./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.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_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/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_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/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_e5366110-7522-4dac-975a-99496f5ef11d/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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:15:04,198 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:15:04,289 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:15:04,294 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:15:04,295 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:15:04,322 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:15:04,323 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:15:04,323 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:15:04,324 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:15:04,324 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:15:04,324 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:15:04,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:15:04,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:15:04,325 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:15:04,325 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:15:04,325 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:15:04,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:15:04,325 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:15:04,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:15:04,326 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:15:04,327 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:15:04,327 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:15:04,327 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:15:04,327 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:15:04,327 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:04,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:04,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:04,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:04,328 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:15:04,328 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:15:04,328 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:04,329 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:15:04,329 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:15:04,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:15:04,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:15:04,330 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:15:04,330 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:15:04,330 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:15:04,330 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_e5366110-7522-4dac-975a-99496f5ef11d/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 -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2024-11-27 23:15:04,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:15:04,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:15:04,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:15:04,704 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:15:04,705 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:15:04,706 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2024-11-27 23:15:07,947 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/data/0164c9c60/80f019f70d764be59715ca5beb2bec76/FLAG17bd9f548 [2024-11-27 23:15:08,477 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:15:08,478 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2024-11-27 23:15:08,511 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/data/0164c9c60/80f019f70d764be59715ca5beb2bec76/FLAG17bd9f548 [2024-11-27 23:15:08,537 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/data/0164c9c60/80f019f70d764be59715ca5beb2bec76 [2024-11-27 23:15:08,540 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:15:08,544 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:15:08,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:15:08,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:15:08,555 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:15:08,556 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:08" (1/1) ... [2024-11-27 23:15:08,557 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69064c88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:08, skipping insertion in model container [2024-11-27 23:15:08,557 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:15:08" (1/1) ... [2024-11-27 23:15:08,629 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:15:09,196 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_e5366110-7522-4dac-975a-99496f5ef11d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2024-11-27 23:15:09,351 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_e5366110-7522-4dac-975a-99496f5ef11d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2024-11-27 23:15:09,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:15:09,381 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:15:09,449 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_e5366110-7522-4dac-975a-99496f5ef11d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2024-11-27 23:15:09,583 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_e5366110-7522-4dac-975a-99496f5ef11d/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2024-11-27 23:15:09,606 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:15:09,653 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:15:09,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09 WrapperNode [2024-11-27 23:15:09,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:15:09,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:15:09,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:15:09,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:15:09,663 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,771 INFO L138 Inliner]: procedures = 208, calls = 278, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1433 [2024-11-27 23:15:09,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:15:09,772 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:15:09,772 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:15:09,772 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:15:09,784 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,784 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,797 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,886 INFO L175 MemorySlicer]: Split 256 memory accesses to 3 slices as follows [2, 220, 34]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 50, 4]. [2024-11-27 23:15:09,886 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,931 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,951 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,957 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,962 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:15:09,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:15:09,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:15:09,974 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:15:09,975 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (1/1) ... [2024-11-27 23:15:09,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:15:09,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:15:10,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:15:10,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:15:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-27 23:15:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-27 23:15:10,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-27 23:15:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-27 23:15:10,059 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-27 23:15:10,060 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 23:15:10,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 23:15:10,062 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 23:15:10,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 23:15:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:15:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 23:15:10,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 23:15:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 23:15:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:15:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 23:15:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 23:15:10,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:15:10,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:15:10,423 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:15:10,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:15:12,647 INFO L? ?]: Removed 328 outVars from TransFormulas that were not future-live. [2024-11-27 23:15:12,647 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:15:12,676 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:15:12,676 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-27 23:15:12,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:15:12 BoogieIcfgContainer [2024-11-27 23:15:12,677 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:15:12,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:15:12,680 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:15:12,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:15:12,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:15:08" (1/3) ... [2024-11-27 23:15:12,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfa60c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:15:12, skipping insertion in model container [2024-11-27 23:15:12,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:15:09" (2/3) ... [2024-11-27 23:15:12,686 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfa60c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:15:12, skipping insertion in model container [2024-11-27 23:15:12,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:15:12" (3/3) ... [2024-11-27 23:15:12,687 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2024-11-27 23:15:12,745 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:15:12,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test2-2.i that has 5 procedures, 429 locations, 1 initial locations, 38 loop locations, and 2 error locations. [2024-11-27 23:15:12,811 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:15:12,822 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;@59d18e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:15:12,823 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:15:12,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 421 states, 408 states have (on average 1.6151960784313726) internal successors, (659), 415 states have internal predecessors, (659), 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) [2024-11-27 23:15:12,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 