./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/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 ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:23:52,401 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:23:52,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:23:52,537 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:23:52,537 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:23:52,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:23:52,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:23:52,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:23:52,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:23:52,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:23:52,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:23:52,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:23:52,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:23:52,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:23:52,567 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:23:52,567 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:23:52,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:23:52,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:23:52,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:23:52,570 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:23:52,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:23:52,571 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:23:52,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:23:52,572 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:23:52,572 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:23:52,572 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:23:52,572 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/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 -> ef232f94cb2adf03185aed5adfaef3f0eb9593ee06bfb5b3fbb6e4bc1dd6d041 [2024-11-28 04:23:52,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:23:52,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:23:52,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:23:52,976 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:23:52,977 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:23:52,978 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2024-11-28 04:23:56,056 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/data/8cf7851fa/7b19c5c797a14bdd888c5287983f9c8c/FLAG712396253 [2024-11-28 04:23:56,374 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:23:56,375 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i [2024-11-28 04:23:56,392 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/data/8cf7851fa/7b19c5c797a14bdd888c5287983f9c8c/FLAG712396253 [2024-11-28 04:23:56,416 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/data/8cf7851fa/7b19c5c797a14bdd888c5287983f9c8c [2024-11-28 04:23:56,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:23:56,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:23:56,425 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:23:56,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:23:56,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:23:56,432 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:23:56" (1/1) ... [2024-11-28 04:23:56,433 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e0a6f61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:56, skipping insertion in model container [2024-11-28 04:23:56,433 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:23:56" (1/1) ... [2024-11-28 04:23:56,488 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:23:57,069 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2024-11-28 04:23:57,213 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2024-11-28 04:23:57,214 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2024-11-28 04:23:57,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:23:57,248 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:23:57,296 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[33021,33034] [2024-11-28 04:23:57,420 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44124,44137] [2024-11-28 04:23:57,422 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_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test7-2.i[44245,44258] [2024-11-28 04:23:57,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:23:57,488 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:23:57,489 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57 WrapperNode [2024-11-28 04:23:57,489 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:23:57,490 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:23:57,490 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:23:57,490 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:23:57,498 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,535 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,645 INFO L138 Inliner]: procedures = 176, calls = 320, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1549 [2024-11-28 04:23:57,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:23:57,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:23:57,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:23:57,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:23:57,659 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,681 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,834 INFO L175 MemorySlicer]: Split 301 memory accesses to 3 slices as follows [2, 265, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-28 04:23:57,834 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,876 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,939 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:23:57,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:23:57,940 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:23:57,940 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:23:57,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (1/1) ... [2024-11-28 04:23:57,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:23:57,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:23:57,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:23:57,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:23:58,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:23:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:23:58,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 04:23:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:23:58,016 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:23:58,017 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 04:23:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:23:58,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:23:58,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:23:58,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:23:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:23:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:23:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:23:58,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:23:58,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:23:58,313 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:23:58,316 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:24:00,507 INFO L? ?]: Removed 335 outVars from TransFormulas that were not future-live. [2024-11-28 04:24:00,508 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:24:00,543 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:24:00,544 INFO L312 CfgBuilder]: Removed 41 assume(true) statements. [2024-11-28 04:24:00,548 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:00 BoogieIcfgContainer [2024-11-28 04:24:00,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:24:00,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:24:00,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:24:00,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:24:00,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:23:56" (1/3) ... [2024-11-28 04:24:00,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef34cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:00, skipping insertion in model container [2024-11-28 04:24:00,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:23:57" (2/3) ... [2024-11-28 04:24:00,565 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ef34cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:24:00, skipping insertion in model container [2024-11-28 04:24:00,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:24:00" (3/3) ... [2024-11-28 04:24:00,567 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test7-2.i [2024-11-28 04:24:00,590 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:24:00,593 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test7-2.i that has 4 procedures, 443 locations, 1 initial locations, 43 loop locations, and 2 error locations. [2024-11-28 04:24:00,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:24:00,702 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;@54ab460, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:24:00,702 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-28 04:24:00,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 435 states, 428 states have (on average 1.6191588785046729) internal successors, (693), 430 states have internal predecessors, (693), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:00,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:24:00,717 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:00,718 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:00,718 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:00,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:00,726 INFO L85 PathProgramCache]: Analyzing trace with hash 591703179, now seen corresponding path program 1 times [2024-11-28 04:24:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:00,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505222515] [2024-11-28 04:24:00,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:00,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:00,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:00,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:00,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505222515] [2024-11-28 04:24:00,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505222515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:00,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:00,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:24:00,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553698964] [2024-11-28 04:24:00,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:00,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:24:00,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:00,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:24:00,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:24:00,939 INFO L87 Difference]: Start difference. First operand has 435 states, 428 states have (on average 1.6191588785046729) internal successors, (693), 430 states have internal predecessors, (693), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:01,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:01,054 INFO L93 Difference]: Finished difference Result 868 states and 1396 transitions. [2024-11-28 04:24:01,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:24:01,057 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-28 04:24:01,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:01,075 INFO L225 Difference]: With dead ends: 868 [2024-11-28 04:24:01,075 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 04:24:01,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:24:01,088 INFO L435 NwaCegarLoop]: 621 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, 621 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:01,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:24:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 04:24:01,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-28 04:24:01,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 391 states have (on average 1.4424552429667519) internal successors, (564), 392 states have internal predecessors, (564), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 570 transitions. [2024-11-28 04:24:01,195 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 570 transitions. Word has length 8 [2024-11-28 04:24:01,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:01,196 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 570 transitions. [2024-11-28 04:24:01,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:01,196 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 570 transitions. [2024-11-28 04:24:01,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 04:24:01,197 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:01,197 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:01,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:24:01,199 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:01,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:01,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1735047096, now seen corresponding path program 1 times [2024-11-28 04:24:01,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:01,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515061003] [2024-11-28 04:24:01,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:01,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:01,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:01,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515061003] [2024-11-28 04:24:01,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515061003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:01,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:01,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:01,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334643795] [2024-11-28 04:24:01,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:01,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:01,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:01,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:01,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:01,518 INFO L87 Difference]: Start difference. First operand 397 states and 570 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:01,811 INFO L93 Difference]: Finished difference Result 979 states and 1410 transitions. [2024-11-28 04:24:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:01,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2024-11-28 04:24:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:01,817 INFO L225 Difference]: With dead ends: 979 [2024-11-28 04:24:01,817 INFO L226 Difference]: Without dead ends: 787 [2024-11-28 04:24:01,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:01,820 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 554 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:01,821 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [557 Valid, 1737 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:24:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2024-11-28 04:24:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 399. [2024-11-28 04:24:01,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 393 states have (on average 1.440203562340967) internal successors, (566), 394 states have internal predecessors, (566), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:01,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 572 transitions. [2024-11-28 04:24:01,881 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 572 transitions. Word has length 10 [2024-11-28 04:24:01,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:01,882 INFO L471 AbstractCegarLoop]: Abstraction has 399 states and 572 transitions. [2024-11-28 04:24:01,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:01,882 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 572 transitions. [2024-11-28 04:24:01,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:24:01,888 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:01,889 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] [2024-11-28 04:24:01,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:24:01,889 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:01,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1815897567, now seen corresponding path program 1 times [2024-11-28 04:24:01,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:01,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607315341] [2024-11-28 04:24:01,890 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:01,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:02,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:02,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607315341] [2024-11-28 04:24:02,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607315341] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:02,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:02,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:02,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094219857] [2024-11-28 04:24:02,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:02,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:02,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:02,519 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:02,519 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:02,520 INFO L87 Difference]: Start difference. First operand 399 states and 572 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:02,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:02,673 INFO L93 Difference]: Finished difference Result 751 states and 1073 transitions. [2024-11-28 04:24:02,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:24:02,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 87 [2024-11-28 04:24:02,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:02,676 INFO L225 Difference]: With dead ends: 751 [2024-11-28 04:24:02,676 INFO L226 Difference]: Without dead ends: 356 [2024-11-28 04:24:02,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:02,678 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 30 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1382 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:02,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1382 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:02,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-28 04:24:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2024-11-28 04:24:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 350 states have (on average 1.3942857142857144) internal successors, (488), 351 states have internal predecessors, (488), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:02,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 494 transitions. [2024-11-28 04:24:02,708 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 494 transitions. Word has length 87 [2024-11-28 04:24:02,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:02,708 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 494 transitions. [2024-11-28 04:24:02,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:02,708 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 494 transitions. [2024-11-28 04:24:02,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:24:02,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:02,715 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] [2024-11-28 04:24:02,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:24:02,715 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:02,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:02,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1229704981, now seen corresponding path program 1 times [2024-11-28 04:24:02,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:02,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569551992] [2024-11-28 04:24:02,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:02,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:02,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:03,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:24:03,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:03,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569551992] [2024-11-28 04:24:03,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569551992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:03,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:03,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:24:03,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648055814] [2024-11-28 04:24:03,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:03,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:03,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:03,060 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:03,060 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:03,061 INFO L87 Difference]: Start difference. First operand 356 states and 494 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:03,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:03,231 INFO L93 Difference]: Finished difference Result 964 states and 1349 transitions. [2024-11-28 04:24:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:03,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 87 [2024-11-28 04:24:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:03,236 INFO L225 Difference]: With dead ends: 964 [2024-11-28 04:24:03,238 INFO L226 Difference]: Without dead ends: 612 [2024-11-28 04:24:03,239 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:03,240 INFO L435 NwaCegarLoop]: 675 mSDtfsCounter, 299 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:03,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 1137 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:03,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-28 04:24:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 605. [2024-11-28 04:24:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 599 states have (on average 1.4123539232053421) internal successors, (846), 600 states have internal predecessors, (846), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:03,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 852 transitions. [2024-11-28 04:24:03,284 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 852 transitions. Word has length 87 [2024-11-28 04:24:03,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:03,285 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 852 transitions. [2024-11-28 04:24:03,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:24:03,286 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 852 transitions. [2024-11-28 04:24:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:24:03,290 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:03,290 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] [2024-11-28 04:24:03,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:24:03,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:03,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash -946256560, now seen corresponding path program 1 times [2024-11-28 04:24:03,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906810355] [2024-11-28 04:24:03,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:03,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:03,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:03,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906810355] [2024-11-28 04:24:03,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906810355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:03,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:03,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:24:03,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452946286] [2024-11-28 04:24:03,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:03,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:24:03,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:03,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:24:03,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:03,662 INFO L87 Difference]: Start difference. First operand 605 states and 852 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:03,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:03,746 INFO L93 Difference]: Finished difference Result 1175 states and 1665 transitions. [2024-11-28 04:24:03,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:24:03,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 102 [2024-11-28 04:24:03,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:03,752 INFO L225 Difference]: With dead ends: 1175 [2024-11-28 04:24:03,752 INFO L226 Difference]: Without dead ends: 605 [2024-11-28 04:24:03,753 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:24:03,755 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 0 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:03,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 938 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:03,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-28 04:24:03,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-28 04:24:03,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 599 states have (on average 1.4023372287145242) internal successors, (840), 600 states have internal predecessors, (840), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:03,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 846 transitions. [2024-11-28 04:24:03,814 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 846 transitions. Word has length 102 [2024-11-28 04:24:03,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:03,817 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 846 transitions. [2024-11-28 04:24:03,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:03,817 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 846 transitions. [2024-11-28 04:24:03,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:24:03,818 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:03,818 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] [2024-11-28 04:24:03,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:24:03,819 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:03,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1440252946, now seen corresponding path program 1 times [2024-11-28 04:24:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:03,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374812885] [2024-11-28 04:24:03,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:04,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:24:04,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:04,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374812885] [2024-11-28 04:24:04,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374812885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:04,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:04,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:04,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852113214] [2024-11-28 04:24:04,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:04,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:04,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:04,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:04,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:04,456 INFO L87 Difference]: Start difference. First operand 605 states and 846 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:04,609 INFO L93 Difference]: Finished difference Result 891 states and 1248 transitions. [2024-11-28 04:24:04,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:04,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 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 102 [2024-11-28 04:24:04,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:04,615 INFO L225 Difference]: With dead ends: 891 [2024-11-28 04:24:04,616 INFO L226 Difference]: Without dead ends: 887 [2024-11-28 04:24:04,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:04,618 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 463 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:04,619 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1395 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:04,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-28 04:24:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 607. [2024-11-28 04:24:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 601 states have (on average 1.4009983361064893) internal successors, (842), 602 states have internal predecessors, (842), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:04,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 848 transitions. [2024-11-28 04:24:04,659 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 848 transitions. Word has length 102 [2024-11-28 04:24:04,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:04,660 INFO L471 AbstractCegarLoop]: Abstraction has 607 states and 848 transitions. [2024-11-28 04:24:04,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:04,661 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 848 transitions. [2024-11-28 04:24:04,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:24:04,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:04,667 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:04,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:24:04,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:04,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1658774407, now seen corresponding path program 1 times [2024-11-28 04:24:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698012577] [2024-11-28 04:24:04,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:05,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:24:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698012577] [2024-11-28 04:24:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698012577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:05,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249469506] [2024-11-28 04:24:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:05,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:05,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:05,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:05,175 INFO L87 Difference]: Start difference. First operand 607 states and 848 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:05,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:05,319 INFO L93 Difference]: Finished difference Result 873 states and 1229 transitions. [2024-11-28 04:24:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:24:05,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:24:05,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:05,324 INFO L225 Difference]: With dead ends: 873 [2024-11-28 04:24:05,324 INFO L226 Difference]: Without dead ends: 521 [2024-11-28 04:24:05,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:05,326 INFO L435 NwaCegarLoop]: 380 mSDtfsCounter, 36 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:05,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1126 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:05,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2024-11-28 04:24:05,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 521. [2024-11-28 04:24:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 515 states have (on average 1.3320388349514563) internal successors, (686), 516 states have internal predecessors, (686), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 692 transitions. [2024-11-28 04:24:05,349 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 692 transitions. Word has length 156 [2024-11-28 04:24:05,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:05,350 INFO L471 AbstractCegarLoop]: Abstraction has 521 states and 692 transitions. [2024-11-28 04:24:05,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:05,351 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 692 transitions. [2024-11-28 04:24:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:24:05,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:05,353 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:05,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:24:05,353 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:05,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:05,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1046829811, now seen corresponding path program 1 times [2024-11-28 04:24:05,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:05,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136734424] [2024-11-28 04:24:05,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:05,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:05,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:24:05,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:05,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136734424] [2024-11-28 04:24:05,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136734424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:05,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:05,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:05,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897631178] [2024-11-28 04:24:05,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:05,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:05,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:05,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:05,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:05,731 INFO L87 Difference]: Start difference. First operand 521 states and 692 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:05,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:05,826 INFO L93 Difference]: Finished difference Result 775 states and 1039 transitions. [2024-11-28 04:24:05,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:24:05,827 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:24:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:05,829 INFO L225 Difference]: With dead ends: 775 [2024-11-28 04:24:05,830 INFO L226 Difference]: Without dead ends: 509 [2024-11-28 04:24:05,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:05,831 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 9 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:05,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1127 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:05,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2024-11-28 04:24:05,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 509. [2024-11-28 04:24:05,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 503 states have (on average 1.3240556660039762) internal successors, (666), 504 states have internal predecessors, (666), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:05,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 672 transitions. [2024-11-28 04:24:05,856 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 672 transitions. Word has length 156 [2024-11-28 04:24:05,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:05,856 INFO L471 AbstractCegarLoop]: Abstraction has 509 states and 672 transitions. [2024-11-28 04:24:05,857 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 672 transitions. [2024-11-28 04:24:05,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 04:24:05,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:05,864 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:05,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:24:05,864 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:05,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:05,865 INFO L85 PathProgramCache]: Analyzing trace with hash 144812283, now seen corresponding path program 1 times [2024-11-28 04:24:05,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128790321] [2024-11-28 04:24:05,865 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:05,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:06,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:06,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:06,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128790321] [2024-11-28 04:24:06,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128790321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:06,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:06,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:24:06,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546657207] [2024-11-28 04:24:06,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:06,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:24:06,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:06,336 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:24:06,336 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:24:06,337 INFO L87 Difference]: Start difference. First operand 509 states and 672 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:07,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:07,124 INFO L93 Difference]: Finished difference Result 1266 states and 1676 transitions. [2024-11-28 04:24:07,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:24:07,126 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 156 [2024-11-28 04:24:07,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:07,130 INFO L225 Difference]: With dead ends: 1266 [2024-11-28 04:24:07,130 INFO L226 Difference]: Without dead ends: 849 [2024-11-28 04:24:07,131 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:24:07,132 INFO L435 NwaCegarLoop]: 469 mSDtfsCounter, 1154 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1360 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:07,132 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1360 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:24:07,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-28 04:24:07,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 643. [2024-11-28 04:24:07,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 637 states have (on average 1.3281004709576139) internal successors, (846), 638 states have internal predecessors, (846), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 04:24:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 852 transitions. [2024-11-28 04:24:07,165 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 852 transitions. Word has length 156 [2024-11-28 04:24:07,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:07,165 INFO L471 AbstractCegarLoop]: Abstraction has 643 states and 852 transitions. [2024-11-28 04:24:07,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:07,166 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 852 transitions. [2024-11-28 04:24:07,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:24:07,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:07,168 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:07,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:24:07,168 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:07,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:07,169 INFO L85 PathProgramCache]: Analyzing trace with hash -478229613, now seen corresponding path program 1 times [2024-11-28 04:24:07,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:07,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101074517] [2024-11-28 04:24:07,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:07,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:08,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:08,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101074517] [2024-11-28 04:24:08,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101074517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:08,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2147076509] [2024-11-28 04:24:08,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:08,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:08,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:08,313 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:08,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:24:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:08,905 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:24:08,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:08,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:24:09,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:09,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:24:09,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:09,384 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:24:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2147076509] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:24:09,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:24:09,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 11 [2024-11-28 04:24:09,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243776238] [2024-11-28 04:24:09,716 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:24:09,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:24:09,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:09,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:24:09,718 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:24:09,718 INFO L87 Difference]: Start difference. First operand 643 states and 852 transitions. Second operand has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:10,121 INFO L93 Difference]: Finished difference Result 2859 states and 3806 transitions. [2024-11-28 04:24:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:24:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 166 [2024-11-28 04:24:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:10,131 INFO L225 Difference]: With dead ends: 2859 [2024-11-28 04:24:10,132 INFO L226 Difference]: Without dead ends: 2468 [2024-11-28 04:24:10,133 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 325 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:24:10,134 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 2560 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2566 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:10,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2566 Valid, 3128 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:24:10,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2468 states. [2024-11-28 04:24:10,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2468 to 998. [2024-11-28 04:24:10,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 988 states have (on average 1.3208502024291497) internal successors, (1305), 989 states have internal predecessors, (1305), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 04:24:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1317 transitions. [2024-11-28 04:24:10,204 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1317 transitions. Word has length 166 [2024-11-28 04:24:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:10,205 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1317 transitions. [2024-11-28 04:24:10,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 22.727272727272727) internal successors, (250), 11 states have internal predecessors, (250), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:10,205 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1317 transitions. [2024-11-28 04:24:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2024-11-28 04:24:10,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:10,213 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:10,225 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:24:10,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 04:24:10,414 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:10,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:10,415 INFO L85 PathProgramCache]: Analyzing trace with hash 6974640, now seen corresponding path program 1 times [2024-11-28 04:24:10,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:10,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534328131] [2024-11-28 04:24:10,415 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:10,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:15,821 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:15,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534328131] [2024-11-28 04:24:15,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534328131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:15,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532100377] [2024-11-28 04:24:15,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:15,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:15,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:15,826 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:15,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:24:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:16,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 1896 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 04:24:16,815 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:16,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:24:17,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:17,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:17,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:17,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:17,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:24:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:17,683 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:24:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 464 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:18,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532100377] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:24:18,517 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:24:18,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 19 [2024-11-28 04:24:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024905304] [2024-11-28 04:24:18,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:24:18,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:24:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:18,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:24:18,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:24:18,521 INFO L87 Difference]: Start difference. First operand 998 states and 1317 transitions. Second operand has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:19,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:19,472 INFO L93 Difference]: Finished difference Result 6069 states and 8087 transitions. [2024-11-28 04:24:19,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:24:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 397 [2024-11-28 04:24:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:19,496 INFO L225 Difference]: With dead ends: 6069 [2024-11-28 04:24:19,496 INFO L226 Difference]: Without dead ends: 5678 [2024-11-28 04:24:19,499 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 786 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=224, Invalid=426, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:24:19,500 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 5620 mSDsluCounter, 4785 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5632 SdHoareTripleChecker+Valid, 5214 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:19,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5632 Valid, 5214 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:24:19,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5678 states. [2024-11-28 04:24:19,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5678 to 1880. [2024-11-28 04:24:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1880 states, 1864 states have (on average 1.3149141630901287) internal successors, (2451), 1865 states have internal predecessors, (2451), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 04:24:19,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1880 states to 1880 states and 2475 transitions. [2024-11-28 04:24:19,764 INFO L78 Accepts]: Start accepts. Automaton has 1880 states and 2475 transitions. Word has length 397 [2024-11-28 04:24:19,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:19,765 INFO L471 AbstractCegarLoop]: Abstraction has 1880 states and 2475 transitions. [2024-11-28 04:24:19,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 37.68421052631579) internal successors, (716), 19 states have internal predecessors, (716), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:19,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1880 states and 2475 transitions. [2024-11-28 04:24:19,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 860 [2024-11-28 04:24:19,810 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:19,812 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:19,827 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:24:20,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:24:20,013 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:20,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:20,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1172029616, now seen corresponding path program 2 times [2024-11-28 04:24:20,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:20,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221613355] [2024-11-28 04:24:20,016 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:24:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:20,494 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:24:20,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:24:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3471 trivial. 0 not checked. [2024-11-28 04:24:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:20,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221613355] [2024-11-28 04:24:20,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221613355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:20,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:20,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:24:20,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495228944] [2024-11-28 04:24:20,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:20,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:24:20,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:20,755 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:24:20,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:24:20,756 INFO L87 Difference]: Start difference. First operand 1880 states and 2475 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:21,258 INFO L93 Difference]: Finished difference Result 2283 states and 3019 transitions. [2024-11-28 04:24:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:24:21,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 859 [2024-11-28 04:24:21,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:21,268 INFO L225 Difference]: With dead ends: 2283 [2024-11-28 04:24:21,268 INFO L226 Difference]: Without dead ends: 1895 [2024-11-28 04:24:21,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:24:21,270 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 10 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:21,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1622 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:24:21,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2024-11-28 04:24:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1886. [2024-11-28 04:24:21,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1870 states have (on average 1.313903743315508) internal successors, (2457), 1871 states have internal predecessors, (2457), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 04:24:21,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 2481 transitions. [2024-11-28 04:24:21,399 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 2481 transitions. Word has length 859 [2024-11-28 04:24:21,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:21,401 INFO L471 AbstractCegarLoop]: Abstraction has 1886 states and 2481 transitions. [2024-11-28 04:24:21,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 6 states have internal predecessors, (161), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:21,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 2481 transitions. [2024-11-28 04:24:21,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2024-11-28 04:24:21,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:21,432 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:21,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:24:21,433 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:21,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:21,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1932766165, now seen corresponding path program 1 times [2024-11-28 04:24:21,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:21,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498076950] [2024-11-28 04:24:21,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:21,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:22,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 3467 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:34,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498076950] [2024-11-28 04:24:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498076950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:24:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285749789] [2024-11-28 04:24:34,809 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:34,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:24:34,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:24:34,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:24:34,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:24:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:36,625 INFO L256 TraceCheckSpWp]: Trace formula consists of 4159 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:24:36,648 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:24:36,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:24:36,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:37,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:38,028 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:38,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:38,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:24:38,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:24:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 3467 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:38,348 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:24:40,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3471 backedges. 0 proven. 3467 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:24:40,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285749789] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:24:40,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:24:40,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15, 14] total 32 [2024-11-28 04:24:40,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792698844] [2024-11-28 04:24:40,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:24:40,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 04:24:40,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:40,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 04:24:40,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=411, Invalid=581, Unknown=0, NotChecked=0, Total=992 [2024-11-28 04:24:40,115 INFO L87 Difference]: Start difference. First operand 1886 states and 2481 transitions. Second operand has 32 states, 32 states have (on average 51.34375) internal successors, (1643), 32 states have internal predecessors, (1643), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:42,945 INFO L93 Difference]: Finished difference Result 12629 states and 16789 transitions. [2024-11-28 04:24:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 04:24:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 51.34375) internal successors, (1643), 32 states have internal predecessors, (1643), 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 860 [2024-11-28 04:24:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:42,995 INFO L225 Difference]: With dead ends: 12629 [2024-11-28 04:24:42,995 INFO L226 Difference]: Without dead ends: 12232 [2024-11-28 04:24:43,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1758 GetRequests, 1707 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=872, Invalid=1578, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:24:43,001 INFO L435 NwaCegarLoop]: 429 mSDtfsCounter, 15807 mSDsluCounter, 10184 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15831 SdHoareTripleChecker+Valid, 10613 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:43,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15831 Valid, 10613 Invalid, 437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [67 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:24:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12232 states. [2024-11-28 04:24:43,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12232 to 3650. [2024-11-28 04:24:43,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3622 states have (on average 1.3111540585311983) internal successors, (4749), 3623 states have internal predecessors, (4749), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 04:24:43,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4797 transitions. [2024-11-28 04:24:43,249 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4797 transitions. Word has length 860 [2024-11-28 04:24:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:43,252 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 4797 transitions. [2024-11-28 04:24:43,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 51.34375) internal successors, (1643), 32 states have internal predecessors, (1643), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:24:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4797 transitions. [2024-11-28 04:24:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1785 [2024-11-28 04:24:43,283 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:43,284 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:43,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:24:43,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 04:24:43,485 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:43,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -2128437525, now seen corresponding path program 2 times [2024-11-28 04:24:43,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:43,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118226419] [2024-11-28 04:24:43,487 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:24:43,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:44,250 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:24:44,250 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:24:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17793 trivial. 0 not checked. [2024-11-28 04:24:44,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:44,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118226419] [2024-11-28 04:24:44,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118226419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:44,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:44,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:24:44,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013321468] [2024-11-28 04:24:44,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:44,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:24:44,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:44,443 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:24:44,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:44,444 INFO L87 Difference]: Start difference. First operand 3650 states and 4797 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:44,687 INFO L93 Difference]: Finished difference Result 4044 states and 5323 transitions. [2024-11-28 04:24:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:24:44,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 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 1784 [2024-11-28 04:24:44,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:44,712 INFO L225 Difference]: With dead ends: 4044 [2024-11-28 04:24:44,712 INFO L226 Difference]: Without dead ends: 3650 [2024-11-28 04:24:44,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:24:44,715 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 13 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:44,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 1039 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:24:44,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3650 states. [2024-11-28 04:24:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3650 to 3650. [2024-11-28 04:24:44,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3622 states have (on average 1.3103257868580895) internal successors, (4746), 3623 states have internal predecessors, (4746), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 04:24:44,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 4794 transitions. [2024-11-28 04:24:44,914 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 4794 transitions. Word has length 1784 [2024-11-28 04:24:44,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:44,916 INFO L471 AbstractCegarLoop]: Abstraction has 3650 states and 4794 transitions. [2024-11-28 04:24:44,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:44,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 4794 transitions. [2024-11-28 04:24:44,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1785 [2024-11-28 04:24:44,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:44,944 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:44,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:24:44,944 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:44,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:44,947 INFO L85 PathProgramCache]: Analyzing trace with hash -170617257, now seen corresponding path program 1 times [2024-11-28 04:24:44,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:44,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035770024] [2024-11-28 04:24:44,947 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:44,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17793 trivial. 0 not checked. [2024-11-28 04:24:51,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:51,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035770024] [2024-11-28 04:24:51,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035770024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:51,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:51,666 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:24:51,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150907513] [2024-11-28 04:24:51,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:51,667 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:24:51,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:51,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:24:51,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:24:51,673 INFO L87 Difference]: Start difference. First operand 3650 states and 4794 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:52,236 INFO L93 Difference]: Finished difference Result 4059 states and 5341 transitions. [2024-11-28 04:24:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:24:52,244 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 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 1784 [2024-11-28 04:24:52,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:52,264 INFO L225 Difference]: With dead ends: 4059 [2024-11-28 04:24:52,264 INFO L226 Difference]: Without dead ends: 3665 [2024-11-28 04:24:52,268 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:24:52,268 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 10 mSDsluCounter, 1569 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1946 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 [2024-11-28 04:24:52,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1946 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:24:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2024-11-28 04:24:52,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3662. [2024-11-28 04:24:52,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3662 states, 3634 states have (on average 1.3101265822784811) internal successors, (4761), 3635 states have internal predecessors, (4761), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 04:24:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 4809 transitions. [2024-11-28 04:24:52,589 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 4809 transitions. Word has length 1784 [2024-11-28 04:24:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:52,592 INFO L471 AbstractCegarLoop]: Abstraction has 3662 states and 4809 transitions. [2024-11-28 04:24:52,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:52,593 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 4809 transitions. [2024-11-28 04:24:52,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1786 [2024-11-28 04:24:52,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:52,658 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:52,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:24:52,665 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:52,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:52,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1835090891, now seen corresponding path program 1 times [2024-11-28 04:24:52,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:52,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226223165] [2024-11-28 04:24:52,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:52,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:24:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:24:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17793 trivial. 0 not checked. [2024-11-28 04:24:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:24:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226223165] [2024-11-28 04:24:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226223165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:24:58,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:24:58,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:24:58,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245641214] [2024-11-28 04:24:58,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:24:58,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:24:58,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:24:58,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:24:58,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:24:58,680 INFO L87 Difference]: Start difference. First operand 3662 states and 4809 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:59,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:24:59,026 INFO L93 Difference]: Finished difference Result 4077 states and 5362 transitions. [2024-11-28 04:24:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:24:59,027 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 1785 [2024-11-28 04:24:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:24:59,038 INFO L225 Difference]: With dead ends: 4077 [2024-11-28 04:24:59,038 INFO L226 Difference]: Without dead ends: 3671 [2024-11-28 04:24:59,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:24:59,040 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 4 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:24:59,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1349 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:24:59,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3671 states. [2024-11-28 04:24:59,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3671 to 3671. [2024-11-28 04:24:59,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3671 states, 3643 states have (on average 1.3093604172385396) internal successors, (4770), 3644 states have internal predecessors, (4770), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 04:24:59,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3671 states to 3671 states and 4818 transitions. [2024-11-28 04:24:59,233 INFO L78 Accepts]: Start accepts. Automaton has 3671 states and 4818 transitions. Word has length 1785 [2024-11-28 04:24:59,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:24:59,235 INFO L471 AbstractCegarLoop]: Abstraction has 3671 states and 4818 transitions. [2024-11-28 04:24:59,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:24:59,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3671 states and 4818 transitions. [2024-11-28 04:24:59,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1786 [2024-11-28 04:24:59,262 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:24:59,262 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:24:59,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:24:59,263 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:24:59,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:24:59,264 INFO L85 PathProgramCache]: Analyzing trace with hash -2059814948, now seen corresponding path program 1 times [2024-11-28 04:24:59,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:24:59,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43269836] [2024-11-28 04:24:59,265 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:24:59,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17793 trivial. 0 not checked. [2024-11-28 04:25:06,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43269836] [2024-11-28 04:25:06,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43269836] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:25:06,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:25:06,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:25:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965006356] [2024-11-28 04:25:06,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:25:06,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:25:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:25:06,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:25:06,446 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:25:06,446 INFO L87 Difference]: Start difference. First operand 3671 states and 4818 transitions. Second operand has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:25:07,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:25:07,218 INFO L93 Difference]: Finished difference Result 4125 states and 5428 transitions. [2024-11-28 04:25:07,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:25:07,219 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 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 1785 [2024-11-28 04:25:07,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:25:07,233 INFO L225 Difference]: With dead ends: 4125 [2024-11-28 04:25:07,234 INFO L226 Difference]: Without dead ends: 3710 [2024-11-28 04:25:07,236 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:25:07,236 INFO L435 NwaCegarLoop]: 378 mSDtfsCounter, 30 mSDsluCounter, 2263 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:25:07,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 2641 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:25:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3710 states. [2024-11-28 04:25:07,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3710 to 3701. [2024-11-28 04:25:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3701 states, 3673 states have (on average 1.3101007350939287) internal successors, (4812), 3674 states have internal predecessors, (4812), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-28 04:25:07,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 4860 transitions. [2024-11-28 04:25:07,449 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 4860 transitions. Word has length 1785 [2024-11-28 04:25:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:25:07,451 INFO L471 AbstractCegarLoop]: Abstraction has 3701 states and 4860 transitions. [2024-11-28 04:25:07,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.11111111111111) internal successors, (163), 9 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:25:07,452 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 4860 transitions. [2024-11-28 04:25:07,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1786 [2024-11-28 04:25:07,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:25:07,517 INFO L218 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:25:07,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:25:07,518 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:25:07,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:25:07,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1642072331, now seen corresponding path program 1 times [2024-11-28 04:25:07,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:25:07,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865922704] [2024-11-28 04:25:07,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:07,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:25:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:54,940 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 17789 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:25:54,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:25:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865922704] [2024-11-28 04:25:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865922704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:25:54,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658864959] [2024-11-28 04:25:54,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:25:54,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:25:54,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:25:54,945 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:25:54,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:25:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:25:58,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 8684 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 04:25:58,942 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:25:58,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:25:59,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:25:59,436 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:25:59,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:25:59,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:25:59,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:25:59,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:00,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:01,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:02,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:26:02,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:26:02,095 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 17789 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:26:02,095 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:26:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17793 backedges. 0 proven. 17789 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:26:06,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658864959] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:26:06,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:26:06,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 27, 26] total 56 [2024-11-28 04:26:06,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716037669] [2024-11-28 04:26:06,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:26:06,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2024-11-28 04:26:06,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:06,302 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2024-11-28 04:26:06,303 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1383, Invalid=1697, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 04:26:06,305 INFO L87 Difference]: Start difference. First operand 3701 states and 4860 transitions. Second operand has 56 states, 56 states have (on average 62.357142857142854) internal successors, (3492), 56 states have internal predecessors, (3492), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:26:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:18,387 INFO L93 Difference]: Finished difference Result 28027 states and 37039 transitions. [2024-11-28 04:26:18,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2024-11-28 04:26:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 62.357142857142854) internal successors, (3492), 56 states have internal predecessors, (3492), 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 1785 [2024-11-28 04:26:18,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:18,443 INFO L225 Difference]: With dead ends: 28027 [2024-11-28 04:26:18,443 INFO L226 Difference]: Without dead ends: 27579 [2024-11-28 04:26:18,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3644 GetRequests, 3545 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=3464, Invalid=6042, Unknown=0, NotChecked=0, Total=9506 [2024-11-28 04:26:18,454 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 45736 mSDsluCounter, 19721 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45784 SdHoareTripleChecker+Valid, 20149 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:18,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45784 Valid, 20149 Invalid, 883 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [197 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:26:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27579 states. [2024-11-28 04:26:18,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27579 to 7229. [2024-11-28 04:26:18,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7229 states, 7177 states have (on average 1.309182109516511) internal successors, (9396), 7178 states have internal predecessors, (9396), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 04:26:18,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7229 states to 7229 states and 9492 transitions. [2024-11-28 04:26:18,884 INFO L78 Accepts]: Start accepts. Automaton has 7229 states and 9492 transitions. Word has length 1785 [2024-11-28 04:26:18,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:18,886 INFO L471 AbstractCegarLoop]: Abstraction has 7229 states and 9492 transitions. [2024-11-28 04:26:18,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 62.357142857142854) internal successors, (3492), 56 states have internal predecessors, (3492), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:26:18,887 INFO L276 IsEmpty]: Start isEmpty. Operand 7229 states and 9492 transitions. [2024-11-28 04:26:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3634 [2024-11-28 04:26:18,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:19,000 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:19,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:26:19,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:26:19,202 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:19,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1374482805, now seen corresponding path program 2 times [2024-11-28 04:26:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:19,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217910023] [2024-11-28 04:26:19,206 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:26:19,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:20,701 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:26:20,701 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:26:21,080 INFO L134 CoverageAnalysis]: Checked inductivity of 79701 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79701 trivial. 0 not checked. [2024-11-28 04:26:21,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:26:21,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217910023] [2024-11-28 04:26:21,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217910023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:26:21,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:26:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:26:21,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178118229] [2024-11-28 04:26:21,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:26:21,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:26:21,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:26:21,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:26:21,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:21,085 INFO L87 Difference]: Start difference. First operand 7229 states and 9492 transitions. Second operand has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:26:21,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:26:21,662 INFO L93 Difference]: Finished difference Result 7692 states and 10111 transitions. [2024-11-28 04:26:21,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:26:21,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 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 3633 [2024-11-28 04:26:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:26:21,684 INFO L225 Difference]: With dead ends: 7692 [2024-11-28 04:26:21,685 INFO L226 Difference]: Without dead ends: 7247 [2024-11-28 04:26:21,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:26:21,689 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 7 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:26:21,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1643 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:26:21,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7247 states. [2024-11-28 04:26:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7247 to 7247. [2024-11-28 04:26:21,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7247 states, 7195 states have (on average 1.308408617095205) internal successors, (9414), 7196 states have internal predecessors, (9414), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-28 04:26:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7247 states to 7247 states and 9510 transitions. [2024-11-28 04:26:21,995 INFO L78 Accepts]: Start accepts. Automaton has 7247 states and 9510 transitions. Word has length 3633 [2024-11-28 04:26:21,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:26:21,998 INFO L471 AbstractCegarLoop]: Abstraction has 7247 states and 9510 transitions. [2024-11-28 04:26:21,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.166666666666668) internal successors, (163), 6 states have internal predecessors, (163), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:26:21,999 INFO L276 IsEmpty]: Start isEmpty. Operand 7247 states and 9510 transitions. [2024-11-28 04:26:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3635 [2024-11-28 04:26:22,104 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:26:22,105 INFO L218 NwaCegarLoop]: trace histogram [47, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:26:22,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 04:26:22,105 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:26:22,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:26:22,107 INFO L85 PathProgramCache]: Analyzing trace with hash -780434578, now seen corresponding path program 1 times [2024-11-28 04:26:22,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:26:22,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284609601] [2024-11-28 04:26:22,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:26:22,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:26:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 79701 backedges. 0 proven. 79697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:30:22,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:30:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284609601] [2024-11-28 04:30:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284609601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:22,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235643262] [2024-11-28 04:30:22,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:22,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:22,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:22,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:22,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:30:30,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:30,420 INFO L256 TraceCheckSpWp]: Trace formula consists of 17730 conjuncts, 97 conjuncts are in the unsatisfiable core [2024-11-28 04:30:30,500 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:30,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:30:30,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:30,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,712 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:31,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:32,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:32,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:32,535 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:32,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:32,883 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:33,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:34,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:35,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:36,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:37,010 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:37,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-28 04:30:37,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:30:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 79701 backedges. 0 proven. 79697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:30:37,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 79701 backedges. 0 proven. 79697 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:30:46,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235643262] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:46,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:46,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 51, 50] total 105 [2024-11-28 04:30:46,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817568135] [2024-11-28 04:30:46,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:46,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2024-11-28 04:30:46,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:30:46,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2024-11-28 04:30:46,544 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5131, Invalid=5789, Unknown=0, NotChecked=0, Total=10920 [2024-11-28 04:30:46,547 INFO L87 Difference]: Start difference. First operand 7247 states and 9510 transitions. Second operand has 105 states, 105 states have (on average 68.48571428571428) internal successors, (7191), 105 states have internal predecessors, (7191), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:32:36,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:36,053 INFO L93 Difference]: Finished difference Result 58159 states and 76315 transitions. [2024-11-28 04:32:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2024-11-28 04:32:36,056 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 68.48571428571428) internal successors, (7191), 105 states have internal predecessors, (7191), 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 3634 [2024-11-28 04:32:36,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:36,163 INFO L225 Difference]: With dead ends: 58159 [2024-11-28 04:32:36,163 INFO L226 Difference]: Without dead ends: 57693 [2024-11-28 04:32:36,184 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7415 GetRequests, 7220 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8173 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=13832, Invalid=23610, Unknown=0, NotChecked=0, Total=37442 [2024-11-28 04:32:36,185 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 120227 mSDsluCounter, 38780 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120323 SdHoareTripleChecker+Valid, 39208 SdHoareTripleChecker+Invalid, 1793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.5s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:36,185 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120323 Valid, 39208 Invalid, 1793 Unknown, 0 Unchecked, 0.5s Time], IncrementalHoareTripleChecker [516 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:32:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57693 states. [2024-11-28 04:32:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57693 to 14303. [2024-11-28 04:32:37,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14303 states, 14203 states have (on average 1.3083151446877421) internal successors, (18582), 14204 states have internal predecessors, (18582), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:32:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14303 states to 14303 states and 18774 transitions. [2024-11-28 04:32:37,103 INFO L78 Accepts]: Start accepts. Automaton has 14303 states and 18774 transitions. Word has length 3634 [2024-11-28 04:32:37,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:37,106 INFO L471 AbstractCegarLoop]: Abstraction has 14303 states and 18774 transitions. [2024-11-28 04:32:37,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 68.48571428571428) internal successors, (7191), 105 states have internal predecessors, (7191), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:32:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 14303 states and 18774 transitions. [2024-11-28 04:32:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7331 [2024-11-28 04:32:37,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:37,539 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:37,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:32:37,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1215b720-9b6b-4e7d-b2ea-8d1a47d0c84a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:37,740 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:32:37,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1815391854, now seen corresponding path program 2 times [2024-11-28 04:32:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:32:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27284655] [2024-11-28 04:32:37,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:32:37,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:32:41,151 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:32:41,151 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:33:02,238 INFO L134 CoverageAnalysis]: Checked inductivity of 336573 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 336573 trivial. 0 not checked. [2024-11-28 04:33:02,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:33:02,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27284655] [2024-11-28 04:33:02,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27284655] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:33:02,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:33:02,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 04:33:02,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735646096] [2024-11-28 04:33:02,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:33:02,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:33:02,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:33:02,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:33:02,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-28 04:33:02,242 INFO L87 Difference]: Start difference. First operand 14303 states and 18774 transitions. Second operand has 17 states, 17 states have (on average 9.647058823529411) internal successors, (164), 17 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:33:06,233 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:10,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:14,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:18,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:22,533 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:26,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:30,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:34,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:38,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:42,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:46,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:50,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:54,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:33:58,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:02,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:06,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:10,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:14,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:18,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:25,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:27,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:29,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-28 04:34:30,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:30,446 INFO L93 Difference]: Finished difference Result 14923 states and 19616 transitions. [2024-11-28 04:34:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-28 04:34:30,447 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 9.647058823529411) internal successors, (164), 17 states have internal predecessors, (164), 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 7330 [2024-11-28 04:34:30,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:30,480 INFO L225 Difference]: With dead ends: 14923 [2024-11-28 04:34:30,480 INFO L226 Difference]: Without dead ends: 14460 [2024-11-28 04:34:30,485 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:34:30,486 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 105 mSDsluCounter, 4132 mSDsCounter, 0 mSdLazyCounter, 1263 mSolverCounterSat, 11 mSolverCounterUnsat, 19 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 4493 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1263 IncrementalHoareTripleChecker+Invalid, 19 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 86.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:30,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 4493 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1263 Invalid, 19 Unknown, 0 Unchecked, 86.6s Time] [2024-11-28 04:34:30,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14460 states. [2024-11-28 04:34:31,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14460 to 14339. [2024-11-28 04:34:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14339 states, 14239 states have (on average 1.3085890863122411) internal successors, (18633), 14240 states have internal predecessors, (18633), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-28 04:34:31,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14339 states to 14339 states and 18825 transitions. [2024-11-28 04:34:31,183 INFO L78 Accepts]: Start accepts. Automaton has 14339 states and 18825 transitions. Word has length 7330 [2024-11-28 04:34:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:31,192 INFO L471 AbstractCegarLoop]: Abstraction has 14339 states and 18825 transitions. [2024-11-28 04:34:31,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 9.647058823529411) internal successors, (164), 17 states have internal predecessors, (164), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:34:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 14339 states and 18825 transitions. [2024-11-28 04:34:31,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7332 [2024-11-28 04:34:31,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:31,522 INFO L218 NwaCegarLoop]: trace histogram [95, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 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] [2024-11-28 04:34:31,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 04:34:31,523 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:34:31,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:31,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1132073409, now seen corresponding path program 1 times [2024-11-28 04:34:31,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:34:31,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674902039] [2024-11-28 04:34:31,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:31,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:34:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat