./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1 --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 74836a87661fce5875ab1ae94a73cbe51ee04e76d05fc1828decf2341972d635 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:46:05,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:46:05,128 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 14:46:05,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:46:05,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:46:05,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:46:05,153 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:46:05,153 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:46:05,153 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:46:05,153 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:46:05,153 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:46:05,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:46:05,154 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:46:05,154 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:46:05,154 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:46:05,155 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:46:05,155 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:46:05,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:46:05,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:46:05,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:46:05,156 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1 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 -> 74836a87661fce5875ab1ae94a73cbe51ee04e76d05fc1828decf2341972d635 [2024-12-02 14:46:05,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:46:05,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:46:05,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:46:05,399 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:46:05,399 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:46:05,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2024-12-02 14:46:07,999 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/data/91d36c567/753e4e864e6f4b7ab43a0cffd5b18a1c/FLAG9e51b8978 [2024-12-02 14:46:08,439 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:46:08,439 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2024-12-02 14:46:08,468 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/data/91d36c567/753e4e864e6f4b7ab43a0cffd5b18a1c/FLAG9e51b8978 [2024-12-02 14:46:08,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/data/91d36c567/753e4e864e6f4b7ab43a0cffd5b18a1c [2024-12-02 14:46:08,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:46:08,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:46:08,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:46:08,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:46:08,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:46:08,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:46:08" (1/1) ... [2024-12-02 14:46:08,594 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5422c9c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:08, skipping insertion in model container [2024-12-02 14:46:08,594 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:46:08" (1/1) ... [2024-12-02 14:46:08,666 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:46:08,886 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2024-12-02 14:46:08,893 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2024-12-02 14:46:09,849 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,850 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,850 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,851 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,852 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,868 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,868 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,870 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,871 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,873 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,874 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,874 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:09,875 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,773 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,773 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,795 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,796 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,802 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,802 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,815 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,816 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,817 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,817 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,817 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,818 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,818 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,851 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[229089,229102] [2024-12-02 14:46:10,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:46:10,879 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:46:10,892 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2024-12-02 14:46:10,892 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2024-12-02 14:46:10,929 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,929 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,929 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,930 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,930 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,936 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,937 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,937 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,938 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,939 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,939 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,939 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:10,940 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,035 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2024-12-02 14:46:11,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,113 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,114 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,117 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,117 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,125 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,126 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,126 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,127 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 14:46:11,151 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_02978e6c-6a30-4b70-a0c4-bf085bee0b66/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[229089,229102] [2024-12-02 14:46:11,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:46:11,358 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:46:11,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11 WrapperNode [2024-12-02 14:46:11,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:46:11,359 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:46:11,359 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:46:11,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:46:11,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,430 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,503 INFO L138 Inliner]: procedures = 764, calls = 2484, calls flagged for inlining = 68, calls inlined = 21, statements flattened = 1370 [2024-12-02 14:46:11,503 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:46:11,504 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:46:11,504 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:46:11,504 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:46:11,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,527 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,536 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-12-02 14:46:11,537 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,578 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,583 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,607 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:46:11,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:46:11,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:46:11,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:46:11,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (1/1) ... [2024-12-02 14:46:11,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:46:11,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:46:11,676 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:46:11,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:46:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2024-12-02 14:46:11,702 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2024-12-02 14:46:11,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-12-02 14:46:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 14:46:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 14:46:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 14:46:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 14:46:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-12-02 14:46:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2024-12-02 14:46:11,703 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2024-12-02 14:46:11,703 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-12-02 14:46:11,704 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-12-02 14:46:11,704 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-12-02 14:46:11,705 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-12-02 14:46:11,705 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2024-12-02 14:46:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2024-12-02 14:46:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2024-12-02 14:46:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2024-12-02 14:46:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-12-02 14:46:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-12-02 14:46:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-12-02 14:46:11,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-12-02 14:46:11,706 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-12-02 14:46:12,020 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:46:12,022 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:46:12,305 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 14:46:12,319 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-12-02 14:46:12,320 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-12-02 14:46:12,335 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 14:46:12,355 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-12-02 14:46:12,355 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-12-02 14:46:12,770 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 14:46:12,772 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 14:46:12,938 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume false; [2024-12-02 14:46:12,938 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !false; [2024-12-02 14:46:12,938 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !false; [2024-12-02 14:46:12,938 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume false; [2024-12-02 14:46:18,630 INFO L? ?]: Removed 393 outVars from TransFormulas that were not future-live. [2024-12-02 14:46:18,630 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:46:18,647 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:46:18,647 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-12-02 14:46:18,647 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:46:18 BoogieIcfgContainer [2024-12-02 14:46:18,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:46:18,650 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:46:18,650 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:46:18,654 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:46:18,654 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:46:08" (1/3) ... [2024-12-02 14:46:18,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b033c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:46:18, skipping insertion in model container [2024-12-02 14:46:18,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:46:11" (2/3) ... [2024-12-02 14:46:18,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b033c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:46:18, skipping insertion in model container [2024-12-02 14:46:18,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:46:18" (3/3) ... [2024-12-02 14:46:18,656 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness.i [2024-12-02 14:46:18,670 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:46:18,671 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_create_harness.i that has 31 procedures, 400 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-12-02 14:46:18,728 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:46:18,739 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;@25112ca2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:46:18,739 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:46:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 400 states, 286 states have (on average 1.3041958041958042) internal successors, (373), 283 states have internal predecessors, (373), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-12-02 14:46:18,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:46:18,752 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:18,753 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:18,753 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:18,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1395973969, now seen corresponding path program 1 times [2024-12-02 14:46:18,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:18,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186368789] [2024-12-02 14:46:18,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:18,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:24,781 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-12-02 14:46:24,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:24,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186368789] [2024-12-02 14:46:24,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186368789] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:46:24,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49815240] [2024-12-02 14:46:24,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:24,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:46:24,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:46:24,784 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:46:24,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:46:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:30,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 4407 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 14:46:30,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:46:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-12-02 14:46:30,398 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:46:30,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49815240] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:30,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:46:30,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 14:46:30,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881631321] [2024-12-02 14:46:30,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:30,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:46:30,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:30,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:46:30,418 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:46:30,420 INFO L87 Difference]: Start difference. First operand has 400 states, 286 states have (on average 1.3041958041958042) internal successors, (373), 283 states have internal predecessors, (373), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:46:30,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:30,475 INFO L93 Difference]: Finished difference Result 794 states and 1142 transitions. [2024-12-02 14:46:30,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:46:30,477 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2024-12-02 14:46:30,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:30,485 INFO L225 Difference]: With dead ends: 794 [2024-12-02 14:46:30,485 INFO L226 Difference]: Without dead ends: 392 [2024-12-02 14:46:30,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:46:30,492 INFO L435 NwaCegarLoop]: 533 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, 533 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 [2024-12-02 14:46:30,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:46:30,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-12-02 14:46:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-12-02 14:46:30,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 275 states have (on average 1.2872727272727273) internal successors, (354), 277 states have internal predecessors, (354), 86 states have call successors, (86), 30 states have call predecessors, (86), 30 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84) [2024-12-02 14:46:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 524 transitions. [2024-12-02 14:46:30,551 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 524 transitions. Word has length 124 [2024-12-02 14:46:30,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:30,552 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 524 transitions. [2024-12-02 14:46:30,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:46:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 524 transitions. [2024-12-02 14:46:30,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-12-02 14:46:30,555 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:30,555 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:30,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:46:30,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 14:46:30,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:30,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:30,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2034095755, now seen corresponding path program 1 times [2024-12-02 14:46:30,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:30,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382898448] [2024-12-02 14:46:30,757 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:30,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 14:46:36,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382898448] [2024-12-02 14:46:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382898448] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:36,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:36,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:46:36,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032758510] [2024-12-02 14:46:36,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:36,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:46:36,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:36,652 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:46:36,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:46:36,653 INFO L87 Difference]: Start difference. First operand 392 states and 524 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:46:36,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:36,804 INFO L93 Difference]: Finished difference Result 780 states and 1047 transitions. [2024-12-02 14:46:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:46:36,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 124 [2024-12-02 14:46:36,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:36,810 INFO L225 Difference]: With dead ends: 780 [2024-12-02 14:46:36,810 INFO L226 Difference]: Without dead ends: 397 [2024-12-02 14:46:36,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:46:36,812 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2080 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 [2024-12-02 14:46:36,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2080 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:46:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-12-02 14:46:36,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-12-02 14:46:36,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 279 states have (on average 1.2831541218637992) internal successors, (358), 281 states have internal predecessors, (358), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2024-12-02 14:46:36,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 532 transitions. [2024-12-02 14:46:36,839 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 532 transitions. Word has length 124 [2024-12-02 14:46:36,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:36,839 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 532 transitions. [2024-12-02 14:46:36,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-12-02 14:46:36,840 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 532 transitions. [2024-12-02 14:46:36,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 14:46:36,842 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:36,842 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:36,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:46:36,842 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:36,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:36,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1564860968, now seen corresponding path program 1 times [2024-12-02 14:46:36,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:36,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772901802] [2024-12-02 14:46:36,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:36,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:41,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 14:46:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:42,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772901802] [2024-12-02 14:46:42,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772901802] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:42,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:46:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974457735] [2024-12-02 14:46:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:42,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:46:42,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:42,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:46:42,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:46:42,364 INFO L87 Difference]: Start difference. First operand 397 states and 532 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:46:42,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:46:42,588 INFO L93 Difference]: Finished difference Result 780 states and 1045 transitions. [2024-12-02 14:46:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:46:42,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 130 [2024-12-02 14:46:42,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:46:42,592 INFO L225 Difference]: With dead ends: 780 [2024-12-02 14:46:42,592 INFO L226 Difference]: Without dead ends: 397 [2024-12-02 14:46:42,594 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:46:42,595 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 23 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:46:42,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1505 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:46:42,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-12-02 14:46:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-12-02 14:46:42,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 279 states have (on average 1.2795698924731183) internal successors, (357), 281 states have internal predecessors, (357), 86 states have call successors, (86), 30 states have call predecessors, (86), 31 states have return successors, (88), 85 states have call predecessors, (88), 84 states have call successors, (88) [2024-12-02 14:46:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 531 transitions. [2024-12-02 14:46:42,614 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 531 transitions. Word has length 130 [2024-12-02 14:46:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:46:42,614 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 531 transitions. [2024-12-02 14:46:42,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-12-02 14:46:42,615 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 531 transitions. [2024-12-02 14:46:42,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-12-02 14:46:42,617 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:46:42,617 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:46:42,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:46:42,617 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:46:42,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:46:42,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1147464362, now seen corresponding path program 1 times [2024-12-02 14:46:42,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:46:42,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394981935] [2024-12-02 14:46:42,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:46:42,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:46:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:46:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-12-02 14:46:50,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:46:50,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394981935] [2024-12-02 14:46:50,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394981935] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:46:50,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:46:50,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:46:50,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940918876] [2024-12-02 14:46:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:46:50,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:46:50,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:46:50,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:46:50,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:46:50,115 INFO L87 Difference]: Start difference. First operand 397 states and 531 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 14:46:54,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:46:58,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:47:02,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:47:07,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:47:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:47:10,922 INFO L93 Difference]: Finished difference Result 776 states and 1037 transitions. [2024-12-02 14:47:10,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:47:10,926 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 130 [2024-12-02 14:47:10,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:47:10,928 INFO L225 Difference]: With dead ends: 776 [2024-12-02 14:47:10,928 INFO L226 Difference]: Without dead ends: 400 [2024-12-02 14:47:10,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:47:10,929 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 5 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:47:10,929 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3420 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 4 Unknown, 0 Unchecked, 20.4s Time] [2024-12-02 14:47:10,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-12-02 14:47:10,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-12-02 14:47:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 281 states have (on average 1.2775800711743772) internal successors, (359), 284 states have internal predecessors, (359), 86 states have call successors, (86), 30 states have call predecessors, (86), 32 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2024-12-02 14:47:10,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 534 transitions. [2024-12-02 14:47:10,948 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 534 transitions. Word has length 130 [2024-12-02 14:47:10,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:47:10,948 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 534 transitions. [2024-12-02 14:47:10,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 9 states have internal predecessors, (61), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2024-12-02 14:47:10,949 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 534 transitions. [2024-12-02 14:47:10,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-12-02 14:47:10,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:47:10,951 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:47:10,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:47:10,951 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:47:10,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:47:10,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1708166692, now seen corresponding path program 1 times [2024-12-02 14:47:10,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:47:10,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270139159] [2024-12-02 14:47:10,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:10,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:17,444 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 14:47:17,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:17,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270139159] [2024-12-02 14:47:17,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270139159] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:17,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083016123] [2024-12-02 14:47:17,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:17,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:17,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:17,446 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:17,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:47:22,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:22,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 4440 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-12-02 14:47:22,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:47:28,400 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$.offset| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0))) (exists ((v_aws_hash_table_is_valid_~map.base_4 Int) (v_aws_hash_table_is_valid_~map.offset_4 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_hash_table_is_valid_~map.base_4) v_aws_hash_table_is_valid_~map.offset_4) 0)))) is different from true [2024-12-02 14:47:37,168 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 14:47:37,168 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:47:37,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083016123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:47:37,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:47:37,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 14:47:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133849056] [2024-12-02 14:47:37,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:47:37,169 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:47:37,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:47:37,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:47:37,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-12-02 14:47:37,170 INFO L87 Difference]: Start difference. First operand 400 states and 534 transitions. Second operand has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:47:41,260 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:47:45,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:47:49,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:47:54,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:47:58,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:48:04,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:48:08,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:08,623 INFO L93 Difference]: Finished difference Result 785 states and 1049 transitions. [2024-12-02 14:48:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:48:08,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 136 [2024-12-02 14:48:08,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:08,630 INFO L225 Difference]: With dead ends: 785 [2024-12-02 14:48:08,630 INFO L226 Difference]: Without dead ends: 404 [2024-12-02 14:48:08,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=28, Invalid=105, Unknown=3, NotChecked=20, Total=156 [2024-12-02 14:48:08,631 INFO L435 NwaCegarLoop]: 517 mSDtfsCounter, 3 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2833 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 534 IncrementalHoareTripleChecker+Unchecked, 31.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:08,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2833 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 299 Invalid, 6 Unknown, 534 Unchecked, 31.4s Time] [2024-12-02 14:48:08,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-12-02 14:48:08,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 402. [2024-12-02 14:48:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 283 states have (on average 1.2756183745583038) internal successors, (361), 285 states have internal predecessors, (361), 86 states have call successors, (86), 31 states have call predecessors, (86), 32 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2024-12-02 14:48:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 536 transitions. [2024-12-02 14:48:08,650 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 536 transitions. Word has length 136 [2024-12-02 14:48:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:08,651 INFO L471 AbstractCegarLoop]: Abstraction has 402 states and 536 transitions. [2024-12-02 14:48:08,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 3 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2024-12-02 14:48:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 536 transitions. [2024-12-02 14:48:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-12-02 14:48:08,653 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:08,653 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:08,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-12-02 14:48:08,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:48:08,854 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:08,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:08,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1807754501, now seen corresponding path program 1 times [2024-12-02 14:48:08,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:08,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87253574] [2024-12-02 14:48:08,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:08,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:13,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:16,014 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 14:48:16,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:16,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87253574] [2024-12-02 14:48:16,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87253574] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:16,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:16,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:48:16,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442674883] [2024-12-02 14:48:16,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:16,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:48:16,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:16,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:48:16,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:16,016 INFO L87 Difference]: Start difference. First operand 402 states and 536 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 14:48:16,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:16,456 INFO L93 Difference]: Finished difference Result 408 states and 541 transitions. [2024-12-02 14:48:16,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:48:16,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 143 [2024-12-02 14:48:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:16,460 INFO L225 Difference]: With dead ends: 408 [2024-12-02 14:48:16,460 INFO L226 Difference]: Without dead ends: 406 [2024-12-02 14:48:16,461 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:48:16,462 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 4 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:16,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2062 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 14:48:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-12-02 14:48:16,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2024-12-02 14:48:16,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 286 states have (on average 1.2727272727272727) internal successors, (364), 288 states have internal predecessors, (364), 86 states have call successors, (86), 32 states have call predecessors, (86), 33 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2024-12-02 14:48:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 539 transitions. [2024-12-02 14:48:16,475 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 539 transitions. Word has length 143 [2024-12-02 14:48:16,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:16,476 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 539 transitions. [2024-12-02 14:48:16,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2024-12-02 14:48:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 539 transitions. [2024-12-02 14:48:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:48:16,478 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:16,478 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:16,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:48:16,478 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:16,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -670871041, now seen corresponding path program 1 times [2024-12-02 14:48:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313167641] [2024-12-02 14:48:16,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:22,878 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 14:48:22,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:22,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313167641] [2024-12-02 14:48:22,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313167641] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:22,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:22,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:48:22,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236546406] [2024-12-02 14:48:22,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:22,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:48:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:22,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:48:22,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:22,880 INFO L87 Difference]: Start difference. First operand 406 states and 539 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-12-02 14:48:23,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:23,375 INFO L93 Difference]: Finished difference Result 414 states and 547 transitions. [2024-12-02 14:48:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:48:23,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2024-12-02 14:48:23,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:23,378 INFO L225 Difference]: With dead ends: 414 [2024-12-02 14:48:23,378 INFO L226 Difference]: Without dead ends: 412 [2024-12-02 14:48:23,379 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:48:23,379 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 3 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:23,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2067 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:48:23,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-12-02 14:48:23,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 411. [2024-12-02 14:48:23,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 289 states have (on average 1.2698961937716262) internal successors, (367), 292 states have internal predecessors, (367), 87 states have call successors, (87), 33 states have call predecessors, (87), 34 states have return successors, (90), 85 states have call predecessors, (90), 85 states have call successors, (90) [2024-12-02 14:48:23,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 544 transitions. [2024-12-02 14:48:23,393 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 544 transitions. Word has length 156 [2024-12-02 14:48:23,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:23,393 INFO L471 AbstractCegarLoop]: Abstraction has 411 states and 544 transitions. [2024-12-02 14:48:23,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-12-02 14:48:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 544 transitions. [2024-12-02 14:48:23,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-12-02 14:48:23,395 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:23,395 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:23,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:48:23,395 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:23,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash -669023999, now seen corresponding path program 1 times [2024-12-02 14:48:23,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:23,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163452470] [2024-12-02 14:48:23,396 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:23,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-12-02 14:48:29,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:29,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163452470] [2024-12-02 14:48:29,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163452470] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:29,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:29,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:48:29,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75350661] [2024-12-02 14:48:29,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:29,184 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:48:29,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:29,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:48:29,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:29,185 INFO L87 Difference]: Start difference. First operand 411 states and 544 transitions. Second operand has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-12-02 14:48:29,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:29,687 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2024-12-02 14:48:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:48:29,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 156 [2024-12-02 14:48:29,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:29,691 INFO L225 Difference]: With dead ends: 417 [2024-12-02 14:48:29,691 INFO L226 Difference]: Without dead ends: 415 [2024-12-02 14:48:29,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:48:29,692 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 3 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2066 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:29,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2066 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:48:29,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-12-02 14:48:29,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 410. [2024-12-02 14:48:29,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 289 states have (on average 1.2698961937716262) internal successors, (367), 291 states have internal predecessors, (367), 86 states have call successors, (86), 33 states have call predecessors, (86), 34 states have return successors, (89), 85 states have call predecessors, (89), 84 states have call successors, (89) [2024-12-02 14:48:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 542 transitions. [2024-12-02 14:48:29,711 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 542 transitions. Word has length 156 [2024-12-02 14:48:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:29,712 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 542 transitions. [2024-12-02 14:48:29,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-12-02 14:48:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 542 transitions. [2024-12-02 14:48:29,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-12-02 14:48:29,714 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:29,715 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:29,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:48:29,715 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:29,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:29,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1875367330, now seen corresponding path program 1 times [2024-12-02 14:48:29,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:29,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085201318] [2024-12-02 14:48:29,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:29,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:37,740 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-12-02 14:48:37,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:37,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085201318] [2024-12-02 14:48:37,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085201318] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:37,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:37,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-12-02 14:48:37,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667151863] [2024-12-02 14:48:37,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:37,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 14:48:37,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:37,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 14:48:37,742 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:48:37,742 INFO L87 Difference]: Start difference. First operand 410 states and 542 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 14:48:40,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:40,567 INFO L93 Difference]: Finished difference Result 832 states and 1115 transitions. [2024-12-02 14:48:40,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:48:40,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) Word has length 179 [2024-12-02 14:48:40,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:40,570 INFO L225 Difference]: With dead ends: 832 [2024-12-02 14:48:40,571 INFO L226 Difference]: Without dead ends: 500 [2024-12-02 14:48:40,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-12-02 14:48:40,572 INFO L435 NwaCegarLoop]: 565 mSDtfsCounter, 133 mSDsluCounter, 5579 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 6144 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:40,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 6144 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 14:48:40,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2024-12-02 14:48:40,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 466. [2024-12-02 14:48:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 333 states have (on average 1.2882882882882882) internal successors, (429), 336 states have internal predecessors, (429), 94 states have call successors, (94), 36 states have call predecessors, (94), 38 states have return successors, (98), 93 states have call predecessors, (98), 92 states have call successors, (98) [2024-12-02 14:48:40,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 621 transitions. [2024-12-02 14:48:40,592 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 621 transitions. Word has length 179 [2024-12-02 14:48:40,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:40,593 INFO L471 AbstractCegarLoop]: Abstraction has 466 states and 621 transitions. [2024-12-02 14:48:40,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 9 states have internal predecessors, (85), 6 states have call successors, (31), 5 states have call predecessors, (31), 2 states have return successors, (25), 4 states have call predecessors, (25), 3 states have call successors, (25) [2024-12-02 14:48:40,593 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 621 transitions. [2024-12-02 14:48:40,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-12-02 14:48:40,595 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:40,595 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:40,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:48:40,595 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:40,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:40,595 INFO L85 PathProgramCache]: Analyzing trace with hash -479474643, now seen corresponding path program 1 times [2024-12-02 14:48:40,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935436638] [2024-12-02 14:48:40,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-12-02 14:48:45,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:45,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935436638] [2024-12-02 14:48:45,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935436638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:45,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:45,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:48:45,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294796173] [2024-12-02 14:48:45,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:45,816 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:48:45,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:45,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:48:45,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:45,817 INFO L87 Difference]: Start difference. First operand 466 states and 621 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 14:48:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:45,985 INFO L93 Difference]: Finished difference Result 549 states and 719 transitions. [2024-12-02 14:48:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:48:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2024-12-02 14:48:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:45,989 INFO L225 Difference]: With dead ends: 549 [2024-12-02 14:48:45,989 INFO L226 Difference]: Without dead ends: 472 [2024-12-02 14:48:45,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:48:45,990 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:45,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2077 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:48:45,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2024-12-02 14:48:46,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2024-12-02 14:48:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 337 states have (on average 1.28486646884273) internal successors, (433), 341 states have internal predecessors, (433), 94 states have call successors, (94), 36 states have call predecessors, (94), 40 states have return successors, (100), 94 states have call predecessors, (100), 92 states have call successors, (100) [2024-12-02 14:48:46,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 627 transitions. [2024-12-02 14:48:46,011 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 627 transitions. Word has length 171 [2024-12-02 14:48:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:46,011 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 627 transitions. [2024-12-02 14:48:46,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 14:48:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 627 transitions. [2024-12-02 14:48:46,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-12-02 14:48:46,014 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:46,014 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:46,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:48:46,014 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:46,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1905320929, now seen corresponding path program 1 times [2024-12-02 14:48:46,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:46,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044417909] [2024-12-02 14:48:46,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:46,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:50,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:50,849 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-12-02 14:48:50,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:48:50,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044417909] [2024-12-02 14:48:50,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044417909] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:48:50,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:48:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:48:50,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986307802] [2024-12-02 14:48:50,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:48:50,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:48:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:50,851 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:48:50,851 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:48:50,851 INFO L87 Difference]: Start difference. First operand 472 states and 627 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 14:48:50,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:50,957 INFO L93 Difference]: Finished difference Result 756 states and 999 transitions. [2024-12-02 14:48:50,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:48:50,957 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 173 [2024-12-02 14:48:50,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:50,960 INFO L225 Difference]: With dead ends: 756 [2024-12-02 14:48:50,961 INFO L226 Difference]: Without dead ends: 474 [2024-12-02 14:48:50,962 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 [2024-12-02 14:48:50,962 INFO L435 NwaCegarLoop]: 522 mSDtfsCounter, 0 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:50,963 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:48:50,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-12-02 14:48:50,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2024-12-02 14:48:50,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 339 states have (on average 1.2831858407079646) internal successors, (435), 343 states have internal predecessors, (435), 94 states have call successors, (94), 36 states have call predecessors, (94), 40 states have return successors, (100), 94 states have call predecessors, (100), 92 states have call successors, (100) [2024-12-02 14:48:50,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 629 transitions. [2024-12-02 14:48:50,984 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 629 transitions. Word has length 173 [2024-12-02 14:48:50,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:50,984 INFO L471 AbstractCegarLoop]: Abstraction has 474 states and 629 transitions. [2024-12-02 14:48:50,985 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2024-12-02 14:48:50,985 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 629 transitions. [2024-12-02 14:48:50,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-12-02 14:48:50,986 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:50,987 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:50,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:48:50,987 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:50,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:50,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1524384807, now seen corresponding path program 1 times [2024-12-02 14:48:50,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:50,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429950415] [2024-12-02 14:48:50,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:48:50,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:48:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2024-12-02 14:49:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:49:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429950415] [2024-12-02 14:49:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429950415] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:49:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136009713] [2024-12-02 14:49:05,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:49:05,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:49:05,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:49:05,974 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:49:05,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:49:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:49:12,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 4669 conjuncts, 83 conjuncts are in the unsatisfiable core [2024-12-02 14:49:12,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:49:12,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 6 treesize of output 5 [2024-12-02 14:49:16,148 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-12-02 14:49:16,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-12-02 14:49:16,325 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 5 treesize of output 3 [2024-12-02 14:49:16,400 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 14 treesize of output 3 [2024-12-02 14:49:17,333 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-12-02 14:49:17,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 19 treesize of output 16 [2024-12-02 14:49:18,482 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 5 treesize of output 3 [2024-12-02 14:49:18,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 14:49:18,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-02 14:49:19,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-12-02 14:49:19,522 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 [2024-12-02 14:49:24,249 INFO L349 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2024-12-02 14:49:24,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 104 [2024-12-02 14:49:24,300 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 18 treesize of output 14 [2024-12-02 14:49:24,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 8 [2024-12-02 14:49:26,333 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-12-02 14:49:26,334 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 33 [2024-12-02 14:49:26,485 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-02 14:49:26,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-12-02 14:49:31,071 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_11| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_11| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_11|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_11|))) (and (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_11|) (not (= .cse0 0))))) is different from true [2024-12-02 14:49:35,932 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_12| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_12| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_12|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_12|))) (and (<= (+ 2 .cse0) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_12|) (not (= .cse0 0))))) is different from true [2024-12-02 14:49:40,751 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_13| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_13| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_13|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_13|))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_13|) (not (= .cse0 0))))) is different from true [2024-12-02 14:49:41,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2024-12-02 14:49:46,189 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_14| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_14| Int)) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_14|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_14|))) (and (<= (+ .cse0 2) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_14|) (not (= .cse0 0))))) is different from true [2024-12-02 14:49:47,472 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 25 treesize of output 13 [2024-12-02 14:49:47,729 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 68 proven. 49 refuted. 12 times theorem prover too weak. 20 trivial. 63 not checked. [2024-12-02 14:49:47,729 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:49:50,099 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_22548 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_hash_table_state_has_an_empty_slot_~rval#1.base| v_ArrVal_22548) |c_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base|) |c_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset|) 0))) is different from false [2024-12-02 14:49:50,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136009713] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:49:50,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:49:50,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25] total 32 [2024-12-02 14:49:50,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154565827] [2024-12-02 14:49:50,180 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:49:50,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-12-02 14:49:50,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:49:50,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-12-02 14:49:50,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=788, Unknown=5, NotChecked=300, Total=1190 [2024-12-02 14:49:50,182 INFO L87 Difference]: Start difference. First operand 474 states and 629 transitions. Second operand has 32 states, 30 states have (on average 4.766666666666667) internal successors, (143), 28 states have internal predecessors, (143), 18 states have call successors, (50), 11 states have call predecessors, (50), 13 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2024-12-02 14:49:54,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:49:58,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:50:02,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:07,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:11,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:16,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:20,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:24,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:50:29,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:33,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:37,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:42,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:46,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:50,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:55,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:50:59,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:51:03,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:51:08,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:51:12,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:51:16,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:52:32,287 WARN L539 Checker$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] [2024-12-02 14:52:40,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:52:50,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:53:02,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:53:24,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:53:31,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:53:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:53:41,807 INFO L93 Difference]: Finished difference Result 1046 states and 1363 transitions. [2024-12-02 14:53:41,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 14:53:41,808 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.766666666666667) internal successors, (143), 28 states have internal predecessors, (143), 18 states have call successors, (50), 11 states have call predecessors, (50), 13 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) Word has length 177 [2024-12-02 14:53:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:53:41,811 INFO L225 Difference]: With dead ends: 1046 [2024-12-02 14:53:41,811 INFO L226 Difference]: Without dead ends: 620 [2024-12-02 14:53:41,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 213 SyntacticMatches, 22 SemanticMatches, 59 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=325, Invalid=2770, Unknown=5, NotChecked=560, Total=3660 [2024-12-02 14:53:41,813 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 1062 mSDsluCounter, 3661 mSDsCounter, 0 mSdLazyCounter, 8044 mSolverCounterSat, 611 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3891 SdHoareTripleChecker+Invalid, 11502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 8044 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 2824 IncrementalHoareTripleChecker+Unchecked, 219.9s IncrementalHoareTripleChecker+Time [2024-12-02 14:53:41,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3891 Invalid, 11502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [611 Valid, 8044 Invalid, 23 Unknown, 2824 Unchecked, 219.9s Time] [2024-12-02 14:53:41,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-12-02 14:53:41,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 593. [2024-12-02 14:53:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 421 states have (on average 1.2565320665083135) internal successors, (529), 426 states have internal predecessors, (529), 111 states have call successors, (111), 56 states have call predecessors, (111), 60 states have return successors, (123), 110 states have call predecessors, (123), 109 states have call successors, (123) [