./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/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 b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:29:21,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:29:21,944 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:29:21,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:29:21,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:29:22,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:29:22,006 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:29:22,006 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:29:22,007 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:29:22,007 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:29:22,008 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:29:22,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:29:22,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:29:22,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:29:22,010 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:29:22,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:29:22,011 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:22,011 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:22,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:22,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:22,013 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:29:22,013 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:29:22,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:29:22,014 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:29:22,014 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:22,014 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:29:22,014 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:29:22,014 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:29:22,014 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:29:22,015 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:29:22,015 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:29:22,015 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:29:22,015 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:29:22,016 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:29:22,016 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:29:22,016 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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/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 -> b46aca8db2cbcc86d5081568217304f7c2d4c7c32814797814cc0c73772f5e13 [2024-11-27 20:29:22,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:29:22,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:29:22,408 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:29:22,410 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:29:22,410 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:29:22,412 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2024-11-27 20:29:25,740 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/data/0fae7d8cd/23cf874b2b38432c96313e1c7fec11c6/FLAG7d9fbf3d4 [2024-11-27 20:29:26,681 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:29:26,682 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c [2024-11-27 20:29:26,742 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/data/0fae7d8cd/23cf874b2b38432c96313e1c7fec11c6/FLAG7d9fbf3d4 [2024-11-27 20:29:26,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/data/0fae7d8cd/23cf874b2b38432c96313e1c7fec11c6 [2024-11-27 20:29:26,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:29:26,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:29:26,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:26,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:29:26,785 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:29:26,788 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:26" (1/1) ... [2024-11-27 20:29:26,789 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@734a00e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:26, skipping insertion in model container [2024-11-27 20:29:26,789 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:29:26" (1/1) ... [2024-11-27 20:29:27,029 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:29:29,620 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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2024-11-27 20:29:29,689 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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2024-11-27 20:29:29,912 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:29,929 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:29:31,246 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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[376251,376264] [2024-11-27 20:29:31,261 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_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/sv-benchmarks/c/combinations/Problem05_label41+token_ring.02.cil-1.c[383339,383352] [2024-11-27 20:29:31,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:29:31,368 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:29:31,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31 WrapperNode [2024-11-27 20:29:31,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:29:31,371 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:31,371 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:29:31,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:29:31,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:31,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,016 INFO L138 Inliner]: procedures = 48, calls = 47, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 12627 [2024-11-27 20:29:32,017 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:29:32,018 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:29:32,018 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:29:32,018 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:29:32,029 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,030 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,211 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:29:32,212 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,212 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,509 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,528 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,694 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:29:32,772 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:29:32,773 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:29:32,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:29:32,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (1/1) ... [2024-11-27 20:29:32,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:29:32,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:32,820 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:29:32,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:29:32,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:29:32,862 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-27 20:29:32,862 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-27 20:29:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-27 20:29:32,863 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-27 20:29:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-27 20:29:32,863 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-27 20:29:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-27 20:29:32,863 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-27 20:29:32,863 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-27 20:29:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-27 20:29:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:29:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-27 20:29:32,864 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-27 20:29:32,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:29:32,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:29:33,028 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:29:33,032 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:29:46,172 INFO L? ?]: Removed 1695 outVars from TransFormulas that were not future-live. [2024-11-27 20:29:46,172 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:29:46,271 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:29:46,275 INFO L312 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-27 20:29:46,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:46 BoogieIcfgContainer [2024-11-27 20:29:46,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:29:46,280 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:29:46,281 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:29:46,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:29:46,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:29:26" (1/3) ... [2024-11-27 20:29:46,289 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ac4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:46, skipping insertion in model container [2024-11-27 20:29:46,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:29:31" (2/3) ... [2024-11-27 20:29:46,290 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458ac4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:29:46, skipping insertion in model container [2024-11-27 20:29:46,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:29:46" (3/3) ... [2024-11-27 20:29:46,292 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label41+token_ring.02.cil-1.c [2024-11-27 20:29:46,311 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:29:46,314 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label41+token_ring.02.cil-1.c that has 7 procedures, 2313 locations, 1 initial locations, 6 loop locations, and 2 error locations. [2024-11-27 20:29:46,463 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:29:46,484 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;@541b8a88, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:29:46,484 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 20:29:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand has 2313 states, 2289 states have (on average 1.8571428571428572) internal successors, (4251), 2291 states have internal predecessors, (4251), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-27 20:29:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:46,514 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:46,515 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] [2024-11-27 20:29:46,516 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:46,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:46,523 INFO L85 PathProgramCache]: Analyzing trace with hash 49478430, now seen corresponding path program 1 times [2024-11-27 20:29:46,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:46,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889829076] [2024-11-27 20:29:46,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:46,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:46,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:47,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:47,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:47,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889829076] [2024-11-27 20:29:47,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889829076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:47,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:47,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:29:47,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621642573] [2024-11-27 20:29:47,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:47,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:29:47,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:47,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:29:47,191 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:29:47,205 INFO L87 Difference]: Start difference. First operand has 2313 states, 2289 states have (on average 1.8571428571428572) internal successors, (4251), 2291 states have internal predecessors, (4251), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:48,119 INFO L93 Difference]: Finished difference Result 4742 states and 8750 transitions. [2024-11-27 20:29:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:29:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:48,168 INFO L225 Difference]: With dead ends: 4742 [2024-11-27 20:29:48,170 INFO L226 Difference]: Without dead ends: 2369 [2024-11-27 20:29:48,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:48,191 INFO L435 NwaCegarLoop]: 4168 mSDtfsCounter, 4324 mSDsluCounter, 8395 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 12563 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:48,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 12563 Invalid, 258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:29:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2369 states. [2024-11-27 20:29:48,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2369 to 2360. [2024-11-27 20:29:48,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2360 states, 2318 states have (on average 1.8347713546160482) internal successors, (4253), 2321 states have internal predecessors, (4253), 27 states have call successors, (27), 12 states have call predecessors, (27), 13 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2024-11-27 20:29:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2360 states to 2360 states and 4308 transitions. [2024-11-27 20:29:48,457 INFO L78 Accepts]: Start accepts. Automaton has 2360 states and 4308 transitions. Word has length 66 [2024-11-27 20:29:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:48,459 INFO L471 AbstractCegarLoop]: Abstraction has 2360 states and 4308 transitions. [2024-11-27 20:29:48,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 2360 states and 4308 transitions. [2024-11-27 20:29:48,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:48,465 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:48,466 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] [2024-11-27 20:29:48,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:29:48,466 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:48,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:48,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1312059230, now seen corresponding path program 1 times [2024-11-27 20:29:48,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:48,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276541356] [2024-11-27 20:29:48,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:48,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:49,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276541356] [2024-11-27 20:29:49,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276541356] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:49,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:49,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:29:49,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830552495] [2024-11-27 20:29:49,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:49,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:29:49,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:49,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:29:49,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:49,012 INFO L87 Difference]: Start difference. First operand 2360 states and 4308 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:49,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:49,756 INFO L93 Difference]: Finished difference Result 2729 states and 4854 transitions. [2024-11-27 20:29:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:49,756 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:49,772 INFO L225 Difference]: With dead ends: 2729 [2024-11-27 20:29:49,772 INFO L226 Difference]: Without dead ends: 2500 [2024-11-27 20:29:49,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:49,776 INFO L435 NwaCegarLoop]: 4183 mSDtfsCounter, 4247 mSDsluCounter, 12513 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4257 SdHoareTripleChecker+Valid, 16696 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:49,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4257 Valid, 16696 Invalid, 444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:29:49,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2024-11-27 20:29:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 2467. [2024-11-27 20:29:49,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2467 states, 2407 states have (on average 1.8209389281262982) internal successors, (4383), 2411 states have internal predecessors, (4383), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2024-11-27 20:29:49,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2467 states to 2467 states and 4463 transitions. [2024-11-27 20:29:49,883 INFO L78 Accepts]: Start accepts. Automaton has 2467 states and 4463 transitions. Word has length 66 [2024-11-27 20:29:49,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:49,883 INFO L471 AbstractCegarLoop]: Abstraction has 2467 states and 4463 transitions. [2024-11-27 20:29:49,883 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:49,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2467 states and 4463 transitions. [2024-11-27 20:29:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:49,886 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:49,887 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] [2024-11-27 20:29:49,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:29:49,887 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:49,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:49,888 INFO L85 PathProgramCache]: Analyzing trace with hash 226280800, now seen corresponding path program 1 times [2024-11-27 20:29:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186345858] [2024-11-27 20:29:49,888 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:50,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:50,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186345858] [2024-11-27 20:29:50,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186345858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:50,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:50,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:29:50,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973477609] [2024-11-27 20:29:50,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:50,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:29:50,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:50,087 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:29:50,087 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:50,087 INFO L87 Difference]: Start difference. First operand 2467 states and 4463 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:50,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:50,743 INFO L93 Difference]: Finished difference Result 3060 states and 5338 transitions. [2024-11-27 20:29:50,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:50,743 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:50,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:50,760 INFO L225 Difference]: With dead ends: 3060 [2024-11-27 20:29:50,760 INFO L226 Difference]: Without dead ends: 2724 [2024-11-27 20:29:50,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:50,764 INFO L435 NwaCegarLoop]: 4100 mSDtfsCounter, 4254 mSDsluCounter, 12329 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 16429 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:50,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 16429 Invalid, 373 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [34 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:29:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2724 states. [2024-11-27 20:29:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2724 to 2690. [2024-11-27 20:29:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2690 states, 2592 states have (on average 1.7955246913580247) internal successors, (4654), 2600 states have internal predecessors, (4654), 60 states have call successors, (60), 30 states have call predecessors, (60), 36 states have return successors, (76), 63 states have call predecessors, (76), 60 states have call successors, (76) [2024-11-27 20:29:50,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 4790 transitions. [2024-11-27 20:29:50,899 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 4790 transitions. Word has length 66 [2024-11-27 20:29:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:50,900 INFO L471 AbstractCegarLoop]: Abstraction has 2690 states and 4790 transitions. [2024-11-27 20:29:50,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 4790 transitions. [2024-11-27 20:29:50,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:50,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:50,905 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] [2024-11-27 20:29:50,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:29:50,905 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:50,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1802305310, now seen corresponding path program 1 times [2024-11-27 20:29:50,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:50,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128188284] [2024-11-27 20:29:50,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:50,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:51,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:51,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:51,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128188284] [2024-11-27 20:29:51,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128188284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:51,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:51,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:29:51,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664244826] [2024-11-27 20:29:51,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:51,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:29:51,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:51,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:29:51,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:51,138 INFO L87 Difference]: Start difference. First operand 2690 states and 4790 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:51,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:51,921 INFO L93 Difference]: Finished difference Result 3781 states and 6404 transitions. [2024-11-27 20:29:51,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:51,922 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:51,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:51,947 INFO L225 Difference]: With dead ends: 3781 [2024-11-27 20:29:51,947 INFO L226 Difference]: Without dead ends: 3222 [2024-11-27 20:29:51,951 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:51,952 INFO L435 NwaCegarLoop]: 4169 mSDtfsCounter, 4246 mSDsluCounter, 12468 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4255 SdHoareTripleChecker+Valid, 16637 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:51,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4255 Valid, 16637 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:29:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2024-11-27 20:29:52,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3120. [2024-11-27 20:29:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 2944 states have (on average 1.7540760869565217) internal successors, (5164), 2966 states have internal predecessors, (5164), 100 states have call successors, (100), 54 states have call predecessors, (100), 74 states have return successors, (164), 107 states have call predecessors, (164), 100 states have call successors, (164) [2024-11-27 20:29:52,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 5428 transitions. [2024-11-27 20:29:52,138 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 5428 transitions. Word has length 66 [2024-11-27 20:29:52,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:52,139 INFO L471 AbstractCegarLoop]: Abstraction has 3120 states and 5428 transitions. [2024-11-27 20:29:52,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:52,139 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 5428 transitions. [2024-11-27 20:29:52,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:52,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:52,141 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] [2024-11-27 20:29:52,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:29:52,142 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:52,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:52,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1817824028, now seen corresponding path program 1 times [2024-11-27 20:29:52,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:52,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308482167] [2024-11-27 20:29:52,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:52,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:52,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:52,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308482167] [2024-11-27 20:29:52,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308482167] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:52,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:52,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:29:52,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812283048] [2024-11-27 20:29:52,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:52,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:29:52,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:52,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:29:52,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:52,307 INFO L87 Difference]: Start difference. First operand 3120 states and 5428 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:53,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:53,063 INFO L93 Difference]: Finished difference Result 5095 states and 8400 transitions. [2024-11-27 20:29:53,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:29:53,063 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:53,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:53,088 INFO L225 Difference]: With dead ends: 5095 [2024-11-27 20:29:53,088 INFO L226 Difference]: Without dead ends: 4106 [2024-11-27 20:29:53,093 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:29:53,094 INFO L435 NwaCegarLoop]: 4167 mSDtfsCounter, 4243 mSDsluCounter, 12462 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 16629 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:53,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 16629 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:29:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2024-11-27 20:29:53,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 4011. [2024-11-27 20:29:53,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4011 states, 3665 states have (on average 1.6916780354706684) internal successors, (6200), 3733 states have internal predecessors, (6200), 176 states have call successors, (176), 102 states have call predecessors, (176), 168 states have return successors, (432), 191 states have call predecessors, (432), 176 states have call successors, (432) [2024-11-27 20:29:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4011 states to 4011 states and 6808 transitions. [2024-11-27 20:29:53,515 INFO L78 Accepts]: Start accepts. Automaton has 4011 states and 6808 transitions. Word has length 66 [2024-11-27 20:29:53,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:53,517 INFO L471 AbstractCegarLoop]: Abstraction has 4011 states and 6808 transitions. [2024-11-27 20:29:53,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:53,517 INFO L276 IsEmpty]: Start isEmpty. Operand 4011 states and 6808 transitions. [2024-11-27 20:29:53,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-27 20:29:53,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:53,524 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] [2024-11-27 20:29:53,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:29:53,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:53,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:53,525 INFO L85 PathProgramCache]: Analyzing trace with hash 121338018, now seen corresponding path program 1 times [2024-11-27 20:29:53,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:53,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787032427] [2024-11-27 20:29:53,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:53,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:53,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:29:53,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:53,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787032427] [2024-11-27 20:29:53,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787032427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:53,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:53,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:29:53,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581098363] [2024-11-27 20:29:53,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:53,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:29:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:53,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:29:53,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:29:53,615 INFO L87 Difference]: Start difference. First operand 4011 states and 6808 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:54,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:54,053 INFO L93 Difference]: Finished difference Result 6910 states and 11255 transitions. [2024-11-27 20:29:54,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:29:54,054 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2024-11-27 20:29:54,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:54,087 INFO L225 Difference]: With dead ends: 6910 [2024-11-27 20:29:54,088 INFO L226 Difference]: Without dead ends: 5031 [2024-11-27 20:29:54,097 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 [2024-11-27 20:29:54,099 INFO L435 NwaCegarLoop]: 4287 mSDtfsCounter, 4261 mSDsluCounter, 4228 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4261 SdHoareTripleChecker+Valid, 8515 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:54,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4261 Valid, 8515 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:29:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5031 states. [2024-11-27 20:29:54,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5031 to 4950. [2024-11-27 20:29:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4950 states, 4434 states have (on average 1.6380243572395128) internal successors, (7263), 4531 states have internal predecessors, (7263), 272 states have call successors, (272), 156 states have call predecessors, (272), 242 states have return successors, (585), 278 states have call predecessors, (585), 272 states have call successors, (585) [2024-11-27 20:29:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4950 states to 4950 states and 8120 transitions. [2024-11-27 20:29:54,568 INFO L78 Accepts]: Start accepts. Automaton has 4950 states and 8120 transitions. Word has length 66 [2024-11-27 20:29:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:54,569 INFO L471 AbstractCegarLoop]: Abstraction has 4950 states and 8120 transitions. [2024-11-27 20:29:54,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 20:29:54,571 INFO L276 IsEmpty]: Start isEmpty. Operand 4950 states and 8120 transitions. [2024-11-27 20:29:54,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 20:29:54,588 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:54,591 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:54,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:29:54,591 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:54,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:54,592 INFO L85 PathProgramCache]: Analyzing trace with hash 2089622937, now seen corresponding path program 1 times [2024-11-27 20:29:54,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:54,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361419863] [2024-11-27 20:29:54,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:54,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:54,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:29:54,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361419863] [2024-11-27 20:29:54,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361419863] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:54,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684474855] [2024-11-27 20:29:54,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:54,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:54,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:54,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:54,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:29:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:54,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:29:54,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 20:29:55,026 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:29:55,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684474855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:55,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:29:55,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-27 20:29:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291038613] [2024-11-27 20:29:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:55,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:29:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:55,028 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:29:55,028 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:55,028 INFO L87 Difference]: Start difference. First operand 4950 states and 8120 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:29:55,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:55,481 INFO L93 Difference]: Finished difference Result 10443 states and 16282 transitions. [2024-11-27 20:29:55,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:29:55,482 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2024-11-27 20:29:55,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:55,556 INFO L225 Difference]: With dead ends: 10443 [2024-11-27 20:29:55,558 INFO L226 Difference]: Without dead ends: 7625 [2024-11-27 20:29:55,570 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:55,571 INFO L435 NwaCegarLoop]: 4136 mSDtfsCounter, 4095 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 4292 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 [2024-11-27 20:29:55,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4095 Valid, 4292 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:29:55,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7625 states. [2024-11-27 20:29:56,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7625 to 7597. [2024-11-27 20:29:56,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7597 states, 6605 states have (on average 1.5660862982588948) internal successors, (10344), 6797 states have internal predecessors, (10344), 510 states have call successors, (510), 308 states have call predecessors, (510), 480 states have return successors, (1121), 507 states have call predecessors, (1121), 510 states have call successors, (1121) [2024-11-27 20:29:56,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7597 states to 7597 states and 11975 transitions. [2024-11-27 20:29:56,146 INFO L78 Accepts]: Start accepts. Automaton has 7597 states and 11975 transitions. Word has length 107 [2024-11-27 20:29:56,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:56,146 INFO L471 AbstractCegarLoop]: Abstraction has 7597 states and 11975 transitions. [2024-11-27 20:29:56,147 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 20:29:56,147 INFO L276 IsEmpty]: Start isEmpty. Operand 7597 states and 11975 transitions. [2024-11-27 20:29:56,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-27 20:29:56,165 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:56,166 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:56,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:29:56,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:56,367 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:56,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:56,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1295768407, now seen corresponding path program 1 times [2024-11-27 20:29:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874776046] [2024-11-27 20:29:56,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:56,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:56,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:56,502 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 20:29:56,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:56,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874776046] [2024-11-27 20:29:56,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874776046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:56,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790257605] [2024-11-27 20:29:56,503 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:56,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:56,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:56,505 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:56,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:29:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:56,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:29:56,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:29:56,687 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:29:56,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790257605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:56,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:29:56,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:29:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710027739] [2024-11-27 20:29:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:56,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:29:56,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:56,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:29:56,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:56,690 INFO L87 Difference]: Start difference. First operand 7597 states and 11975 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:29:57,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:57,797 INFO L93 Difference]: Finished difference Result 18239 states and 27877 transitions. [2024-11-27 20:29:57,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:29:57,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 107 [2024-11-27 20:29:57,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:57,898 INFO L225 Difference]: With dead ends: 18239 [2024-11-27 20:29:57,898 INFO L226 Difference]: Without dead ends: 12775 [2024-11-27 20:29:57,927 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:57,934 INFO L435 NwaCegarLoop]: 4294 mSDtfsCounter, 153 mSDsluCounter, 4134 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 8428 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:57,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 8428 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:29:57,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12775 states. [2024-11-27 20:29:59,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12775 to 12775. [2024-11-27 20:29:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12775 states, 10846 states have (on average 1.5038723953531257) internal successors, (16311), 11211 states have internal predecessors, (16311), 975 states have call successors, (975), 608 states have call predecessors, (975), 952 states have return successors, (2348), 987 states have call predecessors, (2348), 975 states have call successors, (2348) [2024-11-27 20:29:59,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12775 states to 12775 states and 19634 transitions. [2024-11-27 20:29:59,168 INFO L78 Accepts]: Start accepts. Automaton has 12775 states and 19634 transitions. Word has length 107 [2024-11-27 20:29:59,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:59,170 INFO L471 AbstractCegarLoop]: Abstraction has 12775 states and 19634 transitions. [2024-11-27 20:29:59,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 20:29:59,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12775 states and 19634 transitions. [2024-11-27 20:29:59,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2024-11-27 20:29:59,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:59,213 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:59,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:29:59,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:59,414 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:59,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:59,415 INFO L85 PathProgramCache]: Analyzing trace with hash 228565588, now seen corresponding path program 1 times [2024-11-27 20:29:59,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:59,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71960895] [2024-11-27 20:29:59,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:59,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2024-11-27 20:29:59,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:59,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71960895] [2024-11-27 20:29:59,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71960895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:29:59,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883643061] [2024-11-27 20:29:59,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:59,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:29:59,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:29:59,577 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:29:59,581 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:29:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:59,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:29:59,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:29:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:29:59,975 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:29:59,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883643061] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:59,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:29:59,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-27 20:29:59,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70105820] [2024-11-27 20:29:59,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:59,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:29:59,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:59,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:29:59,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:29:59,977 INFO L87 Difference]: Start difference. First operand 12775 states and 19634 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 20:30:01,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:01,235 INFO L93 Difference]: Finished difference Result 33619 states and 50647 transitions. [2024-11-27 20:30:01,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:01,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 139 [2024-11-27 20:30:01,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:01,381 INFO L225 Difference]: With dead ends: 33619 [2024-11-27 20:30:01,381 INFO L226 Difference]: Without dead ends: 22981 [2024-11-27 20:30:01,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:01,432 INFO L435 NwaCegarLoop]: 4144 mSDtfsCounter, 4055 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 4300 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 [2024-11-27 20:30:01,433 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4055 Valid, 4300 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:01,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22981 states. [2024-11-27 20:30:03,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22981 to 22875. [2024-11-27 20:30:03,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22875 states, 19118 states have (on average 1.4589915263102835) internal successors, (27893), 19845 states have internal predecessors, (27893), 1869 states have call successors, (1869), 1198 states have call predecessors, (1869), 1886 states have return successors, (4542), 1863 states have call predecessors, (4542), 1869 states have call successors, (4542) [2024-11-27 20:30:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22875 states to 22875 states and 34304 transitions. [2024-11-27 20:30:03,297 INFO L78 Accepts]: Start accepts. Automaton has 22875 states and 34304 transitions. Word has length 139 [2024-11-27 20:30:03,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:03,299 INFO L471 AbstractCegarLoop]: Abstraction has 22875 states and 34304 transitions. [2024-11-27 20:30:03,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-27 20:30:03,299 INFO L276 IsEmpty]: Start isEmpty. Operand 22875 states and 34304 transitions. [2024-11-27 20:30:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:30:03,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:03,390 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:03,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:30:03,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:03,591 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:03,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:03,592 INFO L85 PathProgramCache]: Analyzing trace with hash 608782009, now seen corresponding path program 1 times [2024-11-27 20:30:03,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:03,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439044175] [2024-11-27 20:30:03,592 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:03,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:03,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 20:30:03,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439044175] [2024-11-27 20:30:03,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439044175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:03,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796190104] [2024-11-27 20:30:03,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:03,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:03,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:03,755 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:03,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:30:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:03,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:30:03,929 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-27 20:30:04,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:04,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796190104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:04,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:04,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:04,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290202632] [2024-11-27 20:30:04,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:04,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:04,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:04,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:04,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:04,092 INFO L87 Difference]: Start difference. First operand 22875 states and 34304 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 20:30:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:05,399 INFO L93 Difference]: Finished difference Result 46049 states and 70708 transitions. [2024-11-27 20:30:05,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:05,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2024-11-27 20:30:05,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:05,545 INFO L225 Difference]: With dead ends: 46049 [2024-11-27 20:30:05,545 INFO L226 Difference]: Without dead ends: 25309 [2024-11-27 20:30:05,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:05,611 INFO L435 NwaCegarLoop]: 4133 mSDtfsCounter, 4074 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4074 SdHoareTripleChecker+Valid, 4167 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:05,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4074 Valid, 4167 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:05,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25309 states. [2024-11-27 20:30:07,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25309 to 25309. [2024-11-27 20:30:07,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25309 states, 21340 states have (on average 1.405763823805061) internal successors, (29999), 22067 states have internal predecessors, (29999), 1923 states have call successors, (1923), 1356 states have call predecessors, (1923), 2044 states have return successors, (4610), 1917 states have call predecessors, (4610), 1923 states have call successors, (4610) [2024-11-27 20:30:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25309 states to 25309 states and 36532 transitions. [2024-11-27 20:30:07,613 INFO L78 Accepts]: Start accepts. Automaton has 25309 states and 36532 transitions. Word has length 155 [2024-11-27 20:30:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:07,613 INFO L471 AbstractCegarLoop]: Abstraction has 25309 states and 36532 transitions. [2024-11-27 20:30:07,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 20:30:07,614 INFO L276 IsEmpty]: Start isEmpty. Operand 25309 states and 36532 transitions. [2024-11-27 20:30:07,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:30:07,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:07,676 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:07,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:07,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 20:30:07,877 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:07,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:07,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1760520292, now seen corresponding path program 1 times [2024-11-27 20:30:07,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:07,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738917124] [2024-11-27 20:30:07,878 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:07,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 20:30:08,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738917124] [2024-11-27 20:30:08,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738917124] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:08,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162001579] [2024-11-27 20:30:08,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:08,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:08,024 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:08,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:30:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:08,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:30:08,196 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:08,299 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-27 20:30:08,299 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162001579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:08,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:08,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387834386] [2024-11-27 20:30:08,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:08,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:08,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:08,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:08,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:08,301 INFO L87 Difference]: Start difference. First operand 25309 states and 36532 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 20:30:09,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:09,335 INFO L93 Difference]: Finished difference Result 40779 states and 58823 transitions. [2024-11-27 20:30:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:09,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 155 [2024-11-27 20:30:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:09,599 INFO L225 Difference]: With dead ends: 40779 [2024-11-27 20:30:09,599 INFO L226 Difference]: Without dead ends: 21961 [2024-11-27 20:30:09,649 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:09,650 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 4089 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4089 SdHoareTripleChecker+Valid, 4165 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:09,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4089 Valid, 4165 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:09,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21961 states. [2024-11-27 20:30:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21961 to 16593. [2024-11-27 20:30:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16593 states, 14324 states have (on average 1.3917201898910918) internal successors, (19935), 14557 states have internal predecessors, (19935), 1183 states have call successors, (1183), 876 states have call predecessors, (1183), 1084 states have return successors, (1942), 1175 states have call predecessors, (1942), 1183 states have call successors, (1942) [2024-11-27 20:30:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16593 states to 16593 states and 23060 transitions. [2024-11-27 20:30:11,256 INFO L78 Accepts]: Start accepts. Automaton has 16593 states and 23060 transitions. Word has length 155 [2024-11-27 20:30:11,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:11,256 INFO L471 AbstractCegarLoop]: Abstraction has 16593 states and 23060 transitions. [2024-11-27 20:30:11,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-27 20:30:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 16593 states and 23060 transitions. [2024-11-27 20:30:11,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 20:30:11,282 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:11,282 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:11,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:30:11,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:30:11,487 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:11,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:11,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1108551998, now seen corresponding path program 1 times [2024-11-27 20:30:11,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:11,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317990359] [2024-11-27 20:30:11,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:11,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:11,647 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 20:30:11,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317990359] [2024-11-27 20:30:11,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317990359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:11,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469327559] [2024-11-27 20:30:11,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:11,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:11,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:11,655 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:11,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:30:11,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:11,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:11,805 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:11,885 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 20:30:11,885 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:11,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469327559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:11,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:11,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:11,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852615931] [2024-11-27 20:30:11,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:11,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:11,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:11,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:11,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:11,887 INFO L87 Difference]: Start difference. First operand 16593 states and 23060 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:30:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:13,164 INFO L93 Difference]: Finished difference Result 27553 states and 37425 transitions. [2024-11-27 20:30:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:13,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 155 [2024-11-27 20:30:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:13,269 INFO L225 Difference]: With dead ends: 27553 [2024-11-27 20:30:13,269 INFO L226 Difference]: Without dead ends: 17527 [2024-11-27 20:30:13,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:13,302 INFO L435 NwaCegarLoop]: 4166 mSDtfsCounter, 4083 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4326 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:13,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4083 Valid, 4326 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:13,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17527 states. [2024-11-27 20:30:14,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17527 to 17417. [2024-11-27 20:30:14,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17417 states, 15104 states have (on average 1.3684454449152543) internal successors, (20669), 15337 states have internal predecessors, (20669), 1183 states have call successors, (1183), 920 states have call predecessors, (1183), 1128 states have return successors, (1986), 1175 states have call predecessors, (1986), 1183 states have call successors, (1986) [2024-11-27 20:30:14,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17417 states to 17417 states and 23838 transitions. [2024-11-27 20:30:14,868 INFO L78 Accepts]: Start accepts. Automaton has 17417 states and 23838 transitions. Word has length 155 [2024-11-27 20:30:14,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:14,869 INFO L471 AbstractCegarLoop]: Abstraction has 17417 states and 23838 transitions. [2024-11-27 20:30:14,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:30:14,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17417 states and 23838 transitions. [2024-11-27 20:30:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 20:30:14,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:14,895 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:14,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:15,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-27 20:30:15,096 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:15,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:15,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1806969144, now seen corresponding path program 1 times [2024-11-27 20:30:15,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:15,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532402839] [2024-11-27 20:30:15,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:15,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-27 20:30:15,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532402839] [2024-11-27 20:30:15,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532402839] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12995714] [2024-11-27 20:30:15,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:15,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:15,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:15,260 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:15,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:30:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:15,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:30:15,418 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-27 20:30:15,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:15,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12995714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:15,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:15,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:15,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448755711] [2024-11-27 20:30:15,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:15,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:15,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:15,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:15,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:15,461 INFO L87 Difference]: Start difference. First operand 17417 states and 23838 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:30:16,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:16,923 INFO L93 Difference]: Finished difference Result 45771 states and 61336 transitions. [2024-11-27 20:30:16,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:16,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 156 [2024-11-27 20:30:16,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:17,077 INFO L225 Difference]: With dead ends: 45771 [2024-11-27 20:30:17,077 INFO L226 Difference]: Without dead ends: 30493 [2024-11-27 20:30:17,118 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:17,119 INFO L435 NwaCegarLoop]: 4283 mSDtfsCounter, 136 mSDsluCounter, 4128 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:17,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 8411 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30493 states. [2024-11-27 20:30:19,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30493 to 30491. [2024-11-27 20:30:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30491 states, 26108 states have (on average 1.3251493795005362) internal successors, (34597), 26573 states have internal predecessors, (34597), 2245 states have call successors, (2245), 1720 states have call predecessors, (2245), 2136 states have return successors, (4298), 2229 states have call predecessors, (4298), 2245 states have call successors, (4298) [2024-11-27 20:30:19,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 41140 transitions. [2024-11-27 20:30:19,282 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 41140 transitions. Word has length 156 [2024-11-27 20:30:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:19,283 INFO L471 AbstractCegarLoop]: Abstraction has 30491 states and 41140 transitions. [2024-11-27 20:30:19,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:30:19,283 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 41140 transitions. [2024-11-27 20:30:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:30:19,331 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:19,332 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:19,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:30:19,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-27 20:30:19,536 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:19,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -55413007, now seen corresponding path program 1 times [2024-11-27 20:30:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:19,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445936324] [2024-11-27 20:30:19,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:19,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:19,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-27 20:30:19,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445936324] [2024-11-27 20:30:19,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445936324] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:19,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545793588] [2024-11-27 20:30:19,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:19,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:19,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:19,664 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:19,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:30:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:19,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 20:30:19,818 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 20:30:19,853 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:19,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545793588] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:19,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:19,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606731170] [2024-11-27 20:30:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:19,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:19,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:19,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:19,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:19,858 INFO L87 Difference]: Start difference. First operand 30491 states and 41140 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:30:22,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:22,519 INFO L93 Difference]: Finished difference Result 83037 states and 111284 transitions. [2024-11-27 20:30:22,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:22,519 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 157 [2024-11-27 20:30:22,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:22,759 INFO L225 Difference]: With dead ends: 83037 [2024-11-27 20:30:22,759 INFO L226 Difference]: Without dead ends: 54693 [2024-11-27 20:30:22,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:22,821 INFO L435 NwaCegarLoop]: 4284 mSDtfsCounter, 145 mSDsluCounter, 4127 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 8411 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:22,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 8411 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54693 states. [2024-11-27 20:30:26,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54693 to 54691. [2024-11-27 20:30:26,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54691 states, 46376 states have (on average 1.2917241676729343) internal successors, (59905), 47305 states have internal predecessors, (59905), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2024-11-27 20:30:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54691 states to 54691 states and 73458 transitions. [2024-11-27 20:30:26,756 INFO L78 Accepts]: Start accepts. Automaton has 54691 states and 73458 transitions. Word has length 157 [2024-11-27 20:30:26,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:26,757 INFO L471 AbstractCegarLoop]: Abstraction has 54691 states and 73458 transitions. [2024-11-27 20:30:26,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2024-11-27 20:30:26,757 INFO L276 IsEmpty]: Start isEmpty. Operand 54691 states and 73458 transitions. [2024-11-27 20:30:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:30:26,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:26,873 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:26,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:30:27,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-27 20:30:27,073 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:27,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:27,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1056963791, now seen corresponding path program 1 times [2024-11-27 20:30:27,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:27,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454579668] [2024-11-27 20:30:27,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:27,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-27 20:30:27,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454579668] [2024-11-27 20:30:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454579668] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:27,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996260253] [2024-11-27 20:30:27,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:27,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:27,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:27,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:30:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:27,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:27,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-27 20:30:27,894 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:27,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996260253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:27,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:27,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:27,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073105730] [2024-11-27 20:30:27,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:27,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:27,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:27,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:27,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:27,897 INFO L87 Difference]: Start difference. First operand 54691 states and 73458 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:30:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:31,458 INFO L93 Difference]: Finished difference Result 95807 states and 128124 transitions. [2024-11-27 20:30:31,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:31,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 157 [2024-11-27 20:30:31,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:31,737 INFO L225 Difference]: With dead ends: 95807 [2024-11-27 20:30:31,737 INFO L226 Difference]: Without dead ends: 55973 [2024-11-27 20:30:31,820 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:31,821 INFO L435 NwaCegarLoop]: 4154 mSDtfsCounter, 4092 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4092 SdHoareTripleChecker+Valid, 4312 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:31,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4092 Valid, 4312 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55973 states. [2024-11-27 20:30:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55973 to 54571. [2024-11-27 20:30:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54571 states, 46256 states have (on average 1.283401072293324) internal successors, (59365), 47185 states have internal predecessors, (59365), 4265 states have call successors, (4265), 3216 states have call predecessors, (4265), 4048 states have return successors, (9288), 4233 states have call predecessors, (9288), 4265 states have call successors, (9288) [2024-11-27 20:30:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54571 states to 54571 states and 72918 transitions. [2024-11-27 20:30:35,772 INFO L78 Accepts]: Start accepts. Automaton has 54571 states and 72918 transitions. Word has length 157 [2024-11-27 20:30:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:35,772 INFO L471 AbstractCegarLoop]: Abstraction has 54571 states and 72918 transitions. [2024-11-27 20:30:35,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:30:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 54571 states and 72918 transitions. [2024-11-27 20:30:35,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 20:30:35,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:35,854 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:35,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-27 20:30:36,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:36,058 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:36,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:36,059 INFO L85 PathProgramCache]: Analyzing trace with hash 304698859, now seen corresponding path program 1 times [2024-11-27 20:30:36,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:36,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172094911] [2024-11-27 20:30:36,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:36,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:36,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:36,149 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-27 20:30:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172094911] [2024-11-27 20:30:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172094911] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:36,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:30:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630614864] [2024-11-27 20:30:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:36,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:36,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:36,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:36,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:36,153 INFO L87 Difference]: Start difference. First operand 54571 states and 72918 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:30:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:38,485 INFO L93 Difference]: Finished difference Result 94289 states and 124995 transitions. [2024-11-27 20:30:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:38,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 157 [2024-11-27 20:30:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:38,857 INFO L225 Difference]: With dead ends: 94289 [2024-11-27 20:30:38,857 INFO L226 Difference]: Without dead ends: 41861 [2024-11-27 20:30:38,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:30:38,980 INFO L435 NwaCegarLoop]: 4132 mSDtfsCounter, 169 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 8090 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:38,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 8090 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:39,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41861 states. [2024-11-27 20:30:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41861 to 41861. [2024-11-27 20:30:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41861 states, 35638 states have (on average 1.2980245805039565) internal successors, (46259), 36331 states have internal predecessors, (46259), 3181 states have call successors, (3181), 2416 states have call predecessors, (3181), 3040 states have return successors, (6634), 3145 states have call predecessors, (6634), 3181 states have call successors, (6634) [2024-11-27 20:30:41,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41861 states to 41861 states and 56074 transitions. [2024-11-27 20:30:42,025 INFO L78 Accepts]: Start accepts. Automaton has 41861 states and 56074 transitions. Word has length 157 [2024-11-27 20:30:42,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:42,025 INFO L471 AbstractCegarLoop]: Abstraction has 41861 states and 56074 transitions. [2024-11-27 20:30:42,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 20:30:42,025 INFO L276 IsEmpty]: Start isEmpty. Operand 41861 states and 56074 transitions. [2024-11-27 20:30:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-27 20:30:42,225 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:42,226 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:30:42,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:30:42,226 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:42,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:42,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1878296194, now seen corresponding path program 1 times [2024-11-27 20:30:42,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:42,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845271780] [2024-11-27 20:30:42,227 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:42,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:42,341 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-27 20:30:42,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845271780] [2024-11-27 20:30:42,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845271780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:30:42,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790714258] [2024-11-27 20:30:42,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:42,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:30:42,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:30:42,345 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:30:42,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73a0eccc-3ff6-43e1-a0ce-6ba92b112451/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:30:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:42,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 20:30:42,508 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 20:30:42,573 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:42,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790714258] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:42,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:42,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 20:30:42,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20906730] [2024-11-27 20:30:42,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:42,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:30:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:42,574 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:30:42,575 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:42,575 INFO L87 Difference]: Start difference. First operand 41861 states and 56074 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:30:44,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:44,972 INFO L93 Difference]: Finished difference Result 73109 states and 97034 transitions. [2024-11-27 20:30:44,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:30:44,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 158 [2024-11-27 20:30:44,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:45,145 INFO L225 Difference]: With dead ends: 73109 [2024-11-27 20:30:45,145 INFO L226 Difference]: Without dead ends: 42391 [2024-11-27 20:30:45,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:30:45,219 INFO L435 NwaCegarLoop]: 4147 mSDtfsCounter, 4090 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4090 SdHoareTripleChecker+Valid, 4303 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:45,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4090 Valid, 4303 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:30:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42391 states.