:06:28,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:06:28,892 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:28,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:28,892 INFO L85 PathProgramCache]: Analyzing trace with hash 279430486, now seen corresponding path program 1 times [2024-11-27 20:06:28,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:28,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205115602] [2024-11-27 20:06:28,893 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:28,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:29,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:29,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:29,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205115602] [2024-11-27 20:06:29,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205115602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:29,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:29,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:29,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660706205] [2024-11-27 20:06:29,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:29,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:29,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:29,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:29,074 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:29,074 INFO L87 Difference]: Start difference. First operand 1104 states and 1719 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:30,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:30,036 INFO L93 Difference]: Finished difference Result 3232 states and 5102 transitions. [2024-11-27 20:06:30,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:30,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:30,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:30,052 INFO L225 Difference]: With dead ends: 3232 [2024-11-27 20:06:30,052 INFO L226 Difference]: Without dead ends: 2142 [2024-11-27 20:06:30,056 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:30,057 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 637 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:30,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1821 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:30,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2024-11-27 20:06:30,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2046. [2024-11-27 20:06:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1829 states have (on average 1.5740841990158556) internal successors, (2879), 1851 states have internal predecessors, (2879), 142 states have call successors, (142), 55 states have call predecessors, (142), 74 states have return successors, (204), 147 states have call predecessors, (204), 140 states have call successors, (204) [2024-11-27 20:06:30,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3225 transitions. [2024-11-27 20:06:30,260 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3225 transitions. Word has length 110 [2024-11-27 20:06:30,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:30,260 INFO L471 AbstractCegarLoop]: Abstraction has 2046 states and 3225 transitions. [2024-11-27 20:06:30,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:30,261 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3225 transitions. [2024-11-27 20:06:30,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:30,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:30,265 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] [2024-11-27 20:06:30,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:06:30,265 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:30,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2138473580, now seen corresponding path program 1 times [2024-11-27 20:06:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819150778] [2024-11-27 20:06:30,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:30,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:30,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:30,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819150778] [2024-11-27 20:06:30,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819150778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:30,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:30,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:30,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104593159] [2024-11-27 20:06:30,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:30,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:30,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:30,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:30,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:30,466 INFO L87 Difference]: Start difference. First operand 2046 states and 3225 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:31,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:31,486 INFO L93 Difference]: Finished difference Result 6262 states and 10066 transitions. [2024-11-27 20:06:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:31,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:31,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:31,510 INFO L225 Difference]: With dead ends: 6262 [2024-11-27 20:06:31,510 INFO L226 Difference]: Without dead ends: 4230 [2024-11-27 20:06:31,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:31,518 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 632 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:31,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1809 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:31,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2024-11-27 20:06:31,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4101. [2024-11-27 20:06:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 3670 states have (on average 1.5910081743869209) internal successors, (5839), 3738 states have internal predecessors, (5839), 262 states have call successors, (262), 103 states have call predecessors, (262), 168 states have return successors, (516), 275 states have call predecessors, (516), 260 states have call successors, (516) [2024-11-27 20:06:31,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6617 transitions. [2024-11-27 20:06:31,869 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6617 transitions. Word has length 110 [2024-11-27 20:06:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:31,869 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 6617 transitions. [2024-11-27 20:06:31,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6617 transitions. [2024-11-27 20:06:31,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:31,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:31,874 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] [2024-11-27 20:06:31,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:06:31,874 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:31,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:31,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1385760150, now seen corresponding path program 1 times [2024-11-27 20:06:31,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:31,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885966055] [2024-11-27 20:06:31,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:31,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:31,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:32,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:32,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:32,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885966055] [2024-11-27 20:06:32,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885966055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:32,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:32,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:32,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821813547] [2024-11-27 20:06:32,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:32,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:32,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:32,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:32,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:32,066 INFO L87 Difference]: Start difference. First operand 4101 states and 6617 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:33,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:33,244 INFO L93 Difference]: Finished difference Result 12947 states and 21496 transitions. [2024-11-27 20:06:33,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:33,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:33,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:33,300 INFO L225 Difference]: With dead ends: 12947 [2024-11-27 20:06:33,301 INFO L226 Difference]: Without dead ends: 8860 [2024-11-27 20:06:33,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:33,316 INFO L435 NwaCegarLoop]: 449 mSDtfsCounter, 627 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:33,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1797 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2024-11-27 20:06:33,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8670. [2024-11-27 20:06:33,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 7757 states have (on average 1.6123501353616088) internal successors, (12507), 7971 states have internal predecessors, (12507), 502 states have call successors, (502), 199 states have call predecessors, (502), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2024-11-27 20:06:34,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 14533 transitions. [2024-11-27 20:06:34,013 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 14533 transitions. Word has length 110 [2024-11-27 20:06:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:34,014 INFO L471 AbstractCegarLoop]: Abstraction has 8670 states and 14533 transitions. [2024-11-27 20:06:34,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:34,014 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 14533 transitions. [2024-11-27 20:06:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:34,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:34,022 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] [2024-11-27 20:06:34,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:06:34,023 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:34,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:34,023 INFO L85 PathProgramCache]: Analyzing trace with hash 391066452, now seen corresponding path program 1 times [2024-11-27 20:06:34,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:34,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54603609] [2024-11-27 20:06:34,024 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:34,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:34,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:34,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:34,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54603609] [2024-11-27 20:06:34,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54603609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:34,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:34,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698419724] [2024-11-27 20:06:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:34,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:34,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:34,230 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:34,230 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:34,230 INFO L87 Difference]: Start difference. First operand 8670 states and 14533 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:35,796 INFO L93 Difference]: Finished difference Result 29482 states and 51199 transitions. [2024-11-27 20:06:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:35,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:35,931 INFO L225 Difference]: With dead ends: 29482 [2024-11-27 20:06:35,931 INFO L226 Difference]: Without dead ends: 20826 [2024-11-27 20:06:35,962 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:35,963 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 816 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:35,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1772 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:35,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2024-11-27 20:06:37,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 18927. [2024-11-27 20:06:37,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18927 states, 16920 states have (on average 1.6375295508274232) internal successors, (27707), 17588 states have internal predecessors, (27707), 950 states have call successors, (950), 391 states have call predecessors, (950), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2024-11-27 20:06:37,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18927 states to 18927 states and 33701 transitions. [2024-11-27 20:06:37,523 INFO L78 Accepts]: Start accepts. Automaton has 18927 states and 33701 transitions. Word has length 110 [2024-11-27 20:06:37,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:37,523 INFO L471 AbstractCegarLoop]: Abstraction has 18927 states and 33701 transitions. [2024-11-27 20:06:37,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:37,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18927 states and 33701 transitions. [2024-11-27 20:06:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:37,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:37,536 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] [2024-11-27 20:06:37,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:06:37,537 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:37,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:37,540 INFO L85 PathProgramCache]: Analyzing trace with hash -195209770, now seen corresponding path program 1 times [2024-11-27 20:06:37,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:37,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405628831] [2024-11-27 20:06:37,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:37,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:37,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:37,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:37,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:37,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405628831] [2024-11-27 20:06:37,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405628831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:37,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:37,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902028060] [2024-11-27 20:06:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:37,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:37,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:37,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:37,704 INFO L87 Difference]: Start difference. First operand 18927 states and 33701 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:40,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:40,422 INFO L93 Difference]: Finished difference Result 64593 states and 121589 transitions. [2024-11-27 20:06:40,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:40,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:40,695 INFO L225 Difference]: With dead ends: 64593 [2024-11-27 20:06:40,695 INFO L226 Difference]: Without dead ends: 45680 [2024-11-27 20:06:40,779 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:40,781 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 669 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:40,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1756 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:06:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45680 states. [2024-11-27 20:06:44,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45680 to 41928. [2024-11-27 20:06:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41928 states, 37279 states have (on average 1.6573137691461681) internal successors, (61783), 39341 states have internal predecessors, (61783), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2024-11-27 20:06:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41928 states to 41928 states and 81793 transitions. [2024-11-27 20:06:44,518 INFO L78 Accepts]: Start accepts. Automaton has 41928 states and 81793 transitions. Word has length 110 [2024-11-27 20:06:44,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:44,518 INFO L471 AbstractCegarLoop]: Abstraction has 41928 states and 81793 transitions. [2024-11-27 20:06:44,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 41928 states and 81793 transitions. [2024-11-27 20:06:44,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:44,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:44,540 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] [2024-11-27 20:06:44,540 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:06:44,540 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:44,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:44,542 INFO L85 PathProgramCache]: Analyzing trace with hash 2141182740, now seen corresponding path program 1 times [2024-11-27 20:06:44,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959758100] [2024-11-27 20:06:44,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:44,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:44,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:44,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:44,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959758100] [2024-11-27 20:06:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959758100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:44,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:44,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:44,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969938200] [2024-11-27 20:06:44,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:44,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:44,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:44,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:44,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:44,709 INFO L87 Difference]: Start difference. First operand 41928 states and 81793 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:49,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:06:49,892 INFO L93 Difference]: Finished difference Result 143660 states and 305267 transitions. [2024-11-27 20:06:49,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:06:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-11-27 20:06:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:06:50,685 INFO L225 Difference]: With dead ends: 143660 [2024-11-27 20:06:50,685 INFO L226 Difference]: Without dead ends: 101746 [2024-11-27 20:06:51,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:06:51,069 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 746 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:06:51,069 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1748 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:06:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101746 states. [2024-11-27 20:06:57,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101746 to 96333. [2024-11-27 20:06:57,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96333 states, 85006 states have (on average 1.676293438110251) internal successors, (142495), 91314 states have internal predecessors, (142495), 3478 states have call successors, (3478), 1543 states have call predecessors, (3478), 7848 states have return successors, (69012), 3731 states have call predecessors, (69012), 3476 states have call successors, (69012) [2024-11-27 20:06:58,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96333 states to 96333 states and 214985 transitions. [2024-11-27 20:06:58,261 INFO L78 Accepts]: Start accepts. Automaton has 96333 states and 214985 transitions. Word has length 110 [2024-11-27 20:06:58,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:06:58,262 INFO L471 AbstractCegarLoop]: Abstraction has 96333 states and 214985 transitions. [2024-11-27 20:06:58,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:06:58,263 INFO L276 IsEmpty]: Start isEmpty. Operand 96333 states and 214985 transitions. [2024-11-27 20:06:58,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-27 20:06:58,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:06:58,316 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] [2024-11-27 20:06:58,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:06:58,317 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:06:58,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:06:58,318 INFO L85 PathProgramCache]: Analyzing trace with hash -277301738, now seen corresponding path program 1 times [2024-11-27 20:06:58,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:06:58,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194406660] [2024-11-27 20:06:58,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:06:58,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:06:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:06:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:06:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:06:58,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194406660] [2024-11-27 20:06:58,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194406660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:06:58,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:06:58,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:06:58,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725362154] [2024-11-27 20:06:58,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:06:58,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:06:58,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:06:58,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:06:58,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:06:58,533 INFO L87 Difference]: Start difference. First operand 96333 states and 214985 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)