./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.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_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/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_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/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_6a736a68-f13c-480a-afae-b780b2dea476/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 d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:10:28,713 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:10:28,808 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:10:28,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:10:28,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:10:28,854 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:10:28,857 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:10:28,857 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:10:28,858 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:10:28,858 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:10:28,859 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:10:28,859 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:10:28,860 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:10:28,860 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:10:28,860 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:10:28,861 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:10:28,861 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:10:28,861 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:10:28,861 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:10:28,862 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:10:28,863 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:28,863 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:28,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:28,864 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:10:28,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:10:28,865 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:10:28,865 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:10:28,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:28,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:10:28,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:10:28,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:10:28,866 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_6a736a68-f13c-480a-afae-b780b2dea476/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 -> d5e8784cabcb38b73600d610d5b7e0bbbbf790f527b046ae80f9a34c4ea82403 [2024-11-28 04:10:29,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:10:29,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:10:29,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:10:29,220 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:10:29,221 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:10:29,222 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2024-11-28 04:10:32,199 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/data/4ec3f7dc4/64e8e3ce01704e8b89198dd2b79c80c4/FLAG8cedc3bd9 [2024-11-28 04:10:33,058 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:10:33,059 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c [2024-11-28 04:10:33,124 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/data/4ec3f7dc4/64e8e3ce01704e8b89198dd2b79c80c4/FLAG8cedc3bd9 [2024-11-28 04:10:33,148 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/data/4ec3f7dc4/64e8e3ce01704e8b89198dd2b79c80c4 [2024-11-28 04:10:33,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:10:33,155 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:10:33,158 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:33,158 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:10:33,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:10:33,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:33" (1/1) ... [2024-11-28 04:10:33,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddd1a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:33, skipping insertion in model container [2024-11-28 04:10:33,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:10:33" (1/1) ... [2024-11-28 04:10:33,401 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:10:35,476 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_6a736a68-f13c-480a-afae-b780b2dea476/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2024-11-28 04:10:35,527 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_6a736a68-f13c-480a-afae-b780b2dea476/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2024-11-28 04:10:35,740 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:35,752 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:10:36,940 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_6a736a68-f13c-480a-afae-b780b2dea476/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[381679,381692] [2024-11-28 04:10:36,945 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_6a736a68-f13c-480a-afae-b780b2dea476/sv-benchmarks/c/combinations/Problem05_label43+token_ring.03.cil-1.c[383339,383352] [2024-11-28 04:10:36,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:10:37,045 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:10:37,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37 WrapperNode [2024-11-28 04:10:37,047 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:10:37,048 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:37,049 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:10:37,049 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:10:37,065 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,152 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,560 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12692 [2024-11-28 04:10:37,560 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:10:37,561 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:10:37,561 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:10:37,561 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:10:37,571 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,571 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,699 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,824 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 04:10:37,824 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:37,824 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,055 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,145 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,207 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,344 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:10:38,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:10:38,348 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:10:38,348 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:10:38,349 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (1/1) ... [2024-11-28 04:10:38,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:10:38,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:10:38,388 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:10:38,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:10:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:10:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 04:10:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 04:10:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 04:10:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 04:10:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 04:10:38,429 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 04:10:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-28 04:10:38,429 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-28 04:10:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 04:10:38,429 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 04:10:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 04:10:38,430 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 04:10:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 04:10:38,430 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 04:10:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:10:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:10:38,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:10:38,572 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:10:38,575 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:10:50,353 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-28 04:10:50,354 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:10:50,452 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:10:50,455 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-28 04:10:50,456 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:50 BoogieIcfgContainer [2024-11-28 04:10:50,456 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:10:50,463 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:10:50,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:10:50,471 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:10:50,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:10:33" (1/3) ... [2024-11-28 04:10:50,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4322bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:50, skipping insertion in model container [2024-11-28 04:10:50,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:10:37" (2/3) ... [2024-11-28 04:10:50,473 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4322bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:10:50, skipping insertion in model container [2024-11-28 04:10:50,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:10:50" (3/3) ... [2024-11-28 04:10:50,476 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.03.cil-1.c [2024-11-28 04:10:50,497 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:10:50,500 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label43+token_ring.03.cil-1.c that has 8 procedures, 2346 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-28 04:10:50,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:10:50,695 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;@1ac61068, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:10:50,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:10:50,712 INFO L276 IsEmpty]: Start isEmpty. Operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-28 04:10:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:50,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:50,726 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] [2024-11-28 04:10:50,726 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:50,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 270754396, now seen corresponding path program 1 times [2024-11-28 04:10:50,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:50,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015913361] [2024-11-28 04:10:50,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:51,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015913361] [2024-11-28 04:10:51,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015913361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:51,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:51,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:10:51,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596628394] [2024-11-28 04:10:51,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:51,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:10:51,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:51,525 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:10:51,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:10:51,532 INFO L87 Difference]: Start difference. First operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-28 04:10:52,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:52,237 INFO L93 Difference]: Finished difference Result 4841 states and 8925 transitions. [2024-11-28 04:10:52,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:10:52,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:52,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:52,265 INFO L225 Difference]: With dead ends: 4841 [2024-11-28 04:10:52,265 INFO L226 Difference]: Without dead ends: 2436 [2024-11-28 04:10:52,273 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:52,276 INFO L435 NwaCegarLoop]: 4211 mSDtfsCounter, 4423 mSDsluCounter, 8508 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:52,276 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4434 Valid, 12719 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:10:52,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2024-11-28 04:10:52,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2423. [2024-11-28 04:10:52,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2377 states have (on average 1.831299957930164) internal successors, (4353), 2381 states have internal predecessors, (4353), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-28 04:10:52,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4414 transitions. [2024-11-28 04:10:52,460 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4414 transitions. Word has length 78 [2024-11-28 04:10:52,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:52,461 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4414 transitions. [2024-11-28 04:10:52,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-28 04:10:52,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4414 transitions. [2024-11-28 04:10:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:52,468 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:52,468 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] [2024-11-28 04:10:52,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:10:52,468 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:52,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash 278401112, now seen corresponding path program 1 times [2024-11-28 04:10:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:52,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682489476] [2024-11-28 04:10:52,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:52,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:52,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:52,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682489476] [2024-11-28 04:10:52,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682489476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:52,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:52,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:52,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367515900] [2024-11-28 04:10:52,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:52,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:52,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:52,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:52,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:52,758 INFO L87 Difference]: Start difference. First operand 2423 states and 4414 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:53,471 INFO L93 Difference]: Finished difference Result 2895 states and 5135 transitions. [2024-11-28 04:10:53,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:53,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:53,487 INFO L225 Difference]: With dead ends: 2895 [2024-11-28 04:10:53,487 INFO L226 Difference]: Without dead ends: 2604 [2024-11-28 04:10:53,489 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 [2024-11-28 04:10:53,491 INFO L435 NwaCegarLoop]: 4260 mSDtfsCounter, 4347 mSDsluCounter, 12752 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 17012 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:53,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 17012 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:10:53,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2024-11-28 04:10:53,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2559. [2024-11-28 04:10:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2494 states have (on average 1.8163592622293505) internal successors, (4530), 2499 states have internal predecessors, (4530), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-28 04:10:53,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4618 transitions. [2024-11-28 04:10:53,611 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4618 transitions. Word has length 78 [2024-11-28 04:10:53,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:53,612 INFO L471 AbstractCegarLoop]: Abstraction has 2559 states and 4618 transitions. [2024-11-28 04:10:53,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:53,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4618 transitions. [2024-11-28 04:10:53,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:53,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:53,619 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] [2024-11-28 04:10:53,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:10:53,620 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:53,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash -138995494, now seen corresponding path program 1 times [2024-11-28 04:10:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357851140] [2024-11-28 04:10:53,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:53,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:53,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:53,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357851140] [2024-11-28 04:10:53,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357851140] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:53,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:53,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:53,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729487749] [2024-11-28 04:10:53,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:53,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:53,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:53,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:53,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:53,890 INFO L87 Difference]: Start difference. First operand 2559 states and 4618 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:54,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:54,606 INFO L93 Difference]: Finished difference Result 3319 states and 5778 transitions. [2024-11-28 04:10:54,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:54,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:54,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:54,623 INFO L225 Difference]: With dead ends: 3319 [2024-11-28 04:10:54,623 INFO L226 Difference]: Without dead ends: 2892 [2024-11-28 04:10:54,626 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 [2024-11-28 04:10:54,628 INFO L435 NwaCegarLoop]: 4256 mSDtfsCounter, 4342 mSDsluCounter, 12740 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 16996 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:54,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 16996 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:10:54,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-11-28 04:10:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2844. [2024-11-28 04:10:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2739 states have (on average 1.7900693683826214) internal successors, (4903), 2748 states have internal predecessors, (4903), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-28 04:10:54,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 5051 transitions. [2024-11-28 04:10:54,767 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 5051 transitions. Word has length 78 [2024-11-28 04:10:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:54,767 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 5051 transitions. [2024-11-28 04:10:54,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 5051 transitions. [2024-11-28 04:10:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:54,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:54,772 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] [2024-11-28 04:10:54,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:10:54,773 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:54,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash 540276760, now seen corresponding path program 1 times [2024-11-28 04:10:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:54,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306237600] [2024-11-28 04:10:54,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:54,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:54,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:54,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306237600] [2024-11-28 04:10:54,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306237600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:54,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:54,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:54,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991845263] [2024-11-28 04:10:54,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:54,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:54,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:54,995 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:54,995 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:54,995 INFO L87 Difference]: Start difference. First operand 2844 states and 5051 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:55,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:55,955 INFO L93 Difference]: Finished difference Result 4214 states and 7161 transitions. [2024-11-28 04:10:55,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:55,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:55,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:55,978 INFO L225 Difference]: With dead ends: 4214 [2024-11-28 04:10:55,979 INFO L226 Difference]: Without dead ends: 3502 [2024-11-28 04:10:55,983 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 [2024-11-28 04:10:55,985 INFO L435 NwaCegarLoop]: 4253 mSDtfsCounter, 4337 mSDsluCounter, 12731 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16984 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:55,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16984 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:10:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2024-11-28 04:10:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3447. [2024-11-28 04:10:56,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3256 states have (on average 1.749078624078624) internal successors, (5695), 3279 states have internal predecessors, (5695), 115 states have call successors, (115), 55 states have call predecessors, (115), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-28 04:10:56,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 5987 transitions. [2024-11-28 04:10:56,161 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 5987 transitions. Word has length 78 [2024-11-28 04:10:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:56,162 INFO L471 AbstractCegarLoop]: Abstraction has 3447 states and 5987 transitions. [2024-11-28 04:10:56,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 5987 transitions. [2024-11-28 04:10:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:56,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:56,165 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] [2024-11-28 04:10:56,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:10:56,166 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:56,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:56,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1793115878, now seen corresponding path program 1 times [2024-11-28 04:10:56,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:56,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123339281] [2024-11-28 04:10:56,167 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:56,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:56,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:56,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:56,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:56,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123339281] [2024-11-28 04:10:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123339281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:56,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:56,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422572764] [2024-11-28 04:10:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:56,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:56,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:56,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:56,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:56,375 INFO L87 Difference]: Start difference. First operand 3447 states and 5987 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:57,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:57,182 INFO L93 Difference]: Finished difference Result 6325 states and 10500 transitions. [2024-11-28 04:10:57,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:57,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:57,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:57,211 INFO L225 Difference]: With dead ends: 6325 [2024-11-28 04:10:57,211 INFO L226 Difference]: Without dead ends: 5010 [2024-11-28 04:10:57,217 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 [2024-11-28 04:10:57,218 INFO L435 NwaCegarLoop]: 4248 mSDtfsCounter, 4436 mSDsluCounter, 12711 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 16959 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:57,219 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 16959 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:10:57,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2024-11-28 04:10:57,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 4710. [2024-11-28 04:10:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4337 states have (on average 1.6986396126354624) internal successors, (7367), 4406 states have internal predecessors, (7367), 203 states have call successors, (203), 103 states have call predecessors, (203), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-28 04:10:57,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 8027 transitions. [2024-11-28 04:10:57,474 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 8027 transitions. Word has length 78 [2024-11-28 04:10:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:57,474 INFO L471 AbstractCegarLoop]: Abstraction has 4710 states and 8027 transitions. [2024-11-28 04:10:57,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 8027 transitions. [2024-11-28 04:10:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:57,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:57,478 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] [2024-11-28 04:10:57,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:10:57,478 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:57,479 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1591291944, now seen corresponding path program 1 times [2024-11-28 04:10:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:57,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713987846] [2024-11-28 04:10:57,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:57,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:57,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713987846] [2024-11-28 04:10:57,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713987846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:57,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:57,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:57,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652027196] [2024-11-28 04:10:57,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:57,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:57,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:57,667 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:57,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:57,671 INFO L87 Difference]: Start difference. First operand 4710 states and 8027 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:58,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:10:58,630 INFO L93 Difference]: Finished difference Result 10404 states and 17374 transitions. [2024-11-28 04:10:58,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:10:58,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:10:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:10:58,686 INFO L225 Difference]: With dead ends: 10404 [2024-11-28 04:10:58,686 INFO L226 Difference]: Without dead ends: 7826 [2024-11-28 04:10:58,700 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 [2024-11-28 04:10:58,700 INFO L435 NwaCegarLoop]: 4244 mSDtfsCounter, 4349 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:10:58,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16943 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:10:58,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2024-11-28 04:10:59,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7257. [2024-11-28 04:10:59,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 6474 states have (on average 1.642106889094841) internal successors, (10631), 6689 states have internal predecessors, (10631), 371 states have call successors, (371), 199 states have call predecessors, (371), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-28 04:10:59,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 12395 transitions. [2024-11-28 04:10:59,489 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 12395 transitions. Word has length 78 [2024-11-28 04:10:59,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:10:59,491 INFO L471 AbstractCegarLoop]: Abstraction has 7257 states and 12395 transitions. [2024-11-28 04:10:59,491 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:10:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 12395 transitions. [2024-11-28 04:10:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:10:59,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:10:59,501 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] [2024-11-28 04:10:59,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:10:59,501 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:10:59,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:10:59,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1030592166, now seen corresponding path program 1 times [2024-11-28 04:10:59,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:10:59,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259660661] [2024-11-28 04:10:59,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:10:59,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:10:59,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:10:59,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:10:59,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:10:59,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259660661] [2024-11-28 04:10:59,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259660661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:10:59,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:10:59,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:10:59,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689733752] [2024-11-28 04:10:59,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:10:59,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:10:59,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:10:59,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:10:59,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:10:59,677 INFO L87 Difference]: Start difference. First operand 7257 states and 12395 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:11:01,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:01,033 INFO L93 Difference]: Finished difference Result 18073 states and 31624 transitions. [2024-11-28 04:11:01,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:11:01,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 78 [2024-11-28 04:11:01,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:01,108 INFO L225 Difference]: With dead ends: 18073 [2024-11-28 04:11:01,108 INFO L226 Difference]: Without dead ends: 12948 [2024-11-28 04:11:01,130 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 [2024-11-28 04:11:01,130 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4333 mSDsluCounter, 12683 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16921 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:01,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16921 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:11:01,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2024-11-28 04:11:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12609. [2024-11-28 04:11:02,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12609 states, 10860 states have (on average 1.5857274401473296) internal successors, (17221), 11529 states have internal predecessors, (17221), 691 states have call successors, (691), 391 states have call predecessors, (691), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-28 04:11:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12609 states to 12609 states and 22697 transitions. [2024-11-28 04:11:02,205 INFO L78 Accepts]: Start accepts. Automaton has 12609 states and 22697 transitions. Word has length 78 [2024-11-28 04:11:02,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:02,207 INFO L471 AbstractCegarLoop]: Abstraction has 12609 states and 22697 transitions. [2024-11-28 04:11:02,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-28 04:11:02,207 INFO L276 IsEmpty]: Start isEmpty. Operand 12609 states and 22697 transitions. [2024-11-28 04:11:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:11:02,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:02,219 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] [2024-11-28 04:11:02,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:11:02,219 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:02,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:02,220 INFO L85 PathProgramCache]: Analyzing trace with hash 230325084, now seen corresponding path program 1 times [2024-11-28 04:11:02,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:02,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977997358] [2024-11-28 04:11:02,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:02,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:11:02,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:02,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977997358] [2024-11-28 04:11:02,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977997358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:02,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:11:02,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:11:02,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961731571] [2024-11-28 04:11:02,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:02,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:11:02,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:02,311 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:11:02,311 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:02,311 INFO L87 Difference]: Start difference. First operand 12609 states and 22697 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:11:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:03,353 INFO L93 Difference]: Finished difference Result 28667 states and 51500 transitions. [2024-11-28 04:11:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:11:03,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 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 78 [2024-11-28 04:11:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:03,455 INFO L225 Difference]: With dead ends: 28667 [2024-11-28 04:11:03,456 INFO L226 Difference]: Without dead ends: 18191 [2024-11-28 04:11:03,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:11:03,506 INFO L435 NwaCegarLoop]: 4379 mSDtfsCounter, 4346 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 8693 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:03,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 8693 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:11:03,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18191 states. [2024-11-28 04:11:04,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18191 to 17348. [2024-11-28 04:11:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17348 states, 14824 states have (on average 1.54971667566109) internal successors, (22973), 15738 states have internal predecessors, (22973), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-28 04:11:04,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17348 states to 17348 states and 30172 transitions. [2024-11-28 04:11:04,913 INFO L78 Accepts]: Start accepts. Automaton has 17348 states and 30172 transitions. Word has length 78 [2024-11-28 04:11:04,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:04,915 INFO L471 AbstractCegarLoop]: Abstraction has 17348 states and 30172 transitions. [2024-11-28 04:11:04,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:11:04,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17348 states and 30172 transitions. [2024-11-28 04:11:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 04:11:04,981 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:04,981 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:04,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:11:04,982 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:04,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash 680632475, now seen corresponding path program 1 times [2024-11-28 04:11:04,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:04,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571112693] [2024-11-28 04:11:04,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:11:05,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571112693] [2024-11-28 04:11:05,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571112693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:05,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522965464] [2024-11-28 04:11:05,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:05,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:05,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:05,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:11:05,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:05,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:05,358 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 04:11:05,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:05,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522965464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:05,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:05,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 04:11:05,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085613886] [2024-11-28 04:11:05,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:05,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:05,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:05,469 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:05,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:05,469 INFO L87 Difference]: Start difference. First operand 17348 states and 30172 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:07,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:07,718 INFO L93 Difference]: Finished difference Result 47431 states and 82416 transitions. [2024-11-28 04:11:07,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:07,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-28 04:11:07,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:07,951 INFO L225 Difference]: With dead ends: 47431 [2024-11-28 04:11:07,952 INFO L226 Difference]: Without dead ends: 32216 [2024-11-28 04:11:08,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:08,026 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4145 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:08,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:08,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32216 states. [2024-11-28 04:11:10,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32216 to 32114. [2024-11-28 04:11:10,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32114 states, 27124 states have (on average 1.5221206311753428) internal successors, (41286), 28949 states have internal predecessors, (41286), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-28 04:11:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32114 states to 32114 states and 55511 transitions. [2024-11-28 04:11:10,186 INFO L78 Accepts]: Start accepts. Automaton has 32114 states and 55511 transitions. Word has length 126 [2024-11-28 04:11:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:10,187 INFO L471 AbstractCegarLoop]: Abstraction has 32114 states and 55511 transitions. [2024-11-28 04:11:10,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 32114 states and 55511 transitions. [2024-11-28 04:11:10,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 04:11:10,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:10,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:10,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:11:10,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 04:11:10,471 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:10,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 118010201, now seen corresponding path program 1 times [2024-11-28 04:11:10,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:10,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524469627] [2024-11-28 04:11:10,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:10,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,585 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:11:10,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524469627] [2024-11-28 04:11:10,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524469627] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:10,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039233156] [2024-11-28 04:11:10,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:10,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:10,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:10,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:10,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:11:10,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:10,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:10,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:11:10,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:10,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039233156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:10,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:10,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 04:11:10,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699059357] [2024-11-28 04:11:10,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:10,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:10,842 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:10,842 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:10,842 INFO L87 Difference]: Start difference. First operand 32114 states and 55511 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:13,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:11:13,782 INFO L93 Difference]: Finished difference Result 91383 states and 158301 transitions. [2024-11-28 04:11:13,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:11:13,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-28 04:11:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:11:14,192 INFO L225 Difference]: With dead ends: 91383 [2024-11-28 04:11:14,192 INFO L226 Difference]: Without dead ends: 61402 [2024-11-28 04:11:14,315 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:14,316 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4139 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:11:14,316 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:11:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61402 states. [2024-11-28 04:11:18,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61402 to 61202. [2024-11-28 04:11:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61202 states, 51330 states have (on average 1.504461328657705) internal successors, (77224), 54977 states have internal predecessors, (77224), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-28 04:11:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61202 states to 61202 states and 105401 transitions. [2024-11-28 04:11:19,002 INFO L78 Accepts]: Start accepts. Automaton has 61202 states and 105401 transitions. Word has length 126 [2024-11-28 04:11:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:11:19,003 INFO L471 AbstractCegarLoop]: Abstraction has 61202 states and 105401 transitions. [2024-11-28 04:11:19,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:11:19,003 INFO L276 IsEmpty]: Start isEmpty. Operand 61202 states and 105401 transitions. [2024-11-28 04:11:19,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-28 04:11:19,087 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:11:19,087 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:11:19,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:11:19,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:11:19,288 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:11:19,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:11:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1923962729, now seen corresponding path program 1 times [2024-11-28 04:11:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:11:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323966439] [2024-11-28 04:11:19,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:11:19,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:19,379 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:11:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:11:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323966439] [2024-11-28 04:11:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323966439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:11:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764975783] [2024-11-28 04:11:19,381 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:11:19,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:11:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:11:19,383 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:11:19,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6a736a68-f13c-480a-afae-b780b2dea476/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:11:19,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:11:19,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:11:19,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:11:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:11:19,532 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:11:19,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764975783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:11:19,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:11:19,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:11:19,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234794758] [2024-11-28 04:11:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:11:19,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:11:19,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:11:19,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:11:19,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:11:19,534 INFO L87 Difference]: Start difference. First operand 61202 states and 105401 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)