./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.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_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/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_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/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_f29133d0-9386-4dbe-b40b-6f63577d06e7/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 198234a6cbed333832b896acc347872fc09d4c349ed801953a7aa6331aa2ab3f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:28:49,625 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:28:49,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:28:49,732 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:28:49,732 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:28:49,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:28:49,775 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:28:49,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:28:49,776 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:28:49,779 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:28:49,779 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:28:49,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:28:49,780 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:28:49,780 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:28:49,780 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:28:49,780 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:28:49,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:28:49,781 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:28:49,782 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:49,782 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:28:49,782 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:28:49,783 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:28:49,783 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:28:49,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:49,783 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:28:49,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:28:49,785 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:28:49,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:28:49,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:28:49,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:28:49,786 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:28:49,786 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:28:49,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:28:49,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:28:49,786 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_f29133d0-9386-4dbe-b40b-6f63577d06e7/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 -> 198234a6cbed333832b896acc347872fc09d4c349ed801953a7aa6331aa2ab3f [2024-11-28 03:28:50,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:28:50,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:28:50,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:28:50,143 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:28:50,143 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:28:50,144 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c [2024-11-28 03:28:53,127 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/data/ac73f4715/913e6bee93864a04bb28d5fd34071b0a/FLAGf69961a02 [2024-11-28 03:28:53,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:28:53,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c [2024-11-28 03:28:53,965 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/data/ac73f4715/913e6bee93864a04bb28d5fd34071b0a/FLAGf69961a02 [2024-11-28 03:28:53,983 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/data/ac73f4715/913e6bee93864a04bb28d5fd34071b0a [2024-11-28 03:28:53,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:28:53,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:28:53,989 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:53,989 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:28:53,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:28:53,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:53" (1/1) ... [2024-11-28 03:28:53,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c0127e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:53, skipping insertion in model container [2024-11-28 03:28:53,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:28:53" (1/1) ... [2024-11-28 03:28:54,216 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:28:56,186 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_f29133d0-9386-4dbe-b40b-6f63577d06e7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[380323,380336] [2024-11-28 03:28:56,229 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_f29133d0-9386-4dbe-b40b-6f63577d06e7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[383339,383352] [2024-11-28 03:28:56,528 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:56,540 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:28:57,650 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_f29133d0-9386-4dbe-b40b-6f63577d06e7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[380323,380336] [2024-11-28 03:28:57,711 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_f29133d0-9386-4dbe-b40b-6f63577d06e7/sv-benchmarks/c/combinations/Problem05_label45+token_ring.03.cil-2.c[383339,383352] [2024-11-28 03:28:57,733 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:28:57,800 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:28:57,802 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57 WrapperNode [2024-11-28 03:28:57,802 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:28:57,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:28:57,805 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:28:57,805 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:28:57,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:57,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,377 INFO L138 Inliner]: procedures = 50, calls = 50, calls flagged for inlining = 28, calls inlined = 28, statements flattened = 12686 [2024-11-28 03:28:58,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:28:58,378 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:28:58,378 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:28:58,378 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:28:58,388 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,491 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,605 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:28:58,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,606 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,775 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,827 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,850 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:28:58,927 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:28:58,927 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:28:58,927 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:28:58,929 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (1/1) ... [2024-11-28 03:28:58,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:28:58,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:28:59,015 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:28:59,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:28:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:28:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-28 03:28:59,048 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-28 03:28:59,048 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-28 03:28:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-28 03:28:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-28 03:28:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-28 03:28:59,049 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-28 03:28:59,049 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-28 03:28:59,050 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-28 03:28:59,050 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-28 03:28:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-28 03:28:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-28 03:28:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:28:59,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:28:59,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:28:59,194 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:28:59,197 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:29:10,928 INFO L? ?]: Removed 1701 outVars from TransFormulas that were not future-live. [2024-11-28 03:29:10,928 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:29:11,026 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:29:11,026 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-28 03:29:11,027 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:29:11 BoogieIcfgContainer [2024-11-28 03:29:11,027 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:29:11,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:29:11,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:29:11,038 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:29:11,039 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:28:53" (1/3) ... [2024-11-28 03:29:11,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484238e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:29:11, skipping insertion in model container [2024-11-28 03:29:11,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:28:57" (2/3) ... [2024-11-28 03:29:11,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484238e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:29:11, skipping insertion in model container [2024-11-28 03:29:11,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:29:11" (3/3) ... [2024-11-28 03:29:11,044 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label45+token_ring.03.cil-2.c [2024-11-28 03:29:11,064 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:29:11,068 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label45+token_ring.03.cil-2.c that has 7 procedures, 2338 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-28 03:29:11,205 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:29:11,223 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;@3816cc17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:29:11,224 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:29:11,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 2338 states, 2313 states have (on average 1.8555987894509296) internal successors, (4292), 2315 states have internal predecessors, (4292), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 03:29:11,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:11,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:11,248 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:11,249 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:11,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:11,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1233266917, now seen corresponding path program 1 times [2024-11-28 03:29:11,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:11,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157631670] [2024-11-28 03:29:11,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:11,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:11,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:11,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:11,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157631670] [2024-11-28 03:29:11,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157631670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:11,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:11,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:29:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350225878] [2024-11-28 03:29:11,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:11,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:29:11,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:11,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:29:11,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:29:11,945 INFO L87 Difference]: Start difference. First operand has 2338 states, 2313 states have (on average 1.8555987894509296) internal successors, (4292), 2315 states have internal predecessors, (4292), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:12,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:12,787 INFO L93 Difference]: Finished difference Result 4819 states and 8883 transitions. [2024-11-28 03:29:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:29:12,790 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:12,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:12,814 INFO L225 Difference]: With dead ends: 4819 [2024-11-28 03:29:12,815 INFO L226 Difference]: Without dead ends: 2422 [2024-11-28 03:29:12,823 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 [2024-11-28 03:29:12,826 INFO L435 NwaCegarLoop]: 4200 mSDtfsCounter, 4409 mSDsluCounter, 8479 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 12679 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:12,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4420 Valid, 12679 Invalid, 301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:29:12,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2024-11-28 03:29:13,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2411. [2024-11-28 03:29:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2411 states, 2367 states have (on average 1.830587241233629) internal successors, (4333), 2370 states have internal predecessors, (4333), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-28 03:29:13,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 4392 transitions. [2024-11-28 03:29:13,047 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 4392 transitions. Word has length 77 [2024-11-28 03:29:13,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:13,047 INFO L471 AbstractCegarLoop]: Abstraction has 2411 states and 4392 transitions. [2024-11-28 03:29:13,048 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:13,048 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 4392 transitions. [2024-11-28 03:29:13,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:13,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:13,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:13,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:29:13,055 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:13,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:13,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1510114913, now seen corresponding path program 1 times [2024-11-28 03:29:13,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:13,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981335087] [2024-11-28 03:29:13,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:13,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:13,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:13,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981335087] [2024-11-28 03:29:13,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981335087] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:13,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:13,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:13,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064917795] [2024-11-28 03:29:13,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:13,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:13,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:13,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:13,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:13,421 INFO L87 Difference]: Start difference. First operand 2411 states and 4392 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:14,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:14,177 INFO L93 Difference]: Finished difference Result 2864 states and 5079 transitions. [2024-11-28 03:29:14,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:14,178 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:14,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:14,192 INFO L225 Difference]: With dead ends: 2864 [2024-11-28 03:29:14,192 INFO L226 Difference]: Without dead ends: 2585 [2024-11-28 03:29:14,195 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:14,196 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4334 mSDsluCounter, 12687 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4345 SdHoareTripleChecker+Valid, 16925 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:14,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4345 Valid, 16925 Invalid, 511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:29:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2024-11-28 03:29:14,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2542. [2024-11-28 03:29:14,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2479 states have (on average 1.8152480839048004) internal successors, (4500), 2483 states have internal predecessors, (4500), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-28 03:29:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 4586 transitions. [2024-11-28 03:29:14,314 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 4586 transitions. Word has length 77 [2024-11-28 03:29:14,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:14,315 INFO L471 AbstractCegarLoop]: Abstraction has 2542 states and 4586 transitions. [2024-11-28 03:29:14,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:14,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 4586 transitions. [2024-11-28 03:29:14,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:14,320 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:14,320 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:14,321 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:29:14,321 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:14,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -830842659, now seen corresponding path program 1 times [2024-11-28 03:29:14,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:14,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347756386] [2024-11-28 03:29:14,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:14,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:14,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:14,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:14,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347756386] [2024-11-28 03:29:14,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347756386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:14,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:14,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:14,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915760027] [2024-11-28 03:29:14,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:14,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:14,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:14,591 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:14,591 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:14,591 INFO L87 Difference]: Start difference. First operand 2542 states and 4586 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:15,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:15,221 INFO L93 Difference]: Finished difference Result 3273 states and 5692 transitions. [2024-11-28 03:29:15,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:15,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:15,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:15,238 INFO L225 Difference]: With dead ends: 3273 [2024-11-28 03:29:15,238 INFO L226 Difference]: Without dead ends: 2863 [2024-11-28 03:29:15,241 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:15,242 INFO L435 NwaCegarLoop]: 4234 mSDtfsCounter, 4329 mSDsluCounter, 12675 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 16909 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:15,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4340 Valid, 16909 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:29:15,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2024-11-28 03:29:15,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2817. [2024-11-28 03:29:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 2714 states have (on average 1.7881355932203389) internal successors, (4853), 2722 states have internal predecessors, (4853), 65 states have call successors, (65), 30 states have call predecessors, (65), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-28 03:29:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 4999 transitions. [2024-11-28 03:29:15,363 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 4999 transitions. Word has length 77 [2024-11-28 03:29:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:15,365 INFO L471 AbstractCegarLoop]: Abstraction has 2817 states and 4999 transitions. [2024-11-28 03:29:15,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 4999 transitions. [2024-11-28 03:29:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:15,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:15,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:15,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:29:15,370 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:15,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:15,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1130731999, now seen corresponding path program 1 times [2024-11-28 03:29:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:15,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588043392] [2024-11-28 03:29:15,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:15,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588043392] [2024-11-28 03:29:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588043392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:15,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303575690] [2024-11-28 03:29:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:15,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:15,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:15,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:15,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:15,580 INFO L87 Difference]: Start difference. First operand 2817 states and 4999 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:16,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:16,226 INFO L93 Difference]: Finished difference Result 4138 states and 7015 transitions. [2024-11-28 03:29:16,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:16,227 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:16,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:16,246 INFO L225 Difference]: With dead ends: 4138 [2024-11-28 03:29:16,247 INFO L226 Difference]: Without dead ends: 3453 [2024-11-28 03:29:16,253 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:16,253 INFO L435 NwaCegarLoop]: 4231 mSDtfsCounter, 4324 mSDsluCounter, 12666 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 16897 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:16,255 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4335 Valid, 16897 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:29:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3453 states. [2024-11-28 03:29:16,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3453 to 3400. [2024-11-28 03:29:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 3211 states have (on average 1.7455621301775148) internal successors, (5605), 3233 states have internal predecessors, (5605), 113 states have call successors, (113), 54 states have call predecessors, (113), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-28 03:29:16,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5895 transitions. [2024-11-28 03:29:16,415 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5895 transitions. Word has length 77 [2024-11-28 03:29:16,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:16,415 INFO L471 AbstractCegarLoop]: Abstraction has 3400 states and 5895 transitions. [2024-11-28 03:29:16,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5895 transitions. [2024-11-28 03:29:16,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:16,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:16,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:16,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:29:16,419 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:16,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:16,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1332555933, now seen corresponding path program 1 times [2024-11-28 03:29:16,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:16,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72865005] [2024-11-28 03:29:16,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:16,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:16,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:16,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72865005] [2024-11-28 03:29:16,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72865005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:16,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:16,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:16,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675602655] [2024-11-28 03:29:16,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:16,599 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:16,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:16,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:16,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:16,599 INFO L87 Difference]: Start difference. First operand 3400 states and 5895 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:17,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:17,417 INFO L93 Difference]: Finished difference Result 6189 states and 10234 transitions. [2024-11-28 03:29:17,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:17,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:17,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:17,446 INFO L225 Difference]: With dead ends: 6189 [2024-11-28 03:29:17,446 INFO L226 Difference]: Without dead ends: 4921 [2024-11-28 03:29:17,452 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:17,452 INFO L435 NwaCegarLoop]: 4226 mSDtfsCounter, 4423 mSDsluCounter, 12646 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4438 SdHoareTripleChecker+Valid, 16872 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:17,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4438 Valid, 16872 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:29:17,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2024-11-28 03:29:17,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 4623. [2024-11-28 03:29:17,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4623 states, 4252 states have (on average 1.692615239887112) internal successors, (7197), 4320 states have internal predecessors, (7197), 201 states have call successors, (201), 102 states have call predecessors, (201), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-28 03:29:17,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4623 states to 4623 states and 7855 transitions. [2024-11-28 03:29:17,699 INFO L78 Accepts]: Start accepts. Automaton has 4623 states and 7855 transitions. Word has length 77 [2024-11-28 03:29:17,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:17,699 INFO L471 AbstractCegarLoop]: Abstraction has 4623 states and 7855 transitions. [2024-11-28 03:29:17,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:17,700 INFO L276 IsEmpty]: Start isEmpty. Operand 4623 states and 7855 transitions. [2024-11-28 03:29:17,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:17,707 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:17,707 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:17,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:29:17,708 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:17,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1893255711, now seen corresponding path program 1 times [2024-11-28 03:29:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088192550] [2024-11-28 03:29:17,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:17,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:17,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:17,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:17,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088192550] [2024-11-28 03:29:17,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088192550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:17,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:17,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:17,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462331517] [2024-11-28 03:29:17,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:17,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:17,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:17,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:17,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:17,855 INFO L87 Difference]: Start difference. First operand 4623 states and 7855 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:18,665 INFO L93 Difference]: Finished difference Result 10148 states and 16868 transitions. [2024-11-28 03:29:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:18,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:18,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:18,723 INFO L225 Difference]: With dead ends: 10148 [2024-11-28 03:29:18,723 INFO L226 Difference]: Without dead ends: 7657 [2024-11-28 03:29:18,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:18,734 INFO L435 NwaCegarLoop]: 4222 mSDtfsCounter, 4336 mSDsluCounter, 12634 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 16856 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:18,734 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 16856 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:29:18,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7657 states. [2024-11-28 03:29:19,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7657 to 7170. [2024-11-28 03:29:19,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7170 states, 6389 states have (on average 1.6373454374706526) internal successors, (10461), 6603 states have internal predecessors, (10461), 369 states have call successors, (369), 198 states have call predecessors, (369), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-28 03:29:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7170 states to 7170 states and 12223 transitions. [2024-11-28 03:29:19,191 INFO L78 Accepts]: Start accepts. Automaton has 7170 states and 12223 transitions. Word has length 77 [2024-11-28 03:29:19,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:19,192 INFO L471 AbstractCegarLoop]: Abstraction has 7170 states and 12223 transitions. [2024-11-28 03:29:19,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:19,193 INFO L276 IsEmpty]: Start isEmpty. Operand 7170 states and 12223 transitions. [2024-11-28 03:29:19,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:19,198 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:19,199 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:19,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:29:19,199 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:19,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:19,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1967982499, now seen corresponding path program 1 times [2024-11-28 03:29:19,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:19,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844850269] [2024-11-28 03:29:19,199 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:19,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:19,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:19,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:19,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844850269] [2024-11-28 03:29:19,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844850269] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:19,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:19,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:29:19,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87670103] [2024-11-28 03:29:19,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:19,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:29:19,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:19,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:29:19,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:19,429 INFO L87 Difference]: Start difference. First operand 7170 states and 12223 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:20,433 INFO L93 Difference]: Finished difference Result 17817 states and 31118 transitions. [2024-11-28 03:29:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:29:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:20,505 INFO L225 Difference]: With dead ends: 17817 [2024-11-28 03:29:20,505 INFO L226 Difference]: Without dead ends: 12779 [2024-11-28 03:29:20,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:29:20,528 INFO L435 NwaCegarLoop]: 4216 mSDtfsCounter, 4320 mSDsluCounter, 12618 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 16834 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:20,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4335 Valid, 16834 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:29:20,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12779 states. [2024-11-28 03:29:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12779 to 12442. [2024-11-28 03:29:21,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12442 states, 10695 states have (on average 1.5793361383824216) internal successors, (16891), 11363 states have internal predecessors, (16891), 689 states have call successors, (689), 390 states have call predecessors, (689), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-28 03:29:21,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12442 states to 12442 states and 22365 transitions. [2024-11-28 03:29:21,640 INFO L78 Accepts]: Start accepts. Automaton has 12442 states and 22365 transitions. Word has length 77 [2024-11-28 03:29:21,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:21,642 INFO L471 AbstractCegarLoop]: Abstraction has 12442 states and 22365 transitions. [2024-11-28 03:29:21,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:21,643 INFO L276 IsEmpty]: Start isEmpty. Operand 12442 states and 22365 transitions. [2024-11-28 03:29:21,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 03:29:21,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:21,656 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:21,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:29:21,656 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:21,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:21,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1927307749, now seen corresponding path program 1 times [2024-11-28 03:29:21,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:21,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112490825] [2024-11-28 03:29:21,657 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:21,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:29:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112490825] [2024-11-28 03:29:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112490825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:29:21,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:29:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055592664] [2024-11-28 03:29:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:21,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:29:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:21,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:29:21,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:29:21,745 INFO L87 Difference]: Start difference. First operand 12442 states and 22365 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:23,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:23,070 INFO L93 Difference]: Finished difference Result 28333 states and 50836 transitions. [2024-11-28 03:29:23,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:29:23,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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 77 [2024-11-28 03:29:23,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:23,177 INFO L225 Difference]: With dead ends: 28333 [2024-11-28 03:29:23,177 INFO L226 Difference]: Without dead ends: 18024 [2024-11-28 03:29:23,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:29:23,231 INFO L435 NwaCegarLoop]: 4367 mSDtfsCounter, 4334 mSDsluCounter, 4304 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4334 SdHoareTripleChecker+Valid, 8671 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:23,232 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4334 Valid, 8671 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:29:23,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18024 states. [2024-11-28 03:29:24,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18024 to 17181. [2024-11-28 03:29:24,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17181 states, 14659 states have (on average 1.5446483389044272) internal successors, (22643), 15572 states have internal predecessors, (22643), 1054 states have call successors, (1054), 588 states have call predecessors, (1054), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-28 03:29:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 29840 transitions. [2024-11-28 03:29:24,532 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 29840 transitions. Word has length 77 [2024-11-28 03:29:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:24,533 INFO L471 AbstractCegarLoop]: Abstraction has 17181 states and 29840 transitions. [2024-11-28 03:29:24,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (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) [2024-11-28 03:29:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 29840 transitions. [2024-11-28 03:29:24,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:29:24,591 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:24,591 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, 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] [2024-11-28 03:29:24,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:29:24,592 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:24,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:24,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1072793816, now seen corresponding path program 1 times [2024-11-28 03:29:24,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:24,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443752600] [2024-11-28 03:29:24,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:24,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:24,711 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:29:24,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443752600] [2024-11-28 03:29:24,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443752600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:24,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000530740] [2024-11-28 03:29:24,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:24,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:24,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:24,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:24,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:29:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:24,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:29:24,875 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 03:29:24,973 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:29:24,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000530740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:24,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:29:24,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 03:29:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238767399] [2024-11-28 03:29:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:24,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:29:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:24,977 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:29:24,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:24,977 INFO L87 Difference]: Start difference. First operand 17181 states and 29840 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (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) [2024-11-28 03:29:26,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:26,438 INFO L93 Difference]: Finished difference Result 46930 states and 81420 transitions. [2024-11-28 03:29:26,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:29:26,439 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (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 125 [2024-11-28 03:29:26,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:26,613 INFO L225 Difference]: With dead ends: 46930 [2024-11-28 03:29:26,613 INFO L226 Difference]: Without dead ends: 31882 [2024-11-28 03:29:26,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:26,668 INFO L435 NwaCegarLoop]: 4177 mSDtfsCounter, 4133 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4133 SdHoareTripleChecker+Valid, 4372 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:26,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4133 Valid, 4372 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:29:26,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31882 states. [2024-11-28 03:29:29,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31882 to 31782. [2024-11-28 03:29:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31782 states, 26794 states have (on average 1.5162349779801447) internal successors, (40626), 28618 states have internal predecessors, (40626), 2054 states have call successors, (2054), 1176 states have call predecessors, (2054), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-28 03:29:29,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31782 states to 31782 states and 54849 transitions. [2024-11-28 03:29:29,489 INFO L78 Accepts]: Start accepts. Automaton has 31782 states and 54849 transitions. Word has length 125 [2024-11-28 03:29:29,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:29,490 INFO L471 AbstractCegarLoop]: Abstraction has 31782 states and 54849 transitions. [2024-11-28 03:29:29,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (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) [2024-11-28 03:29:29,490 INFO L276 IsEmpty]: Start isEmpty. Operand 31782 states and 54849 transitions. [2024-11-28 03:29:29,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:29:29,593 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:29,593 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:29,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:29:29,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:29,794 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:29,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:29,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1506584918, now seen corresponding path program 1 times [2024-11-28 03:29:29,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:29,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834165473] [2024-11-28 03:29:29,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:29,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:29:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834165473] [2024-11-28 03:29:30,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834165473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:30,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337735424] [2024-11-28 03:29:30,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:30,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:30,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:30,184 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:30,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:29:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:30,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:29:30,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:29:30,426 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:29:30,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337735424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:30,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:29:30,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-28 03:29:30,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435980252] [2024-11-28 03:29:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:30,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:29:30,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:30,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:29:30,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:30,428 INFO L87 Difference]: Start difference. First operand 31782 states and 54849 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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) [2024-11-28 03:29:33,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:29:33,134 INFO L93 Difference]: Finished difference Result 90387 states and 156315 transitions. [2024-11-28 03:29:33,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:29:33,135 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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 125 [2024-11-28 03:29:33,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:29:33,560 INFO L225 Difference]: With dead ends: 90387 [2024-11-28 03:29:33,561 INFO L226 Difference]: Without dead ends: 60738 [2024-11-28 03:29:33,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:33,686 INFO L435 NwaCegarLoop]: 4177 mSDtfsCounter, 4127 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4127 SdHoareTripleChecker+Valid, 4372 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:29:33,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4127 Valid, 4372 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:29:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60738 states. [2024-11-28 03:29:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60738 to 60540. [2024-11-28 03:29:38,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60540 states, 50670 states have (on average 1.4980067100848629) internal successors, (75904), 54316 states have internal predecessors, (75904), 4004 states have call successors, (4004), 2352 states have call predecessors, (4004), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-28 03:29:39,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60540 states to 60540 states and 104079 transitions. [2024-11-28 03:29:39,416 INFO L78 Accepts]: Start accepts. Automaton has 60540 states and 104079 transitions. Word has length 125 [2024-11-28 03:29:39,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:29:39,417 INFO L471 AbstractCegarLoop]: Abstraction has 60540 states and 104079 transitions. [2024-11-28 03:29:39,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (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) [2024-11-28 03:29:39,417 INFO L276 IsEmpty]: Start isEmpty. Operand 60540 states and 104079 transitions. [2024-11-28 03:29:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:29:39,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:29:39,502 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:29:39,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:29:39,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:29:39,703 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:29:39,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:29:39,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1018265684, now seen corresponding path program 1 times [2024-11-28 03:29:39,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:29:39,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137118344] [2024-11-28 03:29:39,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:39,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:29:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 03:29:39,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:29:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137118344] [2024-11-28 03:29:39,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137118344] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:29:39,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606324987] [2024-11-28 03:29:39,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:29:39,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:29:39,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:29:39,828 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:29:39,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f29133d0-9386-4dbe-b40b-6f63577d06e7/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:29:39,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:29:39,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:29:39,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:29:40,038 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 03:29:40,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:29:40,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1606324987] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:29:40,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:29:40,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 03:29:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455013442] [2024-11-28 03:29:40,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:29:40,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:29:40,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:29:40,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:29:40,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:29:40,040 INFO L87 Difference]: Start difference. First operand 60540 states and 104079 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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)