./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI --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 c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:54:51,910 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:54:52,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-24 21:54:52,050 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:54:52,051 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:54:52,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:54:52,097 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:54:52,097 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:54:52,099 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:54:52,106 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:54:52,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:54:52,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:54:52,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:54:52,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:54:52,110 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:54:52,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:54:52,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:54:52,112 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:54:52,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:54:52,115 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:54:52,115 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:54:52,116 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:54:52,116 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:54:52,117 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:54:52,117 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:54:52,118 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:54:52,118 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:54:52,119 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:54:52,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:54:52,120 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:54:52,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:54:52,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:52,122 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:54:52,122 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:54:52,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 21:54:52,123 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:54:52,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:54:52,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:54:52,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:54:52,124 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 21:54:52,125 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:54:52,125 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:54:52,125 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c748b455b85e8e0d3f42bb7ec9994b8706853b8413212fc1d08f459460f9e58b [2023-11-24 21:54:52,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:54:52,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:54:52,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:54:52,548 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:54:52,549 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:54:52,550 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2023-11-24 21:54:55,745 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:54:56,548 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:54:56,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c [2023-11-24 21:54:56,613 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/data/1ee2299cd/60ef555891104a209f74796e4f496f9c/FLAGdc7edb505 [2023-11-24 21:54:56,633 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/data/1ee2299cd/60ef555891104a209f74796e4f496f9c [2023-11-24 21:54:56,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:54:56,638 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:54:56,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:56,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:54:56,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:54:56,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:56" (1/1) ... [2023-11-24 21:54:56,649 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71360fcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:56, skipping insertion in model container [2023-11-24 21:54:56,649 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:56" (1/1) ... [2023-11-24 21:54:56,959 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:59,334 WARN L240 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_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c[382357,382370] [2023-11-24 21:54:59,367 WARN L240 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_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c[383339,383352] [2023-11-24 21:54:59,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:59,775 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:55:01,062 WARN L240 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_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c[382357,382370] [2023-11-24 21:55:01,066 WARN L240 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_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/sv-benchmarks/c/combinations/Problem05_label46+token_ring.11.cil-2.c[383339,383352] [2023-11-24 21:55:01,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:55:01,177 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:55:01,177 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01 WrapperNode [2023-11-24 21:55:01,177 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:55:01,179 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:01,179 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:55:01,179 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:55:01,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:01,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:01,910 INFO L138 Inliner]: procedures = 66, calls = 74, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 13168 [2023-11-24 21:55:01,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:55:01,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:55:01,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:55:01,912 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:55:01,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:01,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,076 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,247 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]. [2023-11-24 21:55:02,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,248 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,495 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,555 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,726 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,751 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:55:02,869 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:55:02,869 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:55:02,870 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:55:02,870 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (1/1) ... [2023-11-24 21:55:02,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:55:02,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:55:02,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:55:02,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ca142ef-8407-4c3d-9d80-6dd404dedc5b/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:55:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:55:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2023-11-24 21:55:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2023-11-24 21:55:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-24 21:55:02,960 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-24 21:55:02,960 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2023-11-24 21:55:02,961 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2023-11-24 21:55:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2023-11-24 21:55:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2023-11-24 21:55:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2023-11-24 21:55:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2023-11-24 21:55:02,962 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2023-11-24 21:55:02,962 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2023-11-24 21:55:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:55:02,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:55:02,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:55:03,164 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:55:03,167 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:55:13,533 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:55:13,714 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:55:13,714 INFO L309 CfgBuilder]: Removed 15 assume(true) statements. [2023-11-24 21:55:13,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:13 BoogieIcfgContainer [2023-11-24 21:55:13,717 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:55:13,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:55:13,721 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:55:13,726 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:55:13,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:54:56" (1/3) ... [2023-11-24 21:55:13,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f262bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:13, skipping insertion in model container [2023-11-24 21:55:13,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:55:01" (2/3) ... [2023-11-24 21:55:13,728 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57f262bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:55:13, skipping insertion in model container [2023-11-24 21:55:13,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:55:13" (3/3) ... [2023-11-24 21:55:13,731 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.11.cil-2.c [2023-11-24 21:55:13,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:55:13,758 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:55:13,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:55:13,899 INFO L357 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, mHoare=true, 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;@55281e77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:55:13,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:55:13,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 21:55:13,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:55:13,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:55:13,959 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:13,960 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:55:13,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:13,965 INFO L85 PathProgramCache]: Analyzing trace with hash -259596153, now seen corresponding path program 1 times [2023-11-24 21:55:13,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:13,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694986122] [2023-11-24 21:55:13,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:13,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:55:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:55:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-24 21:55:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 21:55:14,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-24 21:55:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:14,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:14,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:14,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694986122] [2023-11-24 21:55:14,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694986122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:14,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:14,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 21:55:14,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287191955] [2023-11-24 21:55:14,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:14,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:55:14,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:14,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:55:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:55:14,936 INFO L87 Difference]: Start difference. First operand has 2448 states, 2414 states have (on average 1.876553438276719) internal successors, (4530), 2417 states have internal predecessors, (4530), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:17,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:55:17,875 INFO L93 Difference]: Finished difference Result 5006 states and 9354 transitions. [2023-11-24 21:55:17,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 21:55:17,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 151 [2023-11-24 21:55:17,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:55:17,916 INFO L225 Difference]: With dead ends: 5006 [2023-11-24 21:55:17,916 INFO L226 Difference]: Without dead ends: 2564 [2023-11-24 21:55:17,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-24 21:55:17,938 INFO L413 NwaCegarLoop]: 4238 mSDtfsCounter, 902 mSDsluCounter, 12182 mSDsCounter, 0 mSdLazyCounter, 992 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 925 SdHoareTripleChecker+Valid, 16420 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 992 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 21:55:17,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [925 Valid, 16420 Invalid, 1046 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [54 Valid, 992 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 21:55:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2023-11-24 21:55:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2444. [2023-11-24 21:55:18,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2444 states, 2411 states have (on average 1.838241393612609) internal successors, (4432), 2413 states have internal predecessors, (4432), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-24 21:55:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2444 states to 2444 states and 4482 transitions. [2023-11-24 21:55:18,169 INFO L78 Accepts]: Start accepts. Automaton has 2444 states and 4482 transitions. Word has length 151 [2023-11-24 21:55:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:55:18,170 INFO L495 AbstractCegarLoop]: Abstraction has 2444 states and 4482 transitions. [2023-11-24 21:55:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.2) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:18,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2444 states and 4482 transitions. [2023-11-24 21:55:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:55:18,178 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:55:18,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:18,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:55:18,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:55:18,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:18,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1876287049, now seen corresponding path program 1 times [2023-11-24 21:55:18,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:18,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407580363] [2023-11-24 21:55:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:18,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:55:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:55:18,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-24 21:55:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 21:55:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-24 21:55:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:18,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:18,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407580363] [2023-11-24 21:55:18,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407580363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:18,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:18,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-24 21:55:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878768026] [2023-11-24 21:55:18,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:18,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 21:55:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 21:55:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 21:55:18,771 INFO L87 Difference]: Start difference. First operand 2444 states and 4482 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:23,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:55:23,406 INFO L93 Difference]: Finished difference Result 3313 states and 5934 transitions. [2023-11-24 21:55:23,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:55:23,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 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 151 [2023-11-24 21:55:23,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:55:23,435 INFO L225 Difference]: With dead ends: 3313 [2023-11-24 21:55:23,436 INFO L226 Difference]: Without dead ends: 3007 [2023-11-24 21:55:23,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:55:23,444 INFO L413 NwaCegarLoop]: 4252 mSDtfsCounter, 5325 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5343 SdHoareTripleChecker+Valid, 16951 SdHoareTripleChecker+Invalid, 2279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-11-24 21:55:23,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5343 Valid, 16951 Invalid, 2279 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 2175 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-11-24 21:55:23,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3007 states. [2023-11-24 21:55:23,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3007 to 2768. [2023-11-24 21:55:23,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2768 states, 2708 states have (on average 1.8172082717872968) internal successors, (4921), 2711 states have internal predecessors, (4921), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2023-11-24 21:55:23,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2768 states to 2768 states and 5014 transitions. [2023-11-24 21:55:23,584 INFO L78 Accepts]: Start accepts. Automaton has 2768 states and 5014 transitions. Word has length 151 [2023-11-24 21:55:23,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:55:23,584 INFO L495 AbstractCegarLoop]: Abstraction has 2768 states and 5014 transitions. [2023-11-24 21:55:23,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 4 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:23,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2768 states and 5014 transitions. [2023-11-24 21:55:23,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:55:23,588 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:55:23,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:23,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:55:23,588 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:55:23,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:23,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1755061197, now seen corresponding path program 1 times [2023-11-24 21:55:23,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:23,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338460478] [2023-11-24 21:55:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:23,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:23,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:55:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:55:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-24 21:55:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:24,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 21:55:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-24 21:55:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:24,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:24,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:24,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338460478] [2023-11-24 21:55:24,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338460478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:24,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:24,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:55:24,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561987827] [2023-11-24 21:55:24,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:24,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:55:24,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:24,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:55:24,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:55:24,036 INFO L87 Difference]: Start difference. First operand 2768 states and 5014 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:29,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:55:29,951 INFO L93 Difference]: Finished difference Result 4098 states and 7236 transitions. [2023-11-24 21:55:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:55:29,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 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 151 [2023-11-24 21:55:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:55:29,977 INFO L225 Difference]: With dead ends: 4098 [2023-11-24 21:55:29,977 INFO L226 Difference]: Without dead ends: 3468 [2023-11-24 21:55:29,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:55:29,982 INFO L413 NwaCegarLoop]: 4390 mSDtfsCounter, 5356 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3461 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5374 SdHoareTripleChecker+Valid, 21646 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-11-24 21:55:29,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5374 Valid, 21646 Invalid, 3520 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3461 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-11-24 21:55:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3468 states. [2023-11-24 21:55:30,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3468 to 3067. [2023-11-24 21:55:30,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3067 states, 2980 states have (on average 1.7986577181208054) internal successors, (5360), 2984 states have internal predecessors, (5360), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2023-11-24 21:55:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3067 states to 3067 states and 5495 transitions. [2023-11-24 21:55:30,139 INFO L78 Accepts]: Start accepts. Automaton has 3067 states and 5495 transitions. Word has length 151 [2023-11-24 21:55:30,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:55:30,140 INFO L495 AbstractCegarLoop]: Abstraction has 3067 states and 5495 transitions. [2023-11-24 21:55:30,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:30,140 INFO L276 IsEmpty]: Start isEmpty. Operand 3067 states and 5495 transitions. [2023-11-24 21:55:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:55:30,143 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:55:30,143 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:55:30,144 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:55:30,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1864745973, now seen corresponding path program 1 times [2023-11-24 21:55:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:30,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071685466] [2023-11-24 21:55:30,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:30,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:55:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:55:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-24 21:55:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 21:55:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-24 21:55:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:30,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:30,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071685466] [2023-11-24 21:55:30,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071685466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:30,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:30,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:55:30,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804106777] [2023-11-24 21:55:30,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:30,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:55:30,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:30,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:55:30,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:55:30,679 INFO L87 Difference]: Start difference. First operand 3067 states and 5495 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:55:35,927 INFO L93 Difference]: Finished difference Result 5248 states and 9131 transitions. [2023-11-24 21:55:35,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-24 21:55:35,931 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 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 151 [2023-11-24 21:55:35,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:55:35,958 INFO L225 Difference]: With dead ends: 5248 [2023-11-24 21:55:35,959 INFO L226 Difference]: Without dead ends: 4319 [2023-11-24 21:55:35,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-11-24 21:55:35,964 INFO L413 NwaCegarLoop]: 4388 mSDtfsCounter, 5354 mSDsluCounter, 17256 mSDsCounter, 0 mSdLazyCounter, 3457 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5372 SdHoareTripleChecker+Valid, 21644 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-24 21:55:35,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5372 Valid, 21644 Invalid, 3518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 3457 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-24 21:55:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4319 states. [2023-11-24 21:55:36,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4319 to 3666. [2023-11-24 21:55:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3525 states have (on average 1.7699290780141843) internal successors, (6239), 3531 states have internal predecessors, (6239), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2023-11-24 21:55:36,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 6462 transitions. [2023-11-24 21:55:36,148 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 6462 transitions. Word has length 151 [2023-11-24 21:55:36,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:55:36,149 INFO L495 AbstractCegarLoop]: Abstraction has 3666 states and 6462 transitions. [2023-11-24 21:55:36,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-24 21:55:36,149 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 6462 transitions. [2023-11-24 21:55:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-24 21:55:36,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:55:36,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:36,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:55:36,153 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-24 21:55:36,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:36,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1482169357, now seen corresponding path program 1 times [2023-11-24 21:55:36,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:55:36,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331155664] [2023-11-24 21:55:36,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:36,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:55:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-24 21:55:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-24 21:55:36,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-24 21:55:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2023-11-24 21:55:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2023-11-24 21:55:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:36,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:36,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:55:36,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331155664] [2023-11-24 21:55:36,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331155664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:36,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:36,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 21:55:36,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056485029] [2023-11-24 21:55:36,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:36,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-24 21:55:36,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:55:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-24 21:55:36,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-24 21:55:36,540 INFO L87 Difference]: Start difference. First operand 3666 states and 6462 transitions. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 5 states have internal predecessors, (141), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)