23:15:12,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:12,834 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:15:12,835 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:12,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash 450700766, now seen corresponding path program 1 times [2024-11-27 23:15:12,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:12,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663275036] [2024-11-27 23:15:12,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:12,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:13,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:13,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:13,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663275036] [2024-11-27 23:15:13,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663275036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:13,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:13,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:15:13,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211711911] [2024-11-27 23:15:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:13,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:15:13,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:13,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:15:13,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:15:13,050 INFO L87 Difference]: Start difference. First operand has 421 states, 408 states have (on average 1.6151960784313726) internal successors, (659), 415 states have internal predecessors, (659), 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) [2024-11-27 23:15:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:13,166 INFO L93 Difference]: Finished difference Result 840 states and 1353 transitions. [2024-11-27 23:15:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:15:13,168 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 [2024-11-27 23:15:13,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:13,188 INFO L225 Difference]: With dead ends: 840 [2024-11-27 23:15:13,188 INFO L226 Difference]: Without dead ends: 383 [2024-11-27 23:15:13,195 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 [2024-11-27 23:15:13,200 INFO L435 NwaCegarLoop]: 606 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, 606 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 [2024-11-27 23:15:13,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:15:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2024-11-27 23:15:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 383. [2024-11-27 23:15:13,282 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) [2024-11-27 23:15:13,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 555 transitions. [2024-11-27 23:15:13,299 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 555 transitions. Word has length 9 [2024-11-27 23:15:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:13,300 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 555 transitions. [2024-11-27 23:15:13,301 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) [2024-11-27 23:15:13,301 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 555 transitions. [2024-11-27 23:15:13,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-27 23:15:13,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:13,311 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] [2024-11-27 23:15:13,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:15:13,312 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:13,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:13,313 INFO L85 PathProgramCache]: Analyzing trace with hash -325315539, now seen corresponding path program 1 times [2024-11-27 23:15:13,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:13,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781360415] [2024-11-27 23:15:13,315 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:13,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:14,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:14,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:14,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781360415] [2024-11-27 23:15:14,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781360415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:14,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:14,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:14,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551283713] [2024-11-27 23:15:14,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:14,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:14,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:14,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:14,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:14,072 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) [2024-11-27 23:15:14,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:14,369 INFO L93 Difference]: Finished difference Result 931 states and 1360 transitions. [2024-11-27 23:15:14,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:15:14,370 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 [2024-11-27 23:15:14,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:14,376 INFO L225 Difference]: With dead ends: 931 [2024-11-27 23:15:14,376 INFO L226 Difference]: Without dead ends: 753 [2024-11-27 23:15:14,377 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 [2024-11-27 23:15:14,379 INFO L435 NwaCegarLoop]: 538 mSDtfsCounter, 524 mSDsluCounter, 1063 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 1601 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 [2024-11-27 23:15:14,380 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 1601 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:15:14,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-27 23:15:14,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 385. [2024-11-27 23:15:14,437 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) [2024-11-27 23:15:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 557 transitions. [2024-11-27 23:15:14,445 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 557 transitions. Word has length 64 [2024-11-27 23:15:14,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:14,445 INFO L471 AbstractCegarLoop]: Abstraction has 385 states and 557 transitions. [2024-11-27 23:15:14,445 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) [2024-11-27 23:15:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 557 transitions. [2024-11-27 23:15:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:15:14,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:14,459 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] [2024-11-27 23:15:14,459 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:15:14,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:14,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash 678969108, now seen corresponding path program 1 times [2024-11-27 23:15:14,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411263816] [2024-11-27 23:15:14,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:14,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:15,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:15,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:15,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411263816] [2024-11-27 23:15:15,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411263816] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:15,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:15,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:15,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114481178] [2024-11-27 23:15:15,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:15,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:15,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:15,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:15,178 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) [2024-11-27 23:15:15,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:15,318 INFO L93 Difference]: Finished difference Result 723 states and 1043 transitions. [2024-11-27 23:15:15,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:15,318 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 [2024-11-27 23:15:15,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:15,321 INFO L225 Difference]: With dead ends: 723 [2024-11-27 23:15:15,322 INFO L226 Difference]: Without dead ends: 342 [2024-11-27 23:15:15,323 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 [2024-11-27 23:15:15,324 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 [2024-11-27 23:15:15,324 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] [2024-11-27 23:15:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-27 23:15:15,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2024-11-27 23:15:15,337 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) [2024-11-27 23:15:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 479 transitions. [2024-11-27 23:15:15,340 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 479 transitions. Word has length 141 [2024-11-27 23:15:15,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:15,340 INFO L471 AbstractCegarLoop]: Abstraction has 342 states and 479 transitions. [2024-11-27 23:15:15,341 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) [2024-11-27 23:15:15,341 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 479 transitions. [2024-11-27 23:15:15,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-27 23:15:15,345 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:15,346 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] [2024-11-27 23:15:15,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:15:15,346 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:15,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:15,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1664993568, now seen corresponding path program 1 times [2024-11-27 23:15:15,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:15,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478897686] [2024-11-27 23:15:15,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:15,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:15,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:15:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:15,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478897686] [2024-11-27 23:15:15,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478897686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:15,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:15,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:15,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694831390] [2024-11-27 23:15:15,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:15,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:15,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:15,712 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:15,712 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:15,712 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) [2024-11-27 23:15:15,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:15,824 INFO L93 Difference]: Finished difference Result 917 states and 1300 transitions. [2024-11-27 23:15:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:15,826 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 [2024-11-27 23:15:15,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:15,832 INFO L225 Difference]: With dead ends: 917 [2024-11-27 23:15:15,833 INFO L226 Difference]: Without dead ends: 579 [2024-11-27 23:15:15,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:15,835 INFO L435 NwaCegarLoop]: 665 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, 1122 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 [2024-11-27 23:15:15,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1122 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:15:15,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2024-11-27 23:15:15,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 577. [2024-11-27 23:15:15,869 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) [2024-11-27 23:15:15,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 822 transitions. [2024-11-27 23:15:15,877 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 822 transitions. Word has length 141 [2024-11-27 23:15:15,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:15,878 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 822 transitions. [2024-11-27 23:15:15,878 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) [2024-11-27 23:15:15,878 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 822 transitions. [2024-11-27 23:15:15,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:15:15,884 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:15,885 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] [2024-11-27 23:15:15,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:15:15,885 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:15,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:15,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2091441029, now seen corresponding path program 1 times [2024-11-27 23:15:15,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:15,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747115996] [2024-11-27 23:15:15,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:15,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:16,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:16,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:16,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747115996] [2024-11-27 23:15:16,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747115996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:16,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:16,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:15:16,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610378938] [2024-11-27 23:15:16,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:16,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:15:16,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:16,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:15:16,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:15:16,301 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) [2024-11-27 23:15:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:16,382 INFO L93 Difference]: Finished difference Result 1119 states and 1605 transitions. [2024-11-27 23:15:16,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:15:16,383 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 [2024-11-27 23:15:16,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:16,387 INFO L225 Difference]: With dead ends: 1119 [2024-11-27 23:15:16,387 INFO L226 Difference]: Without dead ends: 577 [2024-11-27 23:15:16,388 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 [2024-11-27 23:15:16,389 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 [2024-11-27 23:15:16,390 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] [2024-11-27 23:15:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-27 23:15:16,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2024-11-27 23:15:16,413 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) [2024-11-27 23:15:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 816 transitions. [2024-11-27 23:15:16,417 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 816 transitions. Word has length 156 [2024-11-27 23:15:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:16,418 INFO L471 AbstractCegarLoop]: Abstraction has 577 states and 816 transitions. [2024-11-27 23:15:16,418 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) [2024-11-27 23:15:16,418 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 816 transitions. [2024-11-27 23:15:16,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:15:16,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:16,421 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] [2024-11-27 23:15:16,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:15:16,421 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:16,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:16,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1144403143, now seen corresponding path program 1 times [2024-11-27 23:15:16,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:16,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158693671] [2024-11-27 23:15:16,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:16,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:16,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:15:16,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158693671] [2024-11-27 23:15:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158693671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:16,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718380061] [2024-11-27 23:15:16,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:16,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:16,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:16,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:16,922 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) [2024-11-27 23:15:17,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:17,049 INFO L93 Difference]: Finished difference Result 815 states and 1167 transitions. [2024-11-27 23:15:17,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:17,050 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 [2024-11-27 23:15:17,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:17,053 INFO L225 Difference]: With dead ends: 815 [2024-11-27 23:15:17,054 INFO L226 Difference]: Without dead ends: 491 [2024-11-27 23:15:17,055 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 [2024-11-27 23:15:17,056 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 [2024-11-27 23:15:17,056 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] [2024-11-27 23:15:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-27 23:15:17,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2024-11-27 23:15:17,088 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) [2024-11-27 23:15:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 660 transitions. [2024-11-27 23:15:17,095 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 660 transitions. Word has length 156 [2024-11-27 23:15:17,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:17,096 INFO L471 AbstractCegarLoop]: Abstraction has 491 states and 660 transitions. [2024-11-27 23:15:17,096 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) [2024-11-27 23:15:17,096 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 660 transitions. [2024-11-27 23:15:17,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:15:17,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:17,097 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] [2024-11-27 23:15:17,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:15:17,098 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:17,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:17,098 INFO L85 PathProgramCache]: Analyzing trace with hash 532458547, now seen corresponding path program 1 times [2024-11-27 23:15:17,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:17,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982003274] [2024-11-27 23:15:17,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:17,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:17,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 23:15:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:17,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982003274] [2024-11-27 23:15:17,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982003274] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:17,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:17,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:15:17,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410214101] [2024-11-27 23:15:17,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:17,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:15:17,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:17,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:15:17,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:15:17,438 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) [2024-11-27 23:15:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:17,537 INFO L93 Difference]: Finished difference Result 717 states and 977 transitions. [2024-11-27 23:15:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:17,538 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 [2024-11-27 23:15:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:17,543 INFO L225 Difference]: With dead ends: 717 [2024-11-27 23:15:17,543 INFO L226 Difference]: Without dead ends: 479 [2024-11-27 23:15:17,544 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 [2024-11-27 23:15:17,546 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 [2024-11-27 23:15:17,547 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] [2024-11-27 23:15:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-27 23:15:17,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2024-11-27 23:15:17,570 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) [2024-11-27 23:15:17,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 640 transitions. [2024-11-27 23:15:17,574 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 640 transitions. Word has length 156 [2024-11-27 23:15:17,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:17,575 INFO L471 AbstractCegarLoop]: Abstraction has 479 states and 640 transitions. [2024-11-27 23:15:17,576 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) [2024-11-27 23:15:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 640 transitions. [2024-11-27 23:15:17,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-27 23:15:17,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:17,581 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] [2024-11-27 23:15:17,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:15:17,582 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:17,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:17,582 INFO L85 PathProgramCache]: Analyzing trace with hash -369558981, now seen corresponding path program 1 times [2024-11-27 23:15:17,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:17,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945771261] [2024-11-27 23:15:17,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:17,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:18,033 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:18,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:18,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945771261] [2024-11-27 23:15:18,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945771261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:18,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:18,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:15:18,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555433623] [2024-11-27 23:15:18,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:18,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:15:18,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:18,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:15:18,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:15:18,038 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) [2024-11-27 23:15:18,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:18,644 INFO L93 Difference]: Finished difference Result 949 states and 1270 transitions. [2024-11-27 23:15:18,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:15:18,645 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 [2024-11-27 23:15:18,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:18,649 INFO L225 Difference]: With dead ends: 949 [2024-11-27 23:15:18,649 INFO L226 Difference]: Without dead ends: 562 [2024-11-27 23:15:18,650 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 [2024-11-27 23:15:18,651 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 800 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:18,651 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 1087 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:15:18,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-27 23:15:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 381. [2024-11-27 23:15:18,674 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) [2024-11-27 23:15:18,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 502 transitions. [2024-11-27 23:15:18,678 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 502 transitions. Word has length 156 [2024-11-27 23:15:18,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:18,678 INFO L471 AbstractCegarLoop]: Abstraction has 381 states and 502 transitions. [2024-11-27 23:15:18,679 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) [2024-11-27 23:15:18,679 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 502 transitions. [2024-11-27 23:15:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-27 23:15:18,682 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:18,682 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] [2024-11-27 23:15:18,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:15:18,683 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:18,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:18,684 INFO L85 PathProgramCache]: Analyzing trace with hash 992373971, now seen corresponding path program 1 times [2024-11-27 23:15:18,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:18,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931244392] [2024-11-27 23:15:18,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:18,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:19,881 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:19,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931244392] [2024-11-27 23:15:19,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931244392] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:15:19,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475334350] [2024-11-27 23:15:19,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:19,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:19,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:15:19,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:15:19,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:15:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:20,551 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:15:20,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:15:20,618 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 [2024-11-27 23:15:21,009 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 [2024-11-27 23:15:21,019 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 [2024-11-27 23:15:21,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:21,033 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:15:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475334350] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:15:21,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:15:21,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-27 23:15:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679351733] [2024-11-27 23:15:21,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:15:21,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:15:21,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:21,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:15:21,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:15:21,413 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) [2024-11-27 23:15:21,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:21,859 INFO L93 Difference]: Finished difference Result 1260 states and 1673 transitions. [2024-11-27 23:15:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:15:21,860 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 [2024-11-27 23:15:21,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:21,866 INFO L225 Difference]: With dead ends: 1260 [2024-11-27 23:15:21,866 INFO L226 Difference]: Without dead ends: 1131 [2024-11-27 23:15:21,867 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 [2024-11-27 23:15:21,868 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 1493 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 2256 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:21,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 2256 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:15:21,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2024-11-27 23:15:21,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 736. [2024-11-27 23:15:21,917 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) [2024-11-27 23:15:21,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 967 transitions. [2024-11-27 23:15:21,923 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 967 transitions. Word has length 166 [2024-11-27 23:15:21,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:21,924 INFO L471 AbstractCegarLoop]: Abstraction has 736 states and 967 transitions. [2024-11-27 23:15:21,924 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) [2024-11-27 23:15:21,924 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 967 transitions. [2024-11-27 23:15:21,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-27 23:15:21,932 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:21,933 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] [2024-11-27 23:15:21,947 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:15:22,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:22,137 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:22,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:22,138 INFO L85 PathProgramCache]: Analyzing trace with hash 406257264, now seen corresponding path program 1 times [2024-11-27 23:15:22,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:22,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936803236] [2024-11-27 23:15:22,138 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:22,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:22,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936803236] [2024-11-27 23:15:27,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936803236] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:15:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545711223] [2024-11-27 23:15:27,385 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:27,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:15:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:15:27,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:15:27,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:15:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:15:28,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 1898 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 23:15:28,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:15:28,404 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 [2024-11-27 23:15:28,670 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 [2024-11-27 23:15:28,848 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 [2024-11-27 23:15:29,004 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 [2024-11-27 23:15:29,169 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 [2024-11-27 23:15:29,178 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 [2024-11-27 23:15:29,188 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:29,188 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:15:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:15:29,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545711223] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:15:29,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:15:29,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 19 [2024-11-27 23:15:29,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769580998] [2024-11-27 23:15:29,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:15:29,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:15:29,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:29,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:15:29,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:15:29,938 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) [2024-11-27 23:15:30,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:30,751 INFO L93 Difference]: Finished difference Result 2508 states and 3335 transitions. [2024-11-27 23:15:30,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 23:15:30,752 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 [2024-11-27 23:15:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:30,763 INFO L225 Difference]: With dead ends: 2508 [2024-11-27 23:15:30,763 INFO L226 Difference]: Without dead ends: 2379 [2024-11-27 23:15:30,765 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 786 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:15:30,766 INFO L435 NwaCegarLoop]: 408 mSDtfsCounter, 4547 mSDsluCounter, 4423 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4584 SdHoareTripleChecker+Valid, 4831 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:15:30,766 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4584 Valid, 4831 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:15:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2379 states. [2024-11-27 23:15:30,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2379 to 1618. [2024-11-27 23:15:30,846 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) [2024-11-27 23:15:30,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2125 transitions. [2024-11-27 23:15:30,854 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2125 transitions. Word has length 397 [2024-11-27 23:15:30,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:30,856 INFO L471 AbstractCegarLoop]: Abstraction has 1618 states and 2125 transitions. [2024-11-27 23:15:30,857 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) [2024-11-27 23:15:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2125 transitions. [2024-11-27 23:15:30,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-27 23:15:30,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:30,884 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] [2024-11-27 23:15:30,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:15:31,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:15:31,089 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:31,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:31,090 INFO L85 PathProgramCache]: Analyzing trace with hash -738434800, now seen corresponding path program 2 times [2024-11-27 23:15:31,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:31,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316249789] [2024-11-27 23:15:31,090 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:15:31,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:15:31,612 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:15:31,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:15:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3471 trivial. 0 not checked. [2024-11-27 23:15:31,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:15:31,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316249789] [2024-11-27 23:15:31,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316249789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:15:31,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:15:31,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:15:31,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080142001] [2024-11-27 23:15:31,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:15:31,922 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:15:31,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:15:31,923 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:15:31,923 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:15:31,924 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) [2024-11-27 23:15:32,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:15:32,470 INFO L93 Difference]: Finished difference Result 1751 states and 2305 transitions. [2024-11-27 23:15:32,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:15:32,472 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 [2024-11-27 23:15:32,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:15:32,482 INFO L225 Difference]: With dead ends: 1751 [2024-11-27 23:15:32,482 INFO L226 Difference]: Without dead ends: 1623 [2024-11-27 23:15:32,483 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 [2024-11-27 23:15:32,484 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 [2024-11-27 23:15:32,485 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] [2024-11-27 23:15:32,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1623 states. [2024-11-27 23:15:32,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1620. [2024-11-27 23:15:32,547 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) [2024-11-27 23:15:32,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1620 states to 1620 states and 2127 transitions. [2024-11-27 23:15:32,557 INFO L78 Accepts]: Start accepts. Automaton has 1620 states and 2127 transitions. Word has length 859 [2024-11-27 23:15:32,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:15:32,558 INFO L471 AbstractCegarLoop]: Abstraction has 1620 states and 2127 transitions. [2024-11-27 23:15:32,559 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) [2024-11-27 23:15:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1620 states and 2127 transitions. [2024-11-27 23:15:32,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-27 23:15:32,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:15:32,595 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] [2024-11-27 23:15:32,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:15:32,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:15:32,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:15:32,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1376148117, now seen corresponding path program 1 times [2024-11-27 23:15:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:15:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714785823] [2024-11-27 23:15:32,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:15:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:19:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 515 proven. 3 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-27 23:19:11,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:19:11,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714785823] [2024-11-27 23:19:11,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714785823] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:19:11,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815733953] [2024-11-27 23:19:11,186 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:19:11,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:19:11,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:19:11,192 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:19:11,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:19:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:19:55,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-27 23:19:55,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:19:55,687 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 [2024-11-27 23:19:55,995 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 [2024-11-27 23:19:56,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2024-11-27 23:19:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 917 proven. 34 refuted. 0 times theorem prover too weak. 2520 trivial. 0 not checked. [2024-11-27 23:19:58,236 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:20:02,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815733953] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:20:02,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:20:02,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 14] total 16 [2024-11-27 23:20:02,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908006082] [2024-11-27 23:20:02,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:20:02,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 23:20:02,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:02,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 23:20:02,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2024-11-27 23:20:02,241 INFO L87 Difference]: Start difference. First operand 1620 states and 2127 transitions. Second operand has 16 states, 16 states have (on average 21.3125) internal successors, (341), 16 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) [2024-11-27 23:20:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:07,881 INFO L93 Difference]: Finished difference Result 3288 states and 4324 transitions. [2024-11-27 23:20:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:20:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 21.3125) internal successors, (341), 16 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 [2024-11-27 23:20:07,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:07,892 INFO L225 Difference]: With dead ends: 3288 [2024-11-27 23:20:07,892 INFO L226 Difference]: Without dead ends: 1763 [2024-11-27 23:20:07,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1667 GetRequests, 1628 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 23:20:07,896 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 870 mSDsluCounter, 4359 mSDsCounter, 0 mSdLazyCounter, 1859 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 4875 SdHoareTripleChecker+Invalid, 1874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:07,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 4875 Invalid, 1874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1859 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-27 23:20:07,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1763 states. [2024-11-27 23:20:08,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1763 to 1628. [2024-11-27 23:20:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1605 states have (on average 1.3096573208722742) internal successors, (2102), 1611 states have internal predecessors, (2102), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:20:08,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2136 transitions. [2024-11-27 23:20:08,018 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2136 transitions. Word has length 860 [2024-11-27 23:20:08,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:08,018 INFO L471 AbstractCegarLoop]: Abstraction has 1628 states and 2136 transitions. [2024-11-27 23:20:08,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 21.3125) internal successors, (341), 16 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) [2024-11-27 23:20:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2136 transitions. [2024-11-27 23:20:08,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2024-11-27 23:20:08,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:08,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:08,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:20:08,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:20:08,231 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:08,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:08,232 INFO L85 PathProgramCache]: Analyzing trace with hash -556311693, now seen corresponding path program 1 times [2024-11-27 23:20:08,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:08,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521365924] [2024-11-27 23:20:08,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:08,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:20:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:20:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3473 backedges. 871 proven. 0 refuted. 0 times theorem prover too weak. 2602 trivial. 0 not checked. [2024-11-27 23:20:09,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:20:09,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521365924] [2024-11-27 23:20:09,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521365924] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:20:09,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:20:09,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:20:09,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015526715] [2024-11-27 23:20:09,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:20:09,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:20:09,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:20:09,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:20:09,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:20:09,762 INFO L87 Difference]: Start difference. First operand 1628 states and 2136 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) [2024-11-27 23:20:09,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:20:09,912 INFO L93 Difference]: Finished difference Result 3160 states and 4174 transitions. [2024-11-27 23:20:09,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:20:09,913 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 861 [2024-11-27 23:20:09,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:20:09,921 INFO L225 Difference]: With dead ends: 3160 [2024-11-27 23:20:09,922 INFO L226 Difference]: Without dead ends: 1565 [2024-11-27 23:20:09,924 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 [2024-11-27 23:20:09,926 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:20:09,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1067 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:20:09,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-27 23:20:10,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2024-11-27 23:20:10,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1542 states have (on average 1.3151750972762646) internal successors, (2028), 1548 states have internal predecessors, (2028), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:20:10,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2062 transitions. [2024-11-27 23:20:10,032 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2062 transitions. Word has length 861 [2024-11-27 23:20:10,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:20:10,033 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2062 transitions. [2024-11-27 23:20:10,033 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) [2024-11-27 23:20:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2062 transitions. [2024-11-27 23:20:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 863 [2024-11-27 23:20:10,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:20:10,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:20:10,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:20:10,053 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:20:10,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:20:10,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1865636993, now seen corresponding path program 1 times [2024-11-27 23:20:10,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:20:10,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735310337] [2024-11-27 23:20:10,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:20:10,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:21:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:01,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3473 backedges. 515 proven. 5 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-27 23:22:01,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735310337] [2024-11-27 23:22:01,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735310337] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:22:01,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322226488] [2024-11-27 23:22:01,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:01,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:01,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:22:01,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:22:01,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:22:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:20,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 4177 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:22:20,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:22:20,521 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 [2024-11-27 23:22:20,554 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 [2024-11-27 23:22:21,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3473 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 3165 trivial. 0 not checked. [2024-11-27 23:22:21,565 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:22:21,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322226488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:21,565 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:22:21,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-11-27 23:22:21,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724174388] [2024-11-27 23:22:21,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:21,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 23:22:21,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:21,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 23:22:21,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:22:21,568 INFO L87 Difference]: Start difference. First operand 1565 states and 2062 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) [2024-11-27 23:22:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:23,549 INFO L93 Difference]: Finished difference Result 3215 states and 4251 transitions. [2024-11-27 23:22:23,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 23:22:23,550 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 862 [2024-11-27 23:22:23,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:23,556 INFO L225 Difference]: With dead ends: 3215 [2024-11-27 23:22:23,557 INFO L226 Difference]: Without dead ends: 1689 [2024-11-27 23:22:23,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 874 GetRequests, 854 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:22:23,560 INFO L435 NwaCegarLoop]: 399 mSDtfsCounter, 444 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:23,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 2329 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:22:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2024-11-27 23:22:23,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1565. [2024-11-27 23:22:23,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1542 states have (on average 1.314526588845655) internal successors, (2027), 1548 states have internal predecessors, (2027), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:22:23,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2061 transitions. [2024-11-27 23:22:23,631 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2061 transitions. Word has length 862 [2024-11-27 23:22:23,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:23,632 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2061 transitions. [2024-11-27 23:22:23,632 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) [2024-11-27 23:22:23,632 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2061 transitions. [2024-11-27 23:22:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-11-27 23:22:23,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:23,645 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:23,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 23:22:23,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:22:23,846 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:23,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1662675483, now seen corresponding path program 2 times [2024-11-27 23:22:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54799367] [2024-11-27 23:22:23,847 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:22:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:24,234 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:22:24,235 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:22:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3474 trivial. 0 not checked. [2024-11-27 23:22:24,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:24,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54799367] [2024-11-27 23:22:24,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54799367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:24,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:24,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:22:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248482456] [2024-11-27 23:22:24,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:24,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:22:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:24,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:22:24,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:22:24,396 INFO L87 Difference]: Start difference. First operand 1565 states and 2061 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) [2024-11-27 23:22:24,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:24,608 INFO L93 Difference]: Finished difference Result 1695 states and 2235 transitions. [2024-11-27 23:22:24,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:22:24,609 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 863 [2024-11-27 23:22:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:24,616 INFO L225 Difference]: With dead ends: 1695 [2024-11-27 23:22:24,617 INFO L226 Difference]: Without dead ends: 1565 [2024-11-27 23:22:24,618 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 [2024-11-27 23:22:24,618 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 [2024-11-27 23:22:24,619 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] [2024-11-27 23:22:24,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-27 23:22:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1565. [2024-11-27 23:22:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 1542 states have (on average 1.3138780804150454) internal successors, (2026), 1548 states have internal predecessors, (2026), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:22:24,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2060 transitions. [2024-11-27 23:22:24,682 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2060 transitions. Word has length 863 [2024-11-27 23:22:24,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:24,684 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 2060 transitions. [2024-11-27 23:22:24,684 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) [2024-11-27 23:22:24,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2060 transitions. [2024-11-27 23:22:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2024-11-27 23:22:24,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:24,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:24,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:22:24,695 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:24,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:24,695 INFO L85 PathProgramCache]: Analyzing trace with hash -674471545, now seen corresponding path program 1 times [2024-11-27 23:22:24,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:24,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522875271] [2024-11-27 23:22:24,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:24,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:25,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3474 trivial. 0 not checked. [2024-11-27 23:22:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522875271] [2024-11-27 23:22:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522875271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:27,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:27,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:22:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2397178] [2024-11-27 23:22:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:27,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:22:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:27,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:22:27,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:22:27,191 INFO L87 Difference]: Start difference. First operand 1565 states and 2060 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) [2024-11-27 23:22:27,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:27,683 INFO L93 Difference]: Finished difference Result 1700 states and 2241 transitions. [2024-11-27 23:22:27,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:22:27,684 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 863 [2024-11-27 23:22:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:27,692 INFO L225 Difference]: With dead ends: 1700 [2024-11-27 23:22:27,692 INFO L226 Difference]: Without dead ends: 1570 [2024-11-27 23:22:27,693 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 [2024-11-27 23:22:27,694 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 10 mSDsluCounter, 1469 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:27,694 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1826 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:22:27,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-27 23:22:27,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1569. [2024-11-27 23:22:27,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1546 states have (on average 1.313712807244502) internal successors, (2031), 1552 states have internal predecessors, (2031), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:22:27,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2065 transitions. [2024-11-27 23:22:27,763 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2065 transitions. Word has length 863 [2024-11-27 23:22:27,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:27,765 INFO L471 AbstractCegarLoop]: Abstraction has 1569 states and 2065 transitions. [2024-11-27 23:22:27,765 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) [2024-11-27 23:22:27,765 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2065 transitions. [2024-11-27 23:22:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-27 23:22:27,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:27,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:27,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:22:27,777 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:27,778 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:27,778 INFO L85 PathProgramCache]: Analyzing trace with hash -274623995, now seen corresponding path program 1 times [2024-11-27 23:22:27,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322339683] [2024-11-27 23:22:27,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:27,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:30,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3474 trivial. 0 not checked. [2024-11-27 23:22:30,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:30,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322339683] [2024-11-27 23:22:30,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322339683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:30,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:30,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:22:30,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798131571] [2024-11-27 23:22:30,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:30,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:22:30,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:30,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:22:30,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:22:30,259 INFO L87 Difference]: Start difference. First operand 1569 states and 2065 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) [2024-11-27 23:22:30,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:30,602 INFO L93 Difference]: Finished difference Result 1706 states and 2248 transitions. [2024-11-27 23:22:30,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:22:30,602 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 864 [2024-11-27 23:22:30,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:30,608 INFO L225 Difference]: With dead ends: 1706 [2024-11-27 23:22:30,609 INFO L226 Difference]: Without dead ends: 1572 [2024-11-27 23:22:30,610 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 [2024-11-27 23:22:30,610 INFO L435 NwaCegarLoop]: 369 mSDtfsCounter, 4 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:22:30,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1545 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:22:30,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1572 states. [2024-11-27 23:22:30,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1572 to 1572. [2024-11-27 23:22:30,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1572 states, 1549 states have (on average 1.3131052291801162) internal successors, (2034), 1555 states have internal predecessors, (2034), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:22:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1572 states to 1572 states and 2068 transitions. [2024-11-27 23:22:30,677 INFO L78 Accepts]: Start accepts. Automaton has 1572 states and 2068 transitions. Word has length 864 [2024-11-27 23:22:30,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:30,678 INFO L471 AbstractCegarLoop]: Abstraction has 1572 states and 2068 transitions. [2024-11-27 23:22:30,678 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) [2024-11-27 23:22:30,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1572 states and 2068 transitions. [2024-11-27 23:22:30,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-27 23:22:30,688 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:30,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:30,689 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:22:30,689 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:30,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash -499348052, now seen corresponding path program 1 times [2024-11-27 23:22:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528550524] [2024-11-27 23:22:30,691 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:22:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:22:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3474 trivial. 0 not checked. [2024-11-27 23:22:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:22:33,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528550524] [2024-11-27 23:22:33,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528550524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:22:33,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:22:33,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 23:22:33,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186609907] [2024-11-27 23:22:33,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:22:33,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 23:22:33,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:22:33,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 23:22:33,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:22:33,577 INFO L87 Difference]: Start difference. First operand 1572 states and 2068 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) [2024-11-27 23:22:34,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:22:34,237 INFO L93 Difference]: Finished difference Result 1722 states and 2270 transitions. [2024-11-27 23:22:34,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:22:34,238 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 864 [2024-11-27 23:22:34,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:22:34,245 INFO L225 Difference]: With dead ends: 1722 [2024-11-27 23:22:34,245 INFO L226 Difference]: Without dead ends: 1585 [2024-11-27 23:22:34,246 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 [2024-11-27 23:22:34,247 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 [2024-11-27 23:22:34,247 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] [2024-11-27 23:22:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2024-11-27 23:22:34,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1582. [2024-11-27 23:22:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 1559 states have (on average 1.313662604233483) internal successors, (2048), 1565 states have internal predecessors, (2048), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:22:34,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 2082 transitions. [2024-11-27 23:22:34,312 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 2082 transitions. Word has length 864 [2024-11-27 23:22:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:22:34,313 INFO L471 AbstractCegarLoop]: Abstraction has 1582 states and 2082 transitions. [2024-11-27 23:22:34,314 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) [2024-11-27 23:22:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 2082 transitions. [2024-11-27 23:22:34,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2024-11-27 23:22:34,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:22:34,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:22:34,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:22:34,325 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:22:34,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:22:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -81605435, now seen corresponding path program 1 times [2024-11-27 23:22:34,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:22:34,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564084774] [2024-11-27 23:22:34,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:22:34,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:25:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 516 proven. 5 refuted. 0 times theorem prover too weak. 2953 trivial. 0 not checked. [2024-11-27 23:25:27,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:25:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564084774] [2024-11-27 23:25:27,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564084774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:25:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623619356] [2024-11-27 23:25:27,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:25:27,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:25:27,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:25:27,288 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:25:27,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:25:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:25:51,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 4179 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-27 23:25:51,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:25:51,100 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 [2024-11-27 23:25:51,364 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 [2024-11-27 23:25:51,548 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 [2024-11-27 23:25:51,691 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 [2024-11-27 23:25:51,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-27 23:25:52,357 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:25:52,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 115 treesize of output 69 [2024-11-27 23:25:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3474 backedges. 1713 proven. 330 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked. [2024-11-27 23:25:52,693 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:25:53,673 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 23:25:53,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 26 [2024-11-27 23:26:01,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623619356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:26:01,845 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:26:01,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15] total 18 [2024-11-27 23:26:01,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998042791] [2024-11-27 23:26:01,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 23:26:01,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 23:26:01,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:01,848 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 23:26:01,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=759, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:26:01,849 INFO L87 Difference]: Start difference. First operand 1582 states and 2082 transitions. Second operand has 18 states, 18 states have (on average 27.944444444444443) internal successors, (503), 18 states have internal predecessors, (503), 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) [2024-11-27 23:26:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:08,917 INFO L93 Difference]: Finished difference Result 3363 states and 4435 transitions. [2024-11-27 23:26:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 23:26:08,918 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 27.944444444444443) internal successors, (503), 18 states have internal predecessors, (503), 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 864 [2024-11-27 23:26:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:08,922 INFO L225 Difference]: With dead ends: 3363 [2024-11-27 23:26:08,922 INFO L226 Difference]: Without dead ends: 1873 [2024-11-27 23:26:08,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1674 GetRequests, 1630 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=262, Invalid=1544, Unknown=0, NotChecked=0, Total=1806 [2024-11-27 23:26:08,925 INFO L435 NwaCegarLoop]: 1042 mSDtfsCounter, 922 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 11137 SdHoareTripleChecker+Invalid, 3784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:08,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 11137 Invalid, 3784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 3762 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-27 23:26:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2024-11-27 23:26:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1583. [2024-11-27 23:26:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1560 states have (on average 1.3128205128205128) internal successors, (2048), 1566 states have internal predecessors, (2048), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:26:08,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2082 transitions. [2024-11-27 23:26:09,000 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2082 transitions. Word has length 864 [2024-11-27 23:26:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:09,003 INFO L471 AbstractCegarLoop]: Abstraction has 1583 states and 2082 transitions. [2024-11-27 23:26:09,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 27.944444444444443) internal successors, (503), 18 states have internal predecessors, (503), 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) [2024-11-27 23:26:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2082 transitions. [2024-11-27 23:26:09,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2024-11-27 23:26:09,022 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:09,022 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, 7, 3, 3, 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] [2024-11-27 23:26:09,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:26:09,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e5366110-7522-4dac-975a-99496f5ef11d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:26:09,223 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:09,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:09,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1102210971, now seen corresponding path program 2 times [2024-11-27 23:26:09,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:09,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612979763] [2024-11-27 23:26:09,224 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 23:26:09,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:26:09,558 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 23:26:09,558 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 23:26:09,844 INFO L134 CoverageAnalysis]: Checked inductivity of 3479 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3479 trivial. 0 not checked. [2024-11-27 23:26:09,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:26:09,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612979763] [2024-11-27 23:26:09,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612979763] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:26:09,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:26:09,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 23:26:09,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017021341] [2024-11-27 23:26:09,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:26:09,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 23:26:09,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:26:09,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 23:26:09,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:26:09,850 INFO L87 Difference]: Start difference. First operand 1583 states and 2082 transitions. Second operand has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 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) [2024-11-27 23:26:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:26:10,235 INFO L93 Difference]: Finished difference Result 1733 states and 2282 transitions. [2024-11-27 23:26:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:26:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 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 866 [2024-11-27 23:26:10,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:26:10,242 INFO L225 Difference]: With dead ends: 1733 [2024-11-27 23:26:10,243 INFO L226 Difference]: Without dead ends: 1586 [2024-11-27 23:26:10,244 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:26:10,244 INFO L435 NwaCegarLoop]: 362 mSDtfsCounter, 23 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:26:10,245 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1880 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:26:10,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2024-11-27 23:26:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1586. [2024-11-27 23:26:10,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1586 states, 1563 states have (on average 1.3122200895713372) internal successors, (2051), 1569 states have internal predecessors, (2051), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 13 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-27 23:26:10,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1586 states to 1586 states and 2085 transitions. [2024-11-27 23:26:10,306 INFO L78 Accepts]: Start accepts. Automaton has 1586 states and 2085 transitions. Word has length 866 [2024-11-27 23:26:10,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:26:10,307 INFO L471 AbstractCegarLoop]: Abstraction has 1586 states and 2085 transitions. [2024-11-27 23:26:10,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.75) internal successors, (166), 8 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) [2024-11-27 23:26:10,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1586 states and 2085 transitions. [2024-11-27 23:26:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2024-11-27 23:26:10,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:26:10,317 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, 7, 3, 3, 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] [2024-11-27 23:26:10,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:26:10,318 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:26:10,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:26:10,318 INFO L85 PathProgramCache]: Analyzing trace with hash -630846200, now seen corresponding path program 1 times [2024-11-27 23:26:10,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:26:10,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551867068] [2024-11-27 23:26:10,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:26:10,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms