./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i --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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/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 dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:02:58,465 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:02:58,564 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:02:58,573 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:02:58,574 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:02:58,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:02:58,605 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:02:58,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:02:58,606 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:02:58,606 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:02:58,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:02:58,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:02:58,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:02:58,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:02:58,607 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:02:58,607 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:02:58,607 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:02:58,608 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:02:58,609 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:02:58,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:02:58,610 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:02:58,610 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:02:58,610 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:02:58,610 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:58,610 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:58,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:02:58,611 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:02:58,611 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:02:58,612 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:02:58,612 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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/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 -> dbea62dc4a872959247118f049e63d406eb1e848bb1ed8397f1082fdec77074c [2024-11-28 03:02:58,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:02:58,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:02:58,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:02:58,937 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:02:58,938 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:02:58,939 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2024-11-28 03:03:02,218 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/data/21aadf1d1/b4c0952f1dbc4e21accba77585e65ffd/FLAG5f66aaa17 [2024-11-28 03:03:02,778 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:03:02,779 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i [2024-11-28 03:03:02,795 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/data/21aadf1d1/b4c0952f1dbc4e21accba77585e65ffd/FLAG5f66aaa17 [2024-11-28 03:03:02,812 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/data/21aadf1d1/b4c0952f1dbc4e21accba77585e65ffd [2024-11-28 03:03:02,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:03:02,817 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:03:02,819 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:02,819 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:03:02,825 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:03:02,825 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:02" (1/1) ... [2024-11-28 03:03:02,827 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c779f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:02, skipping insertion in model container [2024-11-28 03:03:02,827 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:02" (1/1) ... [2024-11-28 03:03:02,903 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:03:03,442 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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2024-11-28 03:03:03,599 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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2024-11-28 03:03:03,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:03,632 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:03:03,697 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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[37019,37032] [2024-11-28 03:03:03,789 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_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-1.i[47352,47365] [2024-11-28 03:03:03,792 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:03:03,853 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:03:03,854 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03 WrapperNode [2024-11-28 03:03:03,855 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:03:03,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:03,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:03:03,860 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:03:03,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:03,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:03,976 INFO L138 Inliner]: procedures = 208, calls = 227, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1272 [2024-11-28 03:03:03,976 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:03:03,977 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:03:03,977 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:03:03,977 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:03:03,988 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:03,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,098 INFO L175 MemorySlicer]: Split 208 memory accesses to 3 slices as follows [172, 2, 34]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2, 0]. The 46 writes are split as follows [42, 0, 4]. [2024-11-28 03:03:04,098 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,165 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,172 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,222 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,233 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,264 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:03:04,268 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:03:04,268 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:03:04,270 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:03:04,271 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (1/1) ... [2024-11-28 03:03:04,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:03:04,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:04,311 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:03:04,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:03:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:04,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 03:03:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:03:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:03:04,353 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 03:03:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:03:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:03:04,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:03:04,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:03:04,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:03:04,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:03:04,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:03:04,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:03:04,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:03:04,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:03:04,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:03:04,659 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:03:04,661 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:03:07,839 INFO L? ?]: Removed 302 outVars from TransFormulas that were not future-live. [2024-11-28 03:03:07,839 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:03:07,872 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:03:07,873 INFO L312 CfgBuilder]: Removed 31 assume(true) statements. [2024-11-28 03:03:07,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:07 BoogieIcfgContainer [2024-11-28 03:03:07,873 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:03:07,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:03:07,879 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:03:07,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:03:07,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:02" (1/3) ... [2024-11-28 03:03:07,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b44bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:07, skipping insertion in model container [2024-11-28 03:03:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:03" (2/3) ... [2024-11-28 03:03:07,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b44bc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:07, skipping insertion in model container [2024-11-28 03:03:07,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:07" (3/3) ... [2024-11-28 03:03:07,890 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-1.i [2024-11-28 03:03:07,911 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:03:07,914 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test2-1.i that has 5 procedures, 395 locations, 1 initial locations, 33 loop locations, and 2 error locations. [2024-11-28 03:03:08,020 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:03:08,042 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;@502b14fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:03:08,042 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 03:03:08,053 INFO L276 IsEmpty]: Start isEmpty. Operand has 387 states, 374 states have (on average 1.6122994652406417) internal successors, (603), 381 states have internal predecessors, (603), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:03:08,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:03:08,060 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:08,061 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:03:08,062 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:08,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:08,068 INFO L85 PathProgramCache]: Analyzing trace with hash 450700766, now seen corresponding path program 1 times [2024-11-28 03:03:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:08,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375697018] [2024-11-28 03:03:08,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:08,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:08,294 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 03:03:08,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:08,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375697018] [2024-11-28 03:03:08,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375697018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:08,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:08,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:03:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191860995] [2024-11-28 03:03:08,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:08,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:03:08,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:08,331 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:03:08,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:03:08,335 INFO L87 Difference]: Start difference. First operand has 387 states, 374 states have (on average 1.6122994652406417) internal successors, (603), 381 states have internal predecessors, (603), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:08,454 INFO L93 Difference]: Finished difference Result 772 states and 1241 transitions. [2024-11-28 03:03:08,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:03:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 03:03:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:08,478 INFO L225 Difference]: With dead ends: 772 [2024-11-28 03:03:08,478 INFO L226 Difference]: Without dead ends: 383 [2024-11-28 03:03:08,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:03:08,489 INFO L435 NwaCegarLoop]: 559 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:08,490 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:03:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-28 03:03:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-28 03:03:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 371 states have (on average 1.4528301886792452) internal successors, (539), 377 states have internal predecessors, (539), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:03:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 555 transitions. [2024-11-28 03:03:08,598 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 555 transitions. Word has length 9 [2024-11-28 03:03:08,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:08,598 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 555 transitions. [2024-11-28 03:03:08,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 555 transitions. [2024-11-28 03:03:08,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:03:08,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:08,608 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] [2024-11-28 03:03:08,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:03:08,608 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:08,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:08,609 INFO L85 PathProgramCache]: Analyzing trace with hash -325315539, now seen corresponding path program 1 times [2024-11-28 03:03:08,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:08,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573200891] [2024-11-28 03:03:08,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:08,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:09,404 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 03:03:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:09,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573200891] [2024-11-28 03:03:09,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573200891] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:09,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:09,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:03:09,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680829049] [2024-11-28 03:03:09,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:09,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:09,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:09,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:09,408 INFO L87 Difference]: Start difference. First operand 383 states and 555 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:09,678 INFO L93 Difference]: Finished difference Result 931 states and 1360 transitions. [2024-11-28 03:03:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:03:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 03:03:09,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:09,685 INFO L225 Difference]: With dead ends: 931 [2024-11-28 03:03:09,685 INFO L226 Difference]: Without dead ends: 753 [2024-11-28 03:03:09,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:09,688 INFO L435 NwaCegarLoop]: 583 mSDtfsCounter, 524 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1691 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:09,688 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1691 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:03:09,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-28 03:03:09,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 385. [2024-11-28 03:03:09,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 373 states have (on average 1.450402144772118) internal successors, (541), 379 states have internal predecessors, (541), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:03:09,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 557 transitions. [2024-11-28 03:03:09,746 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 557 transitions. Word has length 64 [2024-11-28 03:03:09,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:09,747 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 557 transitions. [2024-11-28 03:03:09,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:09,747 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 557 transitions. [2024-11-28 03:03:09,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:03:09,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:09,753 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:09,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:03:09,753 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:09,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 678969108, now seen corresponding path program 1 times [2024-11-28 03:03:09,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:09,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329262539] [2024-11-28 03:03:09,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:09,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:10,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:10,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:10,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329262539] [2024-11-28 03:03:10,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329262539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:10,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:10,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:03:10,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718283000] [2024-11-28 03:03:10,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:10,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:10,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:10,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:10,515 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:10,516 INFO L87 Difference]: Start difference. First operand 385 states and 557 transitions. Second operand has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:10,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:10,676 INFO L93 Difference]: Finished difference Result 723 states and 1043 transitions. [2024-11-28 03:03:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:10,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-11-28 03:03:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:10,679 INFO L225 Difference]: With dead ends: 723 [2024-11-28 03:03:10,683 INFO L226 Difference]: Without dead ends: 342 [2024-11-28 03:03:10,684 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:10,685 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 30 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:10,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1337 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:10,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-28 03:03:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-28 03:03:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 330 states have (on average 1.403030303030303) internal successors, (463), 336 states have internal predecessors, (463), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:03:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 479 transitions. [2024-11-28 03:03:10,717 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 479 transitions. Word has length 141 [2024-11-28 03:03:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:10,720 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 479 transitions. [2024-11-28 03:03:10,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.25) internal successors, (141), 4 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 479 transitions. [2024-11-28 03:03:10,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:03:10,731 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:10,731 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:10,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:03:10,732 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:10,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:10,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1664993568, now seen corresponding path program 1 times [2024-11-28 03:03:10,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:10,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73393899] [2024-11-28 03:03:10,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:10,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:03:11,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73393899] [2024-11-28 03:03:11,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73393899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:11,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:11,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:11,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566407024] [2024-11-28 03:03:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:11,033 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:11,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:11,034 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:11,034 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,037 INFO L87 Difference]: Start difference. First operand 342 states and 479 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:11,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:11,137 INFO L93 Difference]: Finished difference Result 917 states and 1300 transitions. [2024-11-28 03:03:11,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:11,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2024-11-28 03:03:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:11,141 INFO L225 Difference]: With dead ends: 917 [2024-11-28 03:03:11,141 INFO L226 Difference]: Without dead ends: 579 [2024-11-28 03:03:11,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,143 INFO L435 NwaCegarLoop]: 668 mSDtfsCounter, 272 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:11,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1125 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:11,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-28 03:03:11,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-11-28 03:03:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 560 states have (on average 1.4214285714285715) internal successors, (796), 571 states have internal predecessors, (796), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:03:11,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 822 transitions. [2024-11-28 03:03:11,170 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 822 transitions. Word has length 141 [2024-11-28 03:03:11,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:11,171 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 822 transitions. [2024-11-28 03:03:11,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:03:11,171 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 822 transitions. [2024-11-28 03:03:11,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:03:11,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:11,176 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:11,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:03:11,177 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:11,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:11,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1886593403, now seen corresponding path program 1 times [2024-11-28 03:03:11,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:11,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318597124] [2024-11-28 03:03:11,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:11,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:11,661 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:11,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:11,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318597124] [2024-11-28 03:03:11,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318597124] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:11,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:11,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:03:11,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997888809] [2024-11-28 03:03:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:11,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:03:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:11,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:03:11,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,667 INFO L87 Difference]: Start difference. First operand 577 states and 822 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:11,781 INFO L93 Difference]: Finished difference Result 1119 states and 1605 transitions. [2024-11-28 03:03:11,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:03:11,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 03:03:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:11,786 INFO L225 Difference]: With dead ends: 1119 [2024-11-28 03:03:11,787 INFO L226 Difference]: Without dead ends: 577 [2024-11-28 03:03:11,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:03:11,789 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 0 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 908 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:11,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 908 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-28 03:03:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-28 03:03:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 560 states have (on average 1.4107142857142858) internal successors, (790), 571 states have internal predecessors, (790), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:03:11,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 816 transitions. [2024-11-28 03:03:11,823 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 816 transitions. Word has length 156 [2024-11-28 03:03:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:11,824 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 816 transitions. [2024-11-28 03:03:11,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:11,824 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 816 transitions. [2024-11-28 03:03:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:03:11,827 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:11,827 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:11,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:03:11,827 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:11,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:11,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1461336007, now seen corresponding path program 1 times [2024-11-28 03:03:11,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:11,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216321263] [2024-11-28 03:03:11,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:11,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:03:12,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:12,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216321263] [2024-11-28 03:03:12,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216321263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:12,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:12,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:03:12,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982163167] [2024-11-28 03:03:12,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:12,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:12,349 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:12,349 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:12,349 INFO L87 Difference]: Start difference. First operand 577 states and 816 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:12,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:12,502 INFO L93 Difference]: Finished difference Result 815 states and 1167 transitions. [2024-11-28 03:03:12,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:12,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 03:03:12,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:12,512 INFO L225 Difference]: With dead ends: 815 [2024-11-28 03:03:12,512 INFO L226 Difference]: Without dead ends: 491 [2024-11-28 03:03:12,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:12,518 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 36 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:12,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1081 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-28 03:03:12,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2024-11-28 03:03:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 474 states have (on average 1.3375527426160339) internal successors, (634), 485 states have internal predecessors, (634), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:03:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 660 transitions. [2024-11-28 03:03:12,561 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 660 transitions. Word has length 156 [2024-11-28 03:03:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:12,563 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 660 transitions. [2024-11-28 03:03:12,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:12,563 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 660 transitions. [2024-11-28 03:03:12,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:03:12,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:12,568 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:12,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:03:12,569 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:12,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:12,570 INFO L85 PathProgramCache]: Analyzing trace with hash 849391411, now seen corresponding path program 1 times [2024-11-28 03:03:12,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:12,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471472681] [2024-11-28 03:03:12,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:12,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:12,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:03:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:12,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471472681] [2024-11-28 03:03:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471472681] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:03:12,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605173078] [2024-11-28 03:03:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:12,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:03:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:12,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:03:12,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:03:12,942 INFO L87 Difference]: Start difference. First operand 491 states and 660 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:13,042 INFO L93 Difference]: Finished difference Result 717 states and 977 transitions. [2024-11-28 03:03:13,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:13,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 03:03:13,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:13,046 INFO L225 Difference]: With dead ends: 717 [2024-11-28 03:03:13,048 INFO L226 Difference]: Without dead ends: 479 [2024-11-28 03:03:13,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:13,050 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 9 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:13,051 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1082 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:03:13,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-28 03:03:13,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-28 03:03:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 462 states have (on average 1.329004329004329) internal successors, (614), 473 states have internal predecessors, (614), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:03:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 640 transitions. [2024-11-28 03:03:13,072 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 640 transitions. Word has length 156 [2024-11-28 03:03:13,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:13,073 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 640 transitions. [2024-11-28 03:03:13,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,074 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 640 transitions. [2024-11-28 03:03:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:03:13,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:13,078 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:13,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:03:13,079 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:13,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:13,079 INFO L85 PathProgramCache]: Analyzing trace with hash -52626117, now seen corresponding path program 1 times [2024-11-28 03:03:13,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:13,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288814189] [2024-11-28 03:03:13,080 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:13,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288814189] [2024-11-28 03:03:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288814189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:13,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:13,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:03:13,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016359615] [2024-11-28 03:03:13,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:13,452 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:03:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:13,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:03:13,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:03:13,453 INFO L87 Difference]: Start difference. First operand 479 states and 640 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:13,883 INFO L93 Difference]: Finished difference Result 949 states and 1270 transitions. [2024-11-28 03:03:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:03:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 03:03:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:13,887 INFO L225 Difference]: With dead ends: 949 [2024-11-28 03:03:13,888 INFO L226 Difference]: Without dead ends: 562 [2024-11-28 03:03:13,888 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:13,889 INFO L435 NwaCegarLoop]: 457 mSDtfsCounter, 1182 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 924 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:13,889 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 924 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:03:13,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-28 03:03:13,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 381. [2024-11-28 03:03:13,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 369 states have (on average 1.3170731707317074) internal successors, (486), 375 states have internal predecessors, (486), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 03:03:13,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 502 transitions. [2024-11-28 03:03:13,913 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 502 transitions. Word has length 156 [2024-11-28 03:03:13,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:13,913 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 502 transitions. [2024-11-28 03:03:13,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:13,913 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 502 transitions. [2024-11-28 03:03:13,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:03:13,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:13,920 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:13,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:03:13,920 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:13,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:13,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1356681261, now seen corresponding path program 1 times [2024-11-28 03:03:13,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:13,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302182518] [2024-11-28 03:03:13,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:13,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:15,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:15,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302182518] [2024-11-28 03:03:15,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302182518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:15,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614380978] [2024-11-28 03:03:15,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:15,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:15,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:15,060 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:15,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:03:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:15,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:03:15,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:15,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:03:15,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:03:15,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:03:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:15,998 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:16,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614380978] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:16,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:16,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-28 03:03:16,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4388762] [2024-11-28 03:03:16,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:16,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:03:16,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:16,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:03:16,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:03:16,315 INFO L87 Difference]: Start difference. First operand 381 states and 502 transitions. Second operand has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:03:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:16,780 INFO L93 Difference]: Finished difference Result 1260 states and 1673 transitions. [2024-11-28 03:03:16,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:03:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 166 [2024-11-28 03:03:16,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:16,786 INFO L225 Difference]: With dead ends: 1260 [2024-11-28 03:03:16,787 INFO L226 Difference]: Without dead ends: 1131 [2024-11-28 03:03:16,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:03:16,790 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 997 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1013 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:16,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1013 Valid, 2688 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:03:16,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2024-11-28 03:03:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 736. [2024-11-28 03:03:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 720 states have (on average 1.3125) internal successors, (945), 726 states have internal predecessors, (945), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 03:03:16,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 967 transitions. [2024-11-28 03:03:16,840 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 967 transitions. Word has length 166 [2024-11-28 03:03:16,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:16,841 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 967 transitions. [2024-11-28 03:03:16,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:03:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 967 transitions. [2024-11-28 03:03:16,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 03:03:16,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:16,848 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:16,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:03:17,049 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:17,050 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:17,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:17,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1384995696, now seen corresponding path program 1 times [2024-11-28 03:03:17,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:17,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510435388] [2024-11-28 03:03:17,051 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:17,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:21,551 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:21,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510435388] [2024-11-28 03:03:21,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510435388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:03:21,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682386590] [2024-11-28 03:03:21,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:21,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:03:21,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:03:21,554 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:03:21,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:03:22,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:03:22,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:03:22,495 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:03:22,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:03:22,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:03:23,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:03:23,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:03:23,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 03:03:23,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 03:03:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:23,518 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:03:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:03:24,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682386590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:03:24,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:03:24,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 19 [2024-11-28 03:03:24,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301413808] [2024-11-28 03:03:24,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:03:24,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:03:24,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:24,480 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:03:24,480 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:03:24,481 INFO L87 Difference]: Start difference. First operand 736 states and 967 transitions. Second operand has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:03:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:25,327 INFO L93 Difference]: Finished difference Result 2508 states and 3335 transitions. [2024-11-28 03:03:25,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:03:25,328 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 397 [2024-11-28 03:03:25,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:25,339 INFO L225 Difference]: With dead ends: 2508 [2024-11-28 03:03:25,339 INFO L226 Difference]: Without dead ends: 2379 [2024-11-28 03:03:25,341 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 786 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:03:25,342 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 5255 mSDsluCounter, 4071 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5292 SdHoareTripleChecker+Valid, 4479 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:25,342 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5292 Valid, 4479 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:03:25,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-11-28 03:03:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1618. [2024-11-28 03:03:25,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1596 states have (on average 1.3101503759398496) internal successors, (2091), 1602 states have internal predecessors, (2091), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 03:03:25,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2125 transitions. [2024-11-28 03:03:25,425 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2125 transitions. Word has length 397 [2024-11-28 03:03:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:25,426 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2125 transitions. [2024-11-28 03:03:25,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:03:25,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2125 transitions. [2024-11-28 03:03:25,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-28 03:03:25,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:25,455 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:25,468 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:03:25,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:03:25,659 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:25,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:25,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1704197648, now seen corresponding path program 2 times [2024-11-28 03:03:25,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:25,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453692129] [2024-11-28 03:03:25,661 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:03:25,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:03:26,101 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:03:26,102 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:03:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3471 trivial. 0 not checked. [2024-11-28 03:03:26,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:03:26,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453692129] [2024-11-28 03:03:26,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453692129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:03:26,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:03:26,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:03:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928942360] [2024-11-28 03:03:26,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:03:26,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:03:26,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:03:26,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:03:26,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:03:26,387 INFO L87 Difference]: Start difference. First operand 1618 states and 2125 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:03:26,902 INFO L93 Difference]: Finished difference Result 1751 states and 2305 transitions. [2024-11-28 03:03:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:03:26,904 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 859 [2024-11-28 03:03:26,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:03:26,913 INFO L225 Difference]: With dead ends: 1751 [2024-11-28 03:03:26,913 INFO L226 Difference]: Without dead ends: 1623 [2024-11-28 03:03:26,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:03:26,915 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 10 mSDsluCounter, 1175 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:03:26,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1542 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:03:26,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2024-11-28 03:03:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1620. [2024-11-28 03:03:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1620 states, 1598 states have (on average 1.309762202753442) internal successors, (2093), 1604 states have internal predecessors, (2093), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 03:03:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2127 transitions. [2024-11-28 03:03:26,989 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2127 transitions. Word has length 859 [2024-11-28 03:03:26,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:03:26,991 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2127 transitions. [2024-11-28 03:03:26,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:03:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2127 transitions. [2024-11-28 03:03:27,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-28 03:03:27,047 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:03:27,047 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:27,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:03:27,048 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:03:27,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:03:27,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1331013739, now seen corresponding path program 1 times [2024-11-28 03:03:27,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:03:27,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042990043] [2024-11-28 03:03:27,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:03:27,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:09,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 515 proven. 3 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-28 03:07:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042990043] [2024-11-28 03:07:09,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042990043] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:09,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605037758] [2024-11-28 03:07:09,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:09,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:07:09,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:07:09,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:07:09,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:07:40,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:40,924 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 03:07:40,947 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:07:40,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:07:41,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 03:07:41,274 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-28 03:07:42,098 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:07:42,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 43 [2024-11-28 03:07:42,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 917 proven. 34 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-28 03:07:42,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:07:44,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2024-11-28 03:07:46,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605037758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:07:46,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:07:46,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 15 [2024-11-28 03:07:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018805477] [2024-11-28 03:07:46,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:07:46,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:07:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:46,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:07:46,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:07:46,336 INFO L87 Difference]: Start difference. First operand 1620 states and 2127 transitions. Second operand has 15 states, 15 states have (on average 22.733333333333334) internal successors, (341), 15 states have internal predecessors, (341), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:07:48,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 03:07:51,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:51,881 INFO L93 Difference]: Finished difference Result 3287 states and 4331 transitions. [2024-11-28 03:07:51,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:07:51,884 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 22.733333333333334) internal successors, (341), 15 states have internal predecessors, (341), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 860 [2024-11-28 03:07:51,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:51,895 INFO L225 Difference]: With dead ends: 3287 [2024-11-28 03:07:51,895 INFO L226 Difference]: Without dead ends: 1762 [2024-11-28 03:07:51,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1664 GetRequests, 1628 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=207, Invalid=983, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:07:51,899 INFO L435 NwaCegarLoop]: 534 mSDtfsCounter, 869 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:51,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 4707 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1655 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 03:07:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2024-11-28 03:07:51,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1626. [2024-11-28 03:07:51,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1603 states have (on average 1.3094198378041173) internal successors, (2099), 1610 states have internal predecessors, (2099), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:07:51,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 2134 transitions. [2024-11-28 03:07:51,973 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 2134 transitions. Word has length 860 [2024-11-28 03:07:51,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:51,973 INFO L471 AbstractCegarLoop]: Abstraction has 1626 states and 2134 transitions. [2024-11-28 03:07:51,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 22.733333333333334) internal successors, (341), 15 states have internal predecessors, (341), 3 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:07:51,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 2134 transitions. [2024-11-28 03:07:52,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-11-28 03:07:52,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:52,004 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:52,104 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:07:52,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:07:52,205 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:52,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:52,206 INFO L85 PathProgramCache]: Analyzing trace with hash -208586491, now seen corresponding path program 1 times [2024-11-28 03:07:52,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:52,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554472090] [2024-11-28 03:07:52,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:52,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:52,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 2605 trivial. 0 not checked. [2024-11-28 03:07:53,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:53,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554472090] [2024-11-28 03:07:53,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554472090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:53,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:07:53,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:07:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764766150] [2024-11-28 03:07:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:53,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:07:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:53,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:07:53,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:07:53,580 INFO L87 Difference]: Start difference. First operand 1626 states and 2134 transitions. Second operand has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:07:53,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:53,681 INFO L93 Difference]: Finished difference Result 3156 states and 4170 transitions. [2024-11-28 03:07:53,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:07:53,682 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 862 [2024-11-28 03:07:53,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:53,690 INFO L225 Difference]: With dead ends: 3156 [2024-11-28 03:07:53,690 INFO L226 Difference]: Without dead ends: 1563 [2024-11-28 03:07:53,693 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:07:53,693 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 9 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:53,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1067 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:07:53,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-28 03:07:53,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2024-11-28 03:07:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1540 states have (on average 1.3149350649350648) internal successors, (2025), 1547 states have internal predecessors, (2025), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:07:53,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2060 transitions. [2024-11-28 03:07:53,760 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2060 transitions. Word has length 862 [2024-11-28 03:07:53,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:53,761 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2060 transitions. [2024-11-28 03:07:53,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.5) internal successors, (258), 4 states have internal predecessors, (258), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:07:53,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2060 transitions. [2024-11-28 03:07:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-11-28 03:07:53,770 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:53,771 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:53,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 03:07:53,771 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:53,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash -239783633, now seen corresponding path program 1 times [2024-11-28 03:07:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061628799] [2024-11-28 03:07:53,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:53,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 580 proven. 6 refuted. 0 times theorem prover too weak. 2890 trivial. 0 not checked. [2024-11-28 03:11:08,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:08,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061628799] [2024-11-28 03:11:08,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061628799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:11:08,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177854737] [2024-11-28 03:11:08,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:08,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:11:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:11:08,403 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:11:08,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:11:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:26,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 4192 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 03:11:26,019 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:11:26,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:11:26,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2024-11-28 03:11:27,325 INFO L134 CoverageAnalysis]: Checked inductivity of 3476 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 3168 trivial. 0 not checked. [2024-11-28 03:11:27,326 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:11:27,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177854737] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:27,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:11:27,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 26 [2024-11-28 03:11:27,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360011113] [2024-11-28 03:11:27,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:27,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:11:27,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:27,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:11:27,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:11:27,328 INFO L87 Difference]: Start difference. First operand 1563 states and 2060 transitions. Second operand has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:29,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:29,128 INFO L93 Difference]: Finished difference Result 3211 states and 4247 transitions. [2024-11-28 03:11:29,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:11:29,128 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 863 [2024-11-28 03:11:29,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:29,135 INFO L225 Difference]: With dead ends: 3211 [2024-11-28 03:11:29,135 INFO L226 Difference]: Without dead ends: 1687 [2024-11-28 03:11:29,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 864 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=136, Invalid=986, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:11:29,138 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 444 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:29,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 2335 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:11:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-11-28 03:11:29,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1563. [2024-11-28 03:11:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1540 states have (on average 1.3142857142857143) internal successors, (2024), 1547 states have internal predecessors, (2024), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:11:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2059 transitions. [2024-11-28 03:11:29,203 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2059 transitions. Word has length 863 [2024-11-28 03:11:29,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:29,204 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2059 transitions. [2024-11-28 03:11:29,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 18.09090909090909) internal successors, (199), 11 states have internal predecessors, (199), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:29,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2059 transitions. [2024-11-28 03:11:29,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-28 03:11:29,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:29,213 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:29,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:11:29,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61d4b05b-60b0-4d1f-9185-3cd5cf79e442/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:11:29,414 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:29,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:29,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2058344149, now seen corresponding path program 2 times [2024-11-28 03:11:29,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:29,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329751054] [2024-11-28 03:11:29,415 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:11:29,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:29,712 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:11:29,712 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:11:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2024-11-28 03:11:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329751054] [2024-11-28 03:11:29,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329751054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:29,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:11:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166441331] [2024-11-28 03:11:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:29,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:11:29,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:29,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:11:29,865 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:11:29,866 INFO L87 Difference]: Start difference. First operand 1563 states and 2059 transitions. Second operand has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:30,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:30,072 INFO L93 Difference]: Finished difference Result 1693 states and 2233 transitions. [2024-11-28 03:11:30,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:11:30,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 864 [2024-11-28 03:11:30,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:30,082 INFO L225 Difference]: With dead ends: 1693 [2024-11-28 03:11:30,082 INFO L226 Difference]: Without dead ends: 1563 [2024-11-28 03:11:30,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 03:11:30,084 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 13 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 979 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:30,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 979 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1563 states. [2024-11-28 03:11:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1563 to 1563. [2024-11-28 03:11:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1540 states have (on average 1.3136363636363637) internal successors, (2023), 1547 states have internal predecessors, (2023), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:11:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2058 transitions. [2024-11-28 03:11:30,143 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2058 transitions. Word has length 864 [2024-11-28 03:11:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:30,146 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2058 transitions. [2024-11-28 03:11:30,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.25) internal successors, (165), 4 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2058 transitions. [2024-11-28 03:11:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-28 03:11:30,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:30,154 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:30,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:11:30,155 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:30,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash -278802879, now seen corresponding path program 1 times [2024-11-28 03:11:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:30,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397692537] [2024-11-28 03:11:30,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:30,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:32,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2024-11-28 03:11:32,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:32,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397692537] [2024-11-28 03:11:32,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397692537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:32,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:32,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:11:32,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838438847] [2024-11-28 03:11:32,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:32,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:11:32,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:32,269 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:11:32,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:32,270 INFO L87 Difference]: Start difference. First operand 1563 states and 2058 transitions. Second operand has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:32,643 INFO L93 Difference]: Finished difference Result 1698 states and 2239 transitions. [2024-11-28 03:11:32,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:11:32,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 864 [2024-11-28 03:11:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:32,649 INFO L225 Difference]: With dead ends: 1698 [2024-11-28 03:11:32,650 INFO L226 Difference]: Without dead ends: 1568 [2024-11-28 03:11:32,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:11:32,651 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 10 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1826 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:32,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1826 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:11:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-28 03:11:32,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1567. [2024-11-28 03:11:32,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1544 states have (on average 1.3134715025906736) internal successors, (2028), 1551 states have internal predecessors, (2028), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:11:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2063 transitions. [2024-11-28 03:11:32,708 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2063 transitions. Word has length 864 [2024-11-28 03:11:32,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:32,710 INFO L471 AbstractCegarLoop]: Abstraction has 1567 states and 2063 transitions. [2024-11-28 03:11:32,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.571428571428573) internal successors, (165), 7 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:32,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2063 transitions. [2024-11-28 03:11:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2024-11-28 03:11:32,720 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:32,720 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:32,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:11:32,721 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:32,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:32,722 INFO L85 PathProgramCache]: Analyzing trace with hash -893797237, now seen corresponding path program 1 times [2024-11-28 03:11:32,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:32,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586684896] [2024-11-28 03:11:32,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:32,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2024-11-28 03:11:34,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:34,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586684896] [2024-11-28 03:11:34,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586684896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:34,577 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:34,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:11:34,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414235858] [2024-11-28 03:11:34,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:34,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:11:34,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:34,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:11:34,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:34,579 INFO L87 Difference]: Start difference. First operand 1567 states and 2063 transitions. Second operand has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:34,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:34,824 INFO L93 Difference]: Finished difference Result 1704 states and 2246 transitions. [2024-11-28 03:11:34,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:11:34,825 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 865 [2024-11-28 03:11:34,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:34,830 INFO L225 Difference]: With dead ends: 1704 [2024-11-28 03:11:34,830 INFO L226 Difference]: Without dead ends: 1570 [2024-11-28 03:11:34,831 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:11:34,832 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 4 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:34,832 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1269 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:11:34,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-28 03:11:34,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1570. [2024-11-28 03:11:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1570 states, 1547 states have (on average 1.312863606981254) internal successors, (2031), 1554 states have internal predecessors, (2031), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:11:34,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1570 states to 1570 states and 2066 transitions. [2024-11-28 03:11:34,887 INFO L78 Accepts]: Start accepts. Automaton has 1570 states and 2066 transitions. Word has length 865 [2024-11-28 03:11:34,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:34,888 INFO L471 AbstractCegarLoop]: Abstraction has 1570 states and 2066 transitions. [2024-11-28 03:11:34,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.666666666666668) internal successors, (166), 6 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1570 states and 2066 transitions. [2024-11-28 03:11:34,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2024-11-28 03:11:34,896 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:34,897 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:34,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:11:34,897 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:34,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1118521294, now seen corresponding path program 1 times [2024-11-28 03:11:34,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:34,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328305992] [2024-11-28 03:11:34,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:34,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:11:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:11:37,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3477 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3477 trivial. 0 not checked. [2024-11-28 03:11:37,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:11:37,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328305992] [2024-11-28 03:11:37,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328305992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:11:37,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:11:37,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:11:37,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397373342] [2024-11-28 03:11:37,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:11:37,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:11:37,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:11:37,150 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:11:37,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:11:37,151 INFO L87 Difference]: Start difference. First operand 1570 states and 2066 transitions. Second operand has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:37,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:11:37,784 INFO L93 Difference]: Finished difference Result 1720 states and 2268 transitions. [2024-11-28 03:11:37,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:11:37,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 865 [2024-11-28 03:11:37,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:11:37,788 INFO L225 Difference]: With dead ends: 1720 [2024-11-28 03:11:37,788 INFO L226 Difference]: Without dead ends: 1583 [2024-11-28 03:11:37,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:11:37,790 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 30 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:11:37,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2481 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:11:37,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2024-11-28 03:11:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1580. [2024-11-28 03:11:37,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1580 states, 1557 states have (on average 1.3134232498394347) internal successors, (2045), 1564 states have internal predecessors, (2045), 17 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (18), 13 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 03:11:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1580 states to 1580 states and 2080 transitions. [2024-11-28 03:11:37,849 INFO L78 Accepts]: Start accepts. Automaton has 1580 states and 2080 transitions. Word has length 865 [2024-11-28 03:11:37,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:11:37,850 INFO L471 AbstractCegarLoop]: Abstraction has 1580 states and 2080 transitions. [2024-11-28 03:11:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.444444444444443) internal successors, (166), 9 states have internal predecessors, (166), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:11:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1580 states and 2080 transitions. [2024-11-28 03:11:37,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2024-11-28 03:11:37,859 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:11:37,860 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:11:37,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:11:37,860 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:11:37,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:11:37,861 INFO L85 PathProgramCache]: Analyzing trace with hash -700778677, now seen corresponding path program 1 times [2024-11-28 03:11:37,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:11:37,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297742503] [2024-11-28 03:11:37,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:11:37,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms