./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/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_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/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 64bit --witnessprinter.graph.data.programhash 4327c1d0a3798141341f75fbfeacee6e434c9dfc309a1d3ed778376faac4823c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:35:51,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:35:52,067 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:35:52,079 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:35:52,079 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:35:52,116 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:35:52,117 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:35:52,117 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:35:52,117 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:35:52,117 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:35:52,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:35:52,118 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:35:52,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:35:52,119 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:35:52,119 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:35:52,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:35:52,119 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:35:52,120 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:35:52,120 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:35:52,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:35:52,121 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:35:52,121 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:35:52,122 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:35:52,122 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_573abd3f-d908-4bf6-977e-6c061e3a0149/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4327c1d0a3798141341f75fbfeacee6e434c9dfc309a1d3ed778376faac4823c [2024-11-28 03:35:52,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:35:52,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:35:52,462 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:35:52,463 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:35:52,464 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:35:52,465 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2024-11-28 03:35:55,358 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/data/0ffd2fbd2/418266d4070b4d6096eb73c2720b7520/FLAGc428c51e6 [2024-11-28 03:35:56,130 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:35:56,134 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i [2024-11-28 03:35:56,194 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/data/0ffd2fbd2/418266d4070b4d6096eb73c2720b7520/FLAGc428c51e6 [2024-11-28 03:35:56,216 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/data/0ffd2fbd2/418266d4070b4d6096eb73c2720b7520 [2024-11-28 03:35:56,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:35:56,221 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:35:56,222 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:35:56,223 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:35:56,228 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:35:56,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:56" (1/1) ... [2024-11-28 03:35:56,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626cb629 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:56, skipping insertion in model container [2024-11-28 03:35:56,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:35:56" (1/1) ... [2024-11-28 03:35:56,326 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:35:56,599 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2024-11-28 03:35:56,606 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_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2024-11-28 03:35:57,642 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,643 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,644 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,645 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,646 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,662 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,668 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,670 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,671 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,675 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:57,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,802 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,803 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,825 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,826 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,837 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,838 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,852 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,853 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,853 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,854 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,854 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,854 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,855 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:58,891 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_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[228391,228404] [2024-11-28 03:35:58,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:35:58,941 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:35:58,961 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_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4493,4506] [2024-11-28 03:35:58,961 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_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[4553,4566] [2024-11-28 03:35:59,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,073 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,074 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,077 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,079 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,181 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7526-7537] [2024-11-28 03:35:59,299 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,299 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,309 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,311 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,315 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,316 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,331 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,333 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,334 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,335 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,336 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,337 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,338 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:35:59,363 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_573abd3f-d908-4bf6-977e-6c061e3a0149/sv-benchmarks/c/aws-c-common/aws_hash_table_swap_harness_negated.i[228391,228404] [2024-11-28 03:35:59,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:35:59,677 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:35:59,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59 WrapperNode [2024-11-28 03:35:59,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:35:59,678 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:35:59,679 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:35:59,679 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:35:59,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:35:59,802 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:35:59,888 INFO L138 Inliner]: procedures = 763, calls = 2436, calls flagged for inlining = 67, calls inlined = 9, statements flattened = 598 [2024-11-28 03:35:59,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:35:59,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:35:59,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:35:59,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:35:59,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:35:59,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:35:59,906 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,004 INFO L175 MemorySlicer]: Split 284 memory accesses to 9 slices as follows [2, 2, 238, 3, 17, 9, 6, 5, 2]. 84 percent of accesses are in the largest equivalence class. The 14 initializations are split as follows [2, 1, 6, 0, 0, 0, 0, 5, 0]. The 240 writes are split as follows [0, 0, 232, 1, 1, 3, 2, 0, 1]. [2024-11-28 03:36:00,004 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,070 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,075 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,092 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,107 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:36:00,108 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:36:00,108 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:36:00,108 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:36:00,109 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (1/1) ... [2024-11-28 03:36:00,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:36:00,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:00,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:36:00,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:36:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#5 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#6 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#7 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#8 [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_hash_table [2024-11-28 03:36:00,182 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_hash_table [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:36:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 03:36:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 03:36:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 03:36:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:36:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 03:36:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 03:36:00,186 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 03:36:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:36:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:36:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 03:36:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 03:36:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:36:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:36:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 03:36:00,188 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 03:36:00,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 03:36:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 03:36:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 03:36:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:36:00,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:36:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:36:00,189 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:36:00,189 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 03:36:00,190 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 03:36:00,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:36:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 03:36:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 03:36:00,191 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:36:00,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_allocated_hash_table [2024-11-28 03:36:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_allocated_hash_table [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 03:36:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 03:36:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 03:36:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure check_hash_table_unchanged [2024-11-28 03:36:00,192 INFO L138 BoogieDeclarations]: Found implementation of procedure check_hash_table_unchanged [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:36:00,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 03:36:00,193 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 03:36:00,193 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 03:36:00,676 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:36:00,678 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:36:06,751 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-28 03:36:06,751 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:36:06,766 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:36:06,766 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:36:06,766 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:06 BoogieIcfgContainer [2024-11-28 03:36:06,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:36:06,769 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:36:06,769 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:36:06,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:36:06,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:35:56" (1/3) ... [2024-11-28 03:36:06,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ea9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:06, skipping insertion in model container [2024-11-28 03:36:06,778 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:35:59" (2/3) ... [2024-11-28 03:36:06,778 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@370ea9f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:36:06, skipping insertion in model container [2024-11-28 03:36:06,779 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:36:06" (3/3) ... [2024-11-28 03:36:06,780 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_swap_harness_negated.i [2024-11-28 03:36:06,796 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:36:06,797 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_swap_harness_negated.i that has 17 procedures, 142 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 03:36:06,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:36:06,878 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;@67a2feaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:36:06,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:36:06,883 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-28 03:36:06,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:36:06,892 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:06,892 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:06,893 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:06,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:06,899 INFO L85 PathProgramCache]: Analyzing trace with hash 35159209, now seen corresponding path program 1 times [2024-11-28 03:36:06,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:06,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676528195] [2024-11-28 03:36:06,907 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:06,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:14,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:14,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676528195] [2024-11-28 03:36:14,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676528195] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:14,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:36:14,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:36:14,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016883500] [2024-11-28 03:36:14,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:14,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:36:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:14,195 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:36:14,195 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:36:14,198 INFO L87 Difference]: Start difference. First operand has 142 states, 89 states have (on average 1.202247191011236) internal successors, (107), 94 states have internal predecessors, (107), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:14,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:14,236 INFO L93 Difference]: Finished difference Result 280 states and 374 transitions. [2024-11-28 03:36:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:36:14,238 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 03:36:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:14,246 INFO L225 Difference]: With dead ends: 280 [2024-11-28 03:36:14,246 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 03:36:14,250 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:36:14,253 INFO L435 NwaCegarLoop]: 174 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, 174 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:14,254 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:36:14,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 03:36:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-28 03:36:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 85 states have (on average 1.1647058823529413) internal successors, (99), 89 states have internal predecessors, (99), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-28 03:36:14,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 168 transitions. [2024-11-28 03:36:14,321 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 168 transitions. Word has length 25 [2024-11-28 03:36:14,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:14,321 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 168 transitions. [2024-11-28 03:36:14,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 168 transitions. [2024-11-28 03:36:14,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:36:14,328 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:14,328 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:14,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:36:14,329 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:14,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:14,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1958985497, now seen corresponding path program 1 times [2024-11-28 03:36:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:14,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528788464] [2024-11-28 03:36:14,330 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:14,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:20,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:21,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528788464] [2024-11-28 03:36:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528788464] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:21,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:36:21,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:36:21,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356522159] [2024-11-28 03:36:21,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:21,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:36:21,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:21,173 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:36:21,174 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:36:21,176 INFO L87 Difference]: Start difference. First operand 137 states and 168 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:21,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:21,289 INFO L93 Difference]: Finished difference Result 192 states and 238 transitions. [2024-11-28 03:36:21,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:36:21,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 03:36:21,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:21,298 INFO L225 Difference]: With dead ends: 192 [2024-11-28 03:36:21,298 INFO L226 Difference]: Without dead ends: 148 [2024-11-28 03:36:21,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:36:21,300 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 2 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:21,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 330 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:36:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-28 03:36:21,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-28 03:36:21,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 91 states have (on average 1.164835164835165) internal successors, (106), 95 states have internal predecessors, (106), 40 states have call successors, (40), 16 states have call predecessors, (40), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 03:36:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 185 transitions. [2024-11-28 03:36:21,331 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 185 transitions. Word has length 25 [2024-11-28 03:36:21,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:21,333 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 185 transitions. [2024-11-28 03:36:21,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:21,334 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 185 transitions. [2024-11-28 03:36:21,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:36:21,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:21,336 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:21,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:36:21,336 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:21,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:21,341 INFO L85 PathProgramCache]: Analyzing trace with hash -63722128, now seen corresponding path program 1 times [2024-11-28 03:36:21,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:21,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032592362] [2024-11-28 03:36:21,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:21,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:27,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:36:27,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:27,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032592362] [2024-11-28 03:36:27,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032592362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:27,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:36:27,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:36:27,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074956909] [2024-11-28 03:36:27,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:27,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:36:27,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:27,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:36:27,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:36:27,536 INFO L87 Difference]: Start difference. First operand 148 states and 185 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:27,596 INFO L93 Difference]: Finished difference Result 202 states and 250 transitions. [2024-11-28 03:36:27,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:36:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-28 03:36:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:27,598 INFO L225 Difference]: With dead ends: 202 [2024-11-28 03:36:27,599 INFO L226 Difference]: Without dead ends: 157 [2024-11-28 03:36:27,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:36:27,603 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 2 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:27,603 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 332 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:36:27,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-28 03:36:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2024-11-28 03:36:27,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 99 states have internal predecessors, (110), 44 states have call successors, (44), 16 states have call predecessors, (44), 16 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 03:36:27,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 196 transitions. [2024-11-28 03:36:27,631 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 196 transitions. Word has length 26 [2024-11-28 03:36:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:27,631 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 196 transitions. [2024-11-28 03:36:27,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:36:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 196 transitions. [2024-11-28 03:36:27,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 03:36:27,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:27,639 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:27,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:36:27,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:27,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:27,641 INFO L85 PathProgramCache]: Analyzing trace with hash -780183786, now seen corresponding path program 1 times [2024-11-28 03:36:27,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860010327] [2024-11-28 03:36:27,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:27,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-28 03:36:34,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860010327] [2024-11-28 03:36:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860010327] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:34,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306149764] [2024-11-28 03:36:34,335 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:34,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:34,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:34,339 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:34,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:36:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:40,978 INFO L256 TraceCheckSpWp]: Trace formula consists of 4483 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:36:40,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:41,117 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 03:36:41,117 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:36:41,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306149764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:41,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:36:41,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 03:36:41,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909237955] [2024-11-28 03:36:41,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:41,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:36:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:41,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:36:41,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:36:41,120 INFO L87 Difference]: Start difference. First operand 157 states and 196 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 03:36:41,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:36:41,283 INFO L93 Difference]: Finished difference Result 313 states and 397 transitions. [2024-11-28 03:36:41,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:36:41,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 128 [2024-11-28 03:36:41,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:36:41,286 INFO L225 Difference]: With dead ends: 313 [2024-11-28 03:36:41,286 INFO L226 Difference]: Without dead ends: 162 [2024-11-28 03:36:41,287 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:36:41,288 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:36:41,288 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 656 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:36:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-28 03:36:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2024-11-28 03:36:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 100 states have (on average 1.14) internal successors, (114), 103 states have internal predecessors, (114), 44 states have call successors, (44), 16 states have call predecessors, (44), 17 states have return successors, (43), 43 states have call predecessors, (43), 42 states have call successors, (43) [2024-11-28 03:36:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 201 transitions. [2024-11-28 03:36:41,310 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 201 transitions. Word has length 128 [2024-11-28 03:36:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:36:41,311 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 201 transitions. [2024-11-28 03:36:41,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 03:36:41,311 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 201 transitions. [2024-11-28 03:36:41,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:36:41,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:36:41,318 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:36:41,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 03:36:41,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:41,519 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:36:41,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:36:41,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1412508686, now seen corresponding path program 1 times [2024-11-28 03:36:41,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:36:41,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686348708] [2024-11-28 03:36:41,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:41,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:36:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:50,642 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 03:36:50,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:36:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686348708] [2024-11-28 03:36:50,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686348708] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:36:50,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741647173] [2024-11-28 03:36:50,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:36:50,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:36:50,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:36:50,646 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:36:50,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:36:57,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:36:57,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 4491 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-28 03:36:57,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:36:58,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:36:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:36:59,740 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:36:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741647173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:36:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:36:59,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [11] total 18 [2024-11-28 03:36:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73614990] [2024-11-28 03:36:59,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:36:59,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:36:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:36:59,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:36:59,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:36:59,743 INFO L87 Difference]: Start difference. First operand 162 states and 201 transitions. Second operand has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 03:37:04,031 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:37:11,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:37:15,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:37:20,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:37:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:20,423 INFO L93 Difference]: Finished difference Result 405 states and 493 transitions. [2024-11-28 03:37:20,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 03:37:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 140 [2024-11-28 03:37:20,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:20,429 INFO L225 Difference]: With dead ends: 405 [2024-11-28 03:37:20,429 INFO L226 Difference]: Without dead ends: 259 [2024-11-28 03:37:20,430 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:37:20,431 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 131 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:20,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1882 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 468 Invalid, 4 Unknown, 0 Unchecked, 19.8s Time] [2024-11-28 03:37:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-28 03:37:20,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 255. [2024-11-28 03:37:20,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 163 states have (on average 1.147239263803681) internal successors, (187), 167 states have internal predecessors, (187), 60 states have call successors, (60), 29 states have call predecessors, (60), 31 states have return successors, (62), 59 states have call predecessors, (62), 58 states have call successors, (62) [2024-11-28 03:37:20,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 309 transitions. [2024-11-28 03:37:20,471 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 309 transitions. Word has length 140 [2024-11-28 03:37:20,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:20,471 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 309 transitions. [2024-11-28 03:37:20,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 10 states have internal predecessors, (80), 5 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2024-11-28 03:37:20,472 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 309 transitions. [2024-11-28 03:37:20,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 03:37:20,474 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:20,474 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:20,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:37:20,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:20,675 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:20,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:20,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1905134860, now seen corresponding path program 1 times [2024-11-28 03:37:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:20,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137384395] [2024-11-28 03:37:20,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:20,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:26,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 03:37:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:27,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137384395] [2024-11-28 03:37:27,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137384395] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:27,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452078103] [2024-11-28 03:37:27,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:27,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:27,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:27,388 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:27,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:37:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:34,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 4486 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:37:34,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:34,641 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:37:34,641 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:37:34,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452078103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:34,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:37:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 03:37:34,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129575590] [2024-11-28 03:37:34,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:34,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:37:34,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:34,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:37:34,643 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:37:34,644 INFO L87 Difference]: Start difference. First operand 255 states and 309 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:37:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:37:35,603 INFO L93 Difference]: Finished difference Result 442 states and 539 transitions. [2024-11-28 03:37:35,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:37:35,604 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2024-11-28 03:37:35,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:37:35,607 INFO L225 Difference]: With dead ends: 442 [2024-11-28 03:37:35,608 INFO L226 Difference]: Without dead ends: 267 [2024-11-28 03:37:35,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:37:35,610 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 167 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:37:35,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 572 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:37:35,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-28 03:37:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 264. [2024-11-28 03:37:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 169 states have (on average 1.1479289940828403) internal successors, (194), 174 states have internal predecessors, (194), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (66), 61 states have call predecessors, (66), 60 states have call successors, (66) [2024-11-28 03:37:35,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 322 transitions. [2024-11-28 03:37:35,639 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 322 transitions. Word has length 140 [2024-11-28 03:37:35,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:37:35,640 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 322 transitions. [2024-11-28 03:37:35,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:37:35,640 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 322 transitions. [2024-11-28 03:37:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:37:35,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:37:35,642 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:37:35,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:37:35,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:35,843 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:37:35,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:37:35,843 INFO L85 PathProgramCache]: Analyzing trace with hash 209357336, now seen corresponding path program 1 times [2024-11-28 03:37:35,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:37:35,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588516464] [2024-11-28 03:37:35,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:35,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:37:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:45,335 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 03:37:45,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:37:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588516464] [2024-11-28 03:37:45,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588516464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:37:45,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324688759] [2024-11-28 03:37:45,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:37:45,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:37:45,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:37:45,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:37:45,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:37:52,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:37:52,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 4493 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 03:37:52,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:37:52,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:37:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:37:53,733 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:37:53,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324688759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:37:53,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:37:53,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 16 [2024-11-28 03:37:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444471756] [2024-11-28 03:37:53,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:37:53,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:37:53,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:37:53,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:37:53,735 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:37:53,736 INFO L87 Difference]: Start difference. First operand 264 states and 322 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-28 03:38:01,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:38:02,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:02,771 INFO L93 Difference]: Finished difference Result 442 states and 530 transitions. [2024-11-28 03:38:02,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:38:02,772 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) Word has length 141 [2024-11-28 03:38:02,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:02,775 INFO L225 Difference]: With dead ends: 442 [2024-11-28 03:38:02,775 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 03:38:02,776 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:38:02,777 INFO L435 NwaCegarLoop]: 231 mSDtfsCounter, 151 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:02,777 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 1664 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 499 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2024-11-28 03:38:02,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 03:38:02,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 294. [2024-11-28 03:38:02,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 192 states have (on average 1.15625) internal successors, (222), 197 states have internal predecessors, (222), 65 states have call successors, (65), 34 states have call predecessors, (65), 36 states have return successors, (67), 63 states have call predecessors, (67), 62 states have call successors, (67) [2024-11-28 03:38:02,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 354 transitions. [2024-11-28 03:38:02,816 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 354 transitions. Word has length 141 [2024-11-28 03:38:02,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:02,817 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 354 transitions. [2024-11-28 03:38:02,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (23), 3 states have call predecessors, (23), 5 states have return successors, (22), 5 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-28 03:38:02,818 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 354 transitions. [2024-11-28 03:38:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2024-11-28 03:38:02,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:02,821 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:02,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:38:03,022 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:38:03,022 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:03,023 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:03,023 INFO L85 PathProgramCache]: Analyzing trace with hash -283268838, now seen corresponding path program 1 times [2024-11-28 03:38:03,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:03,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073521731] [2024-11-28 03:38:03,023 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:03,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:09,133 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2024-11-28 03:38:09,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:09,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073521731] [2024-11-28 03:38:09,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073521731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:09,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775791354] [2024-11-28 03:38:09,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:09,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:09,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:09,136 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:38:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:16,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 4488 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:38:16,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:38:17,234 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:17,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775791354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:17,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:17,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 03:38:17,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767145150] [2024-11-28 03:38:17,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:17,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:38:17,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:17,236 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:38:17,237 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:38:17,237 INFO L87 Difference]: Start difference. First operand 294 states and 354 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:38:18,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:18,152 INFO L93 Difference]: Finished difference Result 433 states and 519 transitions. [2024-11-28 03:38:18,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:38:18,153 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 141 [2024-11-28 03:38:18,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:18,156 INFO L225 Difference]: With dead ends: 433 [2024-11-28 03:38:18,157 INFO L226 Difference]: Without dead ends: 280 [2024-11-28 03:38:18,158 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:38:18,159 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 171 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:18,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 425 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:38:18,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-28 03:38:18,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2024-11-28 03:38:18,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.1373626373626373) internal successors, (207), 185 states have internal predecessors, (207), 63 states have call successors, (63), 34 states have call predecessors, (63), 34 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2024-11-28 03:38:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 332 transitions. [2024-11-28 03:38:18,212 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 332 transitions. Word has length 141 [2024-11-28 03:38:18,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:18,212 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 332 transitions. [2024-11-28 03:38:18,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 3 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-28 03:38:18,213 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 332 transitions. [2024-11-28 03:38:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-28 03:38:18,220 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:18,220 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:18,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:38:18,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:38:18,421 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:18,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash 720704093, now seen corresponding path program 1 times [2024-11-28 03:38:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:18,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722183326] [2024-11-28 03:38:18,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:18,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:26,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2024-11-28 03:38:26,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722183326] [2024-11-28 03:38:26,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722183326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:38:26,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513360916] [2024-11-28 03:38:26,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:26,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:38:26,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:38:26,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:38:26,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:38:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:34,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 4515 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 03:38:34,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:38:39,080 WARN L873 $PredicateComparison]: unable to prove that (or (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#5.offset| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0))) (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$#5.base| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0)))) is different from true [2024-11-28 03:38:47,657 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 03:38:47,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:38:47,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513360916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:47,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:38:47,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-28 03:38:47,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052836276] [2024-11-28 03:38:47,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:47,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:38:47,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:47,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:38:47,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 03:38:47,660 INFO L87 Difference]: Start difference. First operand 280 states and 332 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 03:38:48,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:38:48,512 INFO L93 Difference]: Finished difference Result 496 states and 592 transitions. [2024-11-28 03:38:48,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:38:48,513 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 146 [2024-11-28 03:38:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:38:48,516 INFO L225 Difference]: With dead ends: 496 [2024-11-28 03:38:48,517 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 03:38:48,518 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-11-28 03:38:48,518 INFO L435 NwaCegarLoop]: 161 mSDtfsCounter, 3 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 172 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:38:48,519 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 909 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 172 Unchecked, 0.8s Time] [2024-11-28 03:38:48,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 03:38:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 280. [2024-11-28 03:38:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.120879120879121) internal successors, (204), 185 states have internal predecessors, (204), 63 states have call successors, (63), 34 states have call predecessors, (63), 34 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2024-11-28 03:38:48,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 329 transitions. [2024-11-28 03:38:48,546 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 329 transitions. Word has length 146 [2024-11-28 03:38:48,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:38:48,547 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 329 transitions. [2024-11-28 03:38:48,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2024-11-28 03:38:48,547 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 329 transitions. [2024-11-28 03:38:48,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-28 03:38:48,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:38:48,550 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:38:48,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:38:48,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 03:38:48,751 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:38:48,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:38:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1107038935, now seen corresponding path program 1 times [2024-11-28 03:38:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:38:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042294788] [2024-11-28 03:38:48,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:38:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:38:53,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:38:59,127 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 03:38:59,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:38:59,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042294788] [2024-11-28 03:38:59,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042294788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:38:59,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:38:59,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 03:38:59,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313618498] [2024-11-28 03:38:59,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:38:59,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:38:59,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:38:59,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:38:59,130 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:38:59,130 INFO L87 Difference]: Start difference. First operand 280 states and 329 transitions. Second operand has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-28 03:39:01,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:01,643 INFO L93 Difference]: Finished difference Result 297 states and 347 transitions. [2024-11-28 03:39:01,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:39:01,644 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 153 [2024-11-28 03:39:01,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:01,647 INFO L225 Difference]: With dead ends: 297 [2024-11-28 03:39:01,647 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 03:39:01,648 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:39:01,649 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 10 mSDsluCounter, 1272 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:01,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 1435 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:39:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 03:39:01,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 280. [2024-11-28 03:39:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 182 states have (on average 1.1153846153846154) internal successors, (203), 185 states have internal predecessors, (203), 63 states have call successors, (63), 34 states have call predecessors, (63), 34 states have return successors, (62), 61 states have call predecessors, (62), 60 states have call successors, (62) [2024-11-28 03:39:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 328 transitions. [2024-11-28 03:39:01,679 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 328 transitions. Word has length 153 [2024-11-28 03:39:01,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:01,680 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 328 transitions. [2024-11-28 03:39:01,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.230769230769231) internal successors, (68), 12 states have internal predecessors, (68), 6 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2024-11-28 03:39:01,681 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 328 transitions. [2024-11-28 03:39:01,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-28 03:39:01,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:01,683 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:01,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 03:39:01,684 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:01,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:01,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1177093399, now seen corresponding path program 1 times [2024-11-28 03:39:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:01,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357424852] [2024-11-28 03:39:01,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:01,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:12,741 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 03:39:12,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:12,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357424852] [2024-11-28 03:39:12,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357424852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:12,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:39:12,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:39:12,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004783556] [2024-11-28 03:39:12,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:12,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:39:12,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:12,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:39:12,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:39:12,744 INFO L87 Difference]: Start difference. First operand 280 states and 328 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-28 03:39:15,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:15,678 INFO L93 Difference]: Finished difference Result 297 states and 346 transitions. [2024-11-28 03:39:15,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:39:15,679 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 154 [2024-11-28 03:39:15,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:15,681 INFO L225 Difference]: With dead ends: 297 [2024-11-28 03:39:15,681 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 03:39:15,682 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:39:15,682 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 26 mSDsluCounter, 1578 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:15,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 1747 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 03:39:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 03:39:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-28 03:39:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 184 states have (on average 1.1141304347826086) internal successors, (205), 188 states have internal predecessors, (205), 63 states have call successors, (63), 34 states have call predecessors, (63), 35 states have return successors, (63), 61 states have call predecessors, (63), 60 states have call successors, (63) [2024-11-28 03:39:15,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 331 transitions. [2024-11-28 03:39:15,710 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 331 transitions. Word has length 154 [2024-11-28 03:39:15,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:15,711 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 331 transitions. [2024-11-28 03:39:15,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 13 states have internal predecessors, (69), 7 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2024-11-28 03:39:15,711 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 331 transitions. [2024-11-28 03:39:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 03:39:15,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:15,714 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:15,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 03:39:15,714 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:15,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:15,715 INFO L85 PathProgramCache]: Analyzing trace with hash 55313866, now seen corresponding path program 1 times [2024-11-28 03:39:15,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:15,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402351061] [2024-11-28 03:39:15,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:15,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2024-11-28 03:39:24,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402351061] [2024-11-28 03:39:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402351061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:24,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427339029] [2024-11-28 03:39:24,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:24,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:24,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:24,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:24,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:39:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:31,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 4603 conjuncts, 129 conjuncts are in the unsatisfiable core [2024-11-28 03:39:31,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:31,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 10 treesize of output 8 [2024-11-28 03:39:33,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:39:33,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2024-11-28 03:39:33,171 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:39:45,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 73 [2024-11-28 03:39:45,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-28 03:39:45,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 56 treesize of output 49 [2024-11-28 03:39:45,964 INFO L349 Elim1Store]: treesize reduction 65, result has 21.7 percent of original size [2024-11-28 03:39:45,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 66 [2024-11-28 03:39:46,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 19 [2024-11-28 03:39:46,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 22 treesize of output 19 [2024-11-28 03:39:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 99 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:39:55,852 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:40:01,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427339029] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:01,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:40:01,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 34] total 39 [2024-11-28 03:40:01,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115714253] [2024-11-28 03:40:01,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:40:01,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 03:40:01,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:01,047 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 03:40:01,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1895, Unknown=13, NotChecked=0, Total=2070 [2024-11-28 03:40:01,049 INFO L87 Difference]: Start difference. First operand 283 states and 331 transitions. Second operand has 39 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 15 states have call successors, (44), 5 states have call predecessors, (44), 15 states have return successors, (43), 14 states have call predecessors, (43), 15 states have call successors, (43) [2024-11-28 03:40:39,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:39,599 INFO L93 Difference]: Finished difference Result 656 states and 757 transitions. [2024-11-28 03:40:39,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 03:40:39,600 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 15 states have call successors, (44), 5 states have call predecessors, (44), 15 states have return successors, (43), 14 states have call predecessors, (43), 15 states have call successors, (43) Word has length 166 [2024-11-28 03:40:39,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:39,603 INFO L225 Difference]: With dead ends: 656 [2024-11-28 03:40:39,603 INFO L226 Difference]: Without dead ends: 370 [2024-11-28 03:40:39,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 139 SyntacticMatches, 5 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=413, Invalid=5559, Unknown=34, NotChecked=0, Total=6006 [2024-11-28 03:40:39,608 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 173 mSDsluCounter, 5180 mSDsCounter, 0 mSdLazyCounter, 2487 mSolverCounterSat, 38 mSolverCounterUnsat, 178 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 5442 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 2487 IncrementalHoareTripleChecker+Invalid, 178 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:39,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 5442 Invalid, 2703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 2487 Invalid, 178 Unknown, 0 Unchecked, 25.5s Time] [2024-11-28 03:40:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-28 03:40:39,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 360. [2024-11-28 03:40:39,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 240 states have (on average 1.1125) internal successors, (267), 244 states have internal predecessors, (267), 72 states have call successors, (72), 44 states have call predecessors, (72), 47 states have return successors, (73), 72 states have call predecessors, (73), 69 states have call successors, (73) [2024-11-28 03:40:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 412 transitions. [2024-11-28 03:40:39,661 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 412 transitions. Word has length 166 [2024-11-28 03:40:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:39,661 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 412 transitions. [2024-11-28 03:40:39,662 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 15 states have call successors, (44), 5 states have call predecessors, (44), 15 states have return successors, (43), 14 states have call predecessors, (43), 15 states have call successors, (43) [2024-11-28 03:40:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 412 transitions. [2024-11-28 03:40:39,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-28 03:40:39,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:39,664 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 03:40:39,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:40:39,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 03:40:39,865 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:39,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash -28168777, now seen corresponding path program 1 times [2024-11-28 03:40:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039427525] [2024-11-28 03:40:39,866 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 03:40:47,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039427525] [2024-11-28 03:40:47,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039427525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:47,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237958233] [2024-11-28 03:40:47,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:47,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:47,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:47,962 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:47,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:40:57,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:57,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-28 03:40:57,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:58,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:40:59,037 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 39 treesize of output 1 [2024-11-28 03:40:59,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:41:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:41:02,864 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:41:07,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237958233] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:07,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:41:07,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 17] total 21 [2024-11-28 03:41:07,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197848686] [2024-11-28 03:41:07,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:41:07,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:41:07,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:07,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:41:07,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=533, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:41:07,370 INFO L87 Difference]: Start difference. First operand 360 states and 412 transitions. Second operand has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 19 states have internal predecessors, (137), 8 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-28 03:41:22,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:22,458 INFO L93 Difference]: Finished difference Result 682 states and 783 transitions. [2024-11-28 03:41:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:41:22,459 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 19 states have internal predecessors, (137), 8 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 169 [2024-11-28 03:41:22,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:22,462 INFO L225 Difference]: With dead ends: 682 [2024-11-28 03:41:22,463 INFO L226 Difference]: Without dead ends: 384 [2024-11-28 03:41:22,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:41:22,465 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 140 mSDsluCounter, 2321 mSDsCounter, 0 mSdLazyCounter, 1366 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 2528 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:22,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 2528 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1366 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2024-11-28 03:41:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-28 03:41:22,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 367. [2024-11-28 03:41:22,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 244 states have (on average 1.1024590163934427) internal successors, (269), 250 states have internal predecessors, (269), 72 states have call successors, (72), 44 states have call predecessors, (72), 50 states have return successors, (76), 73 states have call predecessors, (76), 69 states have call successors, (76) [2024-11-28 03:41:22,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 417 transitions. [2024-11-28 03:41:22,531 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 417 transitions. Word has length 169 [2024-11-28 03:41:22,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:22,532 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 417 transitions. [2024-11-28 03:41:22,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 7.611111111111111) internal successors, (137), 19 states have internal predecessors, (137), 8 states have call successors, (43), 3 states have call predecessors, (43), 9 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-28 03:41:22,533 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 417 transitions. [2024-11-28 03:41:22,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2024-11-28 03:41:22,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:22,535 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:22,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:41:22,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:22,736 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:22,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:22,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1874635733, now seen corresponding path program 1 times [2024-11-28 03:41:22,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:22,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597084803] [2024-11-28 03:41:22,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:22,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 18 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-28 03:41:37,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597084803] [2024-11-28 03:41:37,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597084803] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:37,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2027174976] [2024-11-28 03:41:37,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:37,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:37,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:37,713 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:37,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:41:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:47,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 4702 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 03:41:47,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:54,413 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 48 treesize of output 36 [2024-11-28 03:41:54,438 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 48 treesize of output 36 [2024-11-28 03:41:54,460 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 33 treesize of output 25 [2024-11-28 03:41:54,475 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 33 treesize of output 25 [2024-11-28 03:41:54,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 71 [2024-11-28 03:41:54,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 69 [2024-11-28 03:41:54,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 21 [2024-11-28 03:41:54,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2024-11-28 03:41:54,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 52 treesize of output 47 [2024-11-28 03:41:54,715 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 22 treesize of output 14 [2024-11-28 03:41:54,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2024-11-28 03:41:59,926 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 84 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-28 03:41:59,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:42:04,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2027174976] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:04,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:42:04,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 23] total 33 [2024-11-28 03:42:04,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049806142] [2024-11-28 03:42:04,225 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:42:04,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 03:42:04,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:42:04,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 03:42:04,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:42:04,227 INFO L87 Difference]: Start difference. First operand 367 states and 417 transitions. Second operand has 33 states, 27 states have (on average 5.481481481481482) internal successors, (148), 30 states have internal predecessors, (148), 13 states have call successors, (40), 3 states have call predecessors, (40), 11 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2024-11-28 03:42:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:42:26,342 INFO L93 Difference]: Finished difference Result 723 states and 814 transitions. [2024-11-28 03:42:26,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-28 03:42:26,343 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 27 states have (on average 5.481481481481482) internal successors, (148), 30 states have internal predecessors, (148), 13 states have call successors, (40), 3 states have call predecessors, (40), 11 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) Word has length 176 [2024-11-28 03:42:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:42:26,347 INFO L225 Difference]: With dead ends: 723 [2024-11-28 03:42:26,347 INFO L226 Difference]: Without dead ends: 426 [2024-11-28 03:42:26,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 159 SyntacticMatches, 7 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=284, Invalid=3748, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:42:26,350 INFO L435 NwaCegarLoop]: 182 mSDtfsCounter, 51 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 1804 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:42:26,351 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 4939 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1804 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2024-11-28 03:42:26,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2024-11-28 03:42:26,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 408. [2024-11-28 03:42:26,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 272 states have (on average 1.099264705882353) internal successors, (299), 278 states have internal predecessors, (299), 80 states have call successors, (80), 49 states have call predecessors, (80), 55 states have return successors, (84), 81 states have call predecessors, (84), 76 states have call successors, (84) [2024-11-28 03:42:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 463 transitions. [2024-11-28 03:42:26,426 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 463 transitions. Word has length 176 [2024-11-28 03:42:26,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:42:26,426 INFO L471 AbstractCegarLoop]: Abstraction has 408 states and 463 transitions. [2024-11-28 03:42:26,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 27 states have (on average 5.481481481481482) internal successors, (148), 30 states have internal predecessors, (148), 13 states have call successors, (40), 3 states have call predecessors, (40), 11 states have return successors, (40), 13 states have call predecessors, (40), 13 states have call successors, (40) [2024-11-28 03:42:26,427 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 463 transitions. [2024-11-28 03:42:26,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-28 03:42:26,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:42:26,429 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:42:26,462 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:42:26,629 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:42:26,630 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:42:26,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:42:26,630 INFO L85 PathProgramCache]: Analyzing trace with hash -917277145, now seen corresponding path program 1 times [2024-11-28 03:42:26,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:42:26,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913498898] [2024-11-28 03:42:26,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:26,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:42:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 18 proven. 18 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-28 03:42:42,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:42:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913498898] [2024-11-28 03:42:42,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913498898] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:42:42,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646323890] [2024-11-28 03:42:42,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:42:42,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:42:42,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:42:42,181 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:42:42,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:42:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:42:52,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 4704 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 03:42:52,370 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:42:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2024-11-28 03:42:56,873 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:05,068 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 03:43:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646323890] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:05,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:43:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 17] total 37 [2024-11-28 03:43:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901904016] [2024-11-28 03:43:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:43:05,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:43:05,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:43:05,070 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:43:05,070 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1237, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 03:43:05,071 INFO L87 Difference]: Start difference. First operand 408 states and 463 transitions. Second operand has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 03:43:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:43:06,626 INFO L93 Difference]: Finished difference Result 426 states and 481 transitions. [2024-11-28 03:43:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:43:06,627 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 177 [2024-11-28 03:43:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:43:06,631 INFO L225 Difference]: With dead ends: 426 [2024-11-28 03:43:06,631 INFO L226 Difference]: Without dead ends: 424 [2024-11-28 03:43:06,632 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 330 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=99, Invalid=1307, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:43:06,636 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 3 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:43:06,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1807 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:43:06,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2024-11-28 03:43:06,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 423. [2024-11-28 03:43:06,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 282 states have (on average 1.0957446808510638) internal successors, (309), 289 states have internal predecessors, (309), 81 states have call successors, (81), 50 states have call predecessors, (81), 59 states have return successors, (88), 84 states have call predecessors, (88), 77 states have call successors, (88) [2024-11-28 03:43:06,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 478 transitions. [2024-11-28 03:43:06,714 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 478 transitions. Word has length 177 [2024-11-28 03:43:06,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:43:06,715 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 478 transitions. [2024-11-28 03:43:06,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 7.7272727272727275) internal successors, (85), 9 states have internal predecessors, (85), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2024-11-28 03:43:06,716 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 478 transitions. [2024-11-28 03:43:06,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-28 03:43:06,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:43:06,719 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:43:06,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:43:06,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:43:06,920 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:43:06,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:43:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1438918352, now seen corresponding path program 1 times [2024-11-28 03:43:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:43:06,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519073574] [2024-11-28 03:43:06,922 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:06,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:43:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2024-11-28 03:43:15,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:43:15,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519073574] [2024-11-28 03:43:15,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519073574] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:43:15,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502925504] [2024-11-28 03:43:15,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:43:15,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:43:15,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:43:15,377 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:43:15,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:43:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:43:40,597 INFO L256 TraceCheckSpWp]: Trace formula consists of 4706 conjuncts, 169 conjuncts are in the unsatisfiable core [2024-11-28 03:43:40,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:43:42,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:43:42,335 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 27 treesize of output 1 [2024-11-28 03:43:42,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:43:50,655 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 113 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 03:43:50,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:43:51,780 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 12 treesize of output 8 [2024-11-28 03:44:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2024-11-28 03:44:02,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502925504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:02,806 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:44:02,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 31, 16] total 47 [2024-11-28 03:44:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151537664] [2024-11-28 03:44:02,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:02,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-28 03:44:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:44:02,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-28 03:44:02,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=2019, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:44:02,809 INFO L87 Difference]: Start difference. First operand 423 states and 478 transitions. Second operand has 47 states, 39 states have (on average 4.461538461538462) internal successors, (174), 36 states have internal predecessors, (174), 14 states have call successors, (53), 5 states have call predecessors, (53), 15 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-28 03:44:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:31,283 INFO L93 Difference]: Finished difference Result 831 states and 935 transitions. [2024-11-28 03:44:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-28 03:44:31,284 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 39 states have (on average 4.461538461538462) internal successors, (174), 36 states have internal predecessors, (174), 14 states have call successors, (53), 5 states have call predecessors, (53), 15 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) Word has length 178 [2024-11-28 03:44:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:31,287 INFO L225 Difference]: With dead ends: 831 [2024-11-28 03:44:31,287 INFO L226 Difference]: Without dead ends: 478 [2024-11-28 03:44:31,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 315 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 19.2s TimeCoverageRelationStatistics Valid=258, Invalid=4164, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 03:44:31,290 INFO L435 NwaCegarLoop]: 191 mSDtfsCounter, 117 mSDsluCounter, 5838 mSDsCounter, 0 mSdLazyCounter, 2957 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 6029 SdHoareTripleChecker+Invalid, 3003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 2957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:31,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 6029 Invalid, 3003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 2957 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2024-11-28 03:44:31,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2024-11-28 03:44:31,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 422. [2024-11-28 03:44:31,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 281 states have (on average 1.0818505338078293) internal successors, (304), 288 states have internal predecessors, (304), 81 states have call successors, (81), 50 states have call predecessors, (81), 59 states have return successors, (89), 84 states have call predecessors, (89), 77 states have call successors, (89) [2024-11-28 03:44:31,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 474 transitions. [2024-11-28 03:44:31,372 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 474 transitions. Word has length 178 [2024-11-28 03:44:31,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:31,372 INFO L471 AbstractCegarLoop]: Abstraction has 422 states and 474 transitions. [2024-11-28 03:44:31,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 39 states have (on average 4.461538461538462) internal successors, (174), 36 states have internal predecessors, (174), 14 states have call successors, (53), 5 states have call predecessors, (53), 15 states have return successors, (54), 13 states have call predecessors, (54), 14 states have call successors, (54) [2024-11-28 03:44:31,373 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 474 transitions. [2024-11-28 03:44:31,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-28 03:44:31,375 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:31,375 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:31,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:44:31,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:44:31,576 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:44:31,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:31,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1281796685, now seen corresponding path program 1 times [2024-11-28 03:44:31,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:44:31,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417271629] [2024-11-28 03:44:31,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:31,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:44:38,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-28 03:44:45,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:44:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417271629] [2024-11-28 03:44:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417271629] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:44:45,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794333875] [2024-11-28 03:44:45,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:45,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:45,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:45,361 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:45,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:44:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:54,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 4799 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-28 03:44:54,888 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:56,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:44:56,558 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 39 treesize of output 1 [2024-11-28 03:44:56,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:45:00,690 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 23 treesize of output 19 [2024-11-28 03:45:00,711 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 19 treesize of output 15 [2024-11-28 03:45:01,158 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 111 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 03:45:01,158 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:12,368 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 18 proven. 20 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2024-11-28 03:45:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794333875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:12,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:12,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 20, 16] total 40 [2024-11-28 03:45:12,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496809177] [2024-11-28 03:45:12,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:12,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 03:45:12,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:12,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 03:45:12,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1449, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 03:45:12,372 INFO L87 Difference]: Start difference. First operand 422 states and 474 transitions. Second operand has 40 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 11 states have call successors, (48), 3 states have call predecessors, (48), 12 states have return successors, (50), 13 states have call predecessors, (50), 11 states have call successors, (50) [2024-11-28 03:45:20,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:20,841 INFO L93 Difference]: Finished difference Result 647 states and 723 transitions. [2024-11-28 03:45:20,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:45:20,842 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 11 states have call successors, (48), 3 states have call predecessors, (48), 12 states have return successors, (50), 13 states have call predecessors, (50), 11 states have call successors, (50) Word has length 185 [2024-11-28 03:45:20,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:20,847 INFO L225 Difference]: With dead ends: 647 [2024-11-28 03:45:20,847 INFO L226 Difference]: Without dead ends: 456 [2024-11-28 03:45:20,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 341 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=153, Invalid=2009, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:45:20,849 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 15 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:20,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3180 Invalid, 913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-28 03:45:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-28 03:45:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 411. [2024-11-28 03:45:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 273 states have (on average 1.0805860805860805) internal successors, (295), 279 states have internal predecessors, (295), 81 states have call successors, (81), 50 states have call predecessors, (81), 56 states have return successors, (85), 82 states have call predecessors, (85), 77 states have call successors, (85) [2024-11-28 03:45:20,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 461 transitions. [2024-11-28 03:45:20,932 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 461 transitions. Word has length 185 [2024-11-28 03:45:20,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:20,932 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 461 transitions. [2024-11-28 03:45:20,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 33 states have (on average 4.96969696969697) internal successors, (164), 30 states have internal predecessors, (164), 11 states have call successors, (48), 3 states have call predecessors, (48), 12 states have return successors, (50), 13 states have call predecessors, (50), 11 states have call successors, (50) [2024-11-28 03:45:20,933 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 461 transitions. [2024-11-28 03:45:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-28 03:45:20,935 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:20,935 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:20,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:45:21,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:45:21,136 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:21,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:21,136 INFO L85 PathProgramCache]: Analyzing trace with hash -981136150, now seen corresponding path program 1 times [2024-11-28 03:45:21,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:21,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170828775] [2024-11-28 03:45:21,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:21,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:28,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 03:45:35,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170828775] [2024-11-28 03:45:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170828775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:35,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:45:35,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:45:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898637654] [2024-11-28 03:45:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:35,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:35,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:35,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:35,710 INFO L87 Difference]: Start difference. First operand 411 states and 461 transitions. Second operand has 14 states, 12 states have (on average 7.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:45:37,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:37,600 INFO L93 Difference]: Finished difference Result 466 states and 518 transitions. [2024-11-28 03:45:37,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:45:37,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 187 [2024-11-28 03:45:37,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:37,606 INFO L225 Difference]: With dead ends: 466 [2024-11-28 03:45:37,606 INFO L226 Difference]: Without dead ends: 464 [2024-11-28 03:45:37,607 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:45:37,607 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 8 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:37,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1908 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:45:37,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2024-11-28 03:45:37,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 428. [2024-11-28 03:45:37,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 285 states have (on average 1.0771929824561404) internal successors, (307), 292 states have internal predecessors, (307), 82 states have call successors, (82), 51 states have call predecessors, (82), 60 states have return successors, (90), 85 states have call predecessors, (90), 78 states have call successors, (90) [2024-11-28 03:45:37,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 479 transitions. [2024-11-28 03:45:37,693 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 479 transitions. Word has length 187 [2024-11-28 03:45:37,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:37,693 INFO L471 AbstractCegarLoop]: Abstraction has 428 states and 479 transitions. [2024-11-28 03:45:37,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.0) internal successors, (84), 10 states have internal predecessors, (84), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:45:37,694 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 479 transitions. [2024-11-28 03:45:37,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-28 03:45:37,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:37,696 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:37,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-28 03:45:37,696 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:37,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1876316328, now seen corresponding path program 1 times [2024-11-28 03:45:37,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:37,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143341350] [2024-11-28 03:45:37,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:37,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:45:45,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:52,673 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2024-11-28 03:45:52,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:45:52,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143341350] [2024-11-28 03:45:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143341350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:52,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:45:52,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 03:45:52,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198679322] [2024-11-28 03:45:52,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:52,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:45:52,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:45:52,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:45:52,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:45:52,675 INFO L87 Difference]: Start difference. First operand 428 states and 479 transitions. Second operand has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:45:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:54,646 INFO L93 Difference]: Finished difference Result 471 states and 523 transitions. [2024-11-28 03:45:54,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 03:45:54,647 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 186 [2024-11-28 03:45:54,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:54,650 INFO L225 Difference]: With dead ends: 471 [2024-11-28 03:45:54,650 INFO L226 Difference]: Without dead ends: 469 [2024-11-28 03:45:54,651 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:45:54,651 INFO L435 NwaCegarLoop]: 157 mSDtfsCounter, 8 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:54,652 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1845 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:45:54,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-28 03:45:54,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 449. [2024-11-28 03:45:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 299 states have (on average 1.0735785953177257) internal successors, (321), 307 states have internal predecessors, (321), 84 states have call successors, (84), 53 states have call predecessors, (84), 65 states have return successors, (95), 89 states have call predecessors, (95), 80 states have call successors, (95) [2024-11-28 03:45:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 500 transitions. [2024-11-28 03:45:54,747 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 500 transitions. Word has length 186 [2024-11-28 03:45:54,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:54,749 INFO L471 AbstractCegarLoop]: Abstraction has 449 states and 500 transitions. [2024-11-28 03:45:54,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 6.916666666666667) internal successors, (83), 10 states have internal predecessors, (83), 3 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:45:54,750 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 500 transitions. [2024-11-28 03:45:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2024-11-28 03:45:54,752 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:54,753 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:54,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:45:54,753 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:45:54,753 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:54,754 INFO L85 PathProgramCache]: Analyzing trace with hash 2126514247, now seen corresponding path program 2 times [2024-11-28 03:45:54,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:45:54,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465241756] [2024-11-28 03:45:54,754 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:54,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:09,254 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:46:09,254 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:21,010 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 03:46:21,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:21,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465241756] [2024-11-28 03:46:21,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465241756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:21,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:21,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 03:46:21,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278902820] [2024-11-28 03:46:21,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:21,012 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:46:21,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:21,012 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:46:21,012 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:46:21,013 INFO L87 Difference]: Start difference. First operand 449 states and 500 transitions. Second operand has 18 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 03:46:24,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:24,599 INFO L93 Difference]: Finished difference Result 639 states and 713 transitions. [2024-11-28 03:46:24,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:46:24,600 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) Word has length 189 [2024-11-28 03:46:24,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:24,603 INFO L225 Difference]: With dead ends: 639 [2024-11-28 03:46:24,603 INFO L226 Difference]: Without dead ends: 487 [2024-11-28 03:46:24,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:46:24,604 INFO L435 NwaCegarLoop]: 152 mSDtfsCounter, 23 mSDsluCounter, 1940 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:24,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2092 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:46:24,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2024-11-28 03:46:24,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 460. [2024-11-28 03:46:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 307 states have (on average 1.0716612377850163) internal successors, (329), 315 states have internal predecessors, (329), 85 states have call successors, (85), 53 states have call predecessors, (85), 67 states have return successors, (98), 92 states have call predecessors, (98), 81 states have call successors, (98) [2024-11-28 03:46:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 512 transitions. [2024-11-28 03:46:24,674 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 512 transitions. Word has length 189 [2024-11-28 03:46:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:24,675 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 512 transitions. [2024-11-28 03:46:24,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.25) internal successors, (84), 16 states have internal predecessors, (84), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 03:46:24,675 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 512 transitions. [2024-11-28 03:46:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-28 03:46:24,677 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:24,677 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:24,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 03:46:24,678 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:24,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2047932213, now seen corresponding path program 2 times [2024-11-28 03:46:24,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:24,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418670557] [2024-11-28 03:46:24,679 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:46:24,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:36,348 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:46:36,348 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:46:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 03:46:47,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:47,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418670557] [2024-11-28 03:46:47,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418670557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:47,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:47,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 03:46:47,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935236785] [2024-11-28 03:46:47,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:47,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 03:46:47,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:47,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 03:46:47,833 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:46:47,833 INFO L87 Difference]: Start difference. First operand 460 states and 512 transitions. Second operand has 18 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 03:46:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:51,386 INFO L93 Difference]: Finished difference Result 845 states and 935 transitions. [2024-11-28 03:46:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:46:51,387 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) Word has length 188 [2024-11-28 03:46:51,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:51,390 INFO L225 Difference]: With dead ends: 845 [2024-11-28 03:46:51,390 INFO L226 Difference]: Without dead ends: 484 [2024-11-28 03:46:51,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:46:51,392 INFO L435 NwaCegarLoop]: 151 mSDtfsCounter, 26 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:51,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2076 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 03:46:51,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-28 03:46:51,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 471. [2024-11-28 03:46:51,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 315 states have (on average 1.0698412698412698) internal successors, (337), 323 states have internal predecessors, (337), 86 states have call successors, (86), 53 states have call predecessors, (86), 69 states have return successors, (102), 95 states have call predecessors, (102), 82 states have call successors, (102) [2024-11-28 03:46:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 525 transitions. [2024-11-28 03:46:51,497 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 525 transitions. Word has length 188 [2024-11-28 03:46:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:51,498 INFO L471 AbstractCegarLoop]: Abstraction has 471 states and 525 transitions. [2024-11-28 03:46:51,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.1875) internal successors, (83), 16 states have internal predecessors, (83), 9 states have call successors, (26), 2 states have call predecessors, (26), 7 states have return successors, (25), 9 states have call predecessors, (25), 9 states have call successors, (25) [2024-11-28 03:46:51,498 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 525 transitions. [2024-11-28 03:46:51,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 03:46:51,501 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:51,501 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:51,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-28 03:46:51,501 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:51,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 429960980, now seen corresponding path program 1 times [2024-11-28 03:46:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337286922] [2024-11-28 03:46:51,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:51,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:46:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:58,915 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-28 03:46:58,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:46:58,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337286922] [2024-11-28 03:46:58,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337286922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:46:58,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:46:58,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:46:58,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690607331] [2024-11-28 03:46:58,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:46:58,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:46:58,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:46:58,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:46:58,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:46:58,917 INFO L87 Difference]: Start difference. First operand 471 states and 525 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:46:59,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:59,160 INFO L93 Difference]: Finished difference Result 876 states and 979 transitions. [2024-11-28 03:46:59,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:46:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 195 [2024-11-28 03:46:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:59,165 INFO L225 Difference]: With dead ends: 876 [2024-11-28 03:46:59,165 INFO L226 Difference]: Without dead ends: 443 [2024-11-28 03:46:59,167 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:46:59,169 INFO L435 NwaCegarLoop]: 164 mSDtfsCounter, 0 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:59,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 971 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:46:59,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-28 03:46:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 443. [2024-11-28 03:46:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 296 states have (on average 1.0574324324324325) internal successors, (313), 304 states have internal predecessors, (313), 81 states have call successors, (81), 53 states have call predecessors, (81), 65 states have return successors, (92), 86 states have call predecessors, (92), 77 states have call successors, (92) [2024-11-28 03:46:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 486 transitions. [2024-11-28 03:46:59,267 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 486 transitions. Word has length 195 [2024-11-28 03:46:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:59,268 INFO L471 AbstractCegarLoop]: Abstraction has 443 states and 486 transitions. [2024-11-28 03:46:59,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (24), 2 states have call predecessors, (24), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:46:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 486 transitions. [2024-11-28 03:46:59,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 03:46:59,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:59,271 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:46:59,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 03:46:59,271 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:46:59,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 661285663, now seen corresponding path program 1 times [2024-11-28 03:46:59,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:46:59,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532459318] [2024-11-28 03:46:59,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:47:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 03:47:46,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:47:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532459318] [2024-11-28 03:47:46,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532459318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:46,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060711393] [2024-11-28 03:47:46,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:46,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:46,893 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:46,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:47:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:59,489 INFO L256 TraceCheckSpWp]: Trace formula consists of 4846 conjuncts, 98 conjuncts are in the unsatisfiable core [2024-11-28 03:47:59,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:48:02,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 1 [2024-11-28 03:48:02,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:48:02,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 03:48:10,530 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 123 proven. 6 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 03:48:10,530 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:10,992 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 12 treesize of output 8 [2024-11-28 03:48:16,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060711393] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:16,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:48:16,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 18] total 50 [2024-11-28 03:48:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669629979] [2024-11-28 03:48:16,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:16,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 03:48:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:48:16,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 03:48:16,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2715, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:48:16,632 INFO L87 Difference]: Start difference. First operand 443 states and 486 transitions. Second operand has 50 states, 42 states have (on average 4.357142857142857) internal successors, (183), 40 states have internal predecessors, (183), 17 states have call successors, (46), 4 states have call predecessors, (46), 16 states have return successors, (47), 18 states have call predecessors, (47), 16 states have call successors, (47) [2024-11-28 03:49:02,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 03:49:10,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:49:10,565 INFO L93 Difference]: Finished difference Result 1069 states and 1175 transitions. [2024-11-28 03:49:10,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2024-11-28 03:49:10,567 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 4.357142857142857) internal successors, (183), 40 states have internal predecessors, (183), 17 states have call successors, (46), 4 states have call predecessors, (46), 16 states have return successors, (47), 18 states have call predecessors, (47), 16 states have call successors, (47) Word has length 195 [2024-11-28 03:49:10,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:49:10,572 INFO L225 Difference]: With dead ends: 1069 [2024-11-28 03:49:10,572 INFO L226 Difference]: Without dead ends: 710 [2024-11-28 03:49:10,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1740 ImplicationChecksByTransitivity, 38.4s TimeCoverageRelationStatistics Valid=444, Invalid=8112, Unknown=0, NotChecked=0, Total=8556 [2024-11-28 03:49:10,578 INFO L435 NwaCegarLoop]: 236 mSDtfsCounter, 112 mSDsluCounter, 7979 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 8215 SdHoareTripleChecker+Invalid, 3934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:49:10,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 8215 Invalid, 3934 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 3921 Invalid, 1 Unknown, 0 Unchecked, 36.7s Time] [2024-11-28 03:49:10,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-28 03:49:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 556. [2024-11-28 03:49:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 368 states have (on average 1.048913043478261) internal successors, (386), 378 states have internal predecessors, (386), 107 states have call successors, (107), 64 states have call predecessors, (107), 80 states have return successors, (122), 114 states have call predecessors, (122), 103 states have call successors, (122) [2024-11-28 03:49:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 615 transitions. [2024-11-28 03:49:10,728 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 615 transitions. Word has length 195 [2024-11-28 03:49:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:49:10,728 INFO L471 AbstractCegarLoop]: Abstraction has 556 states and 615 transitions. [2024-11-28 03:49:10,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 4.357142857142857) internal successors, (183), 40 states have internal predecessors, (183), 17 states have call successors, (46), 4 states have call predecessors, (46), 16 states have return successors, (47), 18 states have call predecessors, (47), 16 states have call successors, (47) [2024-11-28 03:49:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 615 transitions. [2024-11-28 03:49:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 03:49:10,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:49:10,732 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:49:10,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:49:10,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_573abd3f-d908-4bf6-977e-6c061e3a0149/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:49:10,933 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:49:10,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:49:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1184056222, now seen corresponding path program 1 times [2024-11-28 03:49:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:49:10,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46449877] [2024-11-28 03:49:10,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:49:10,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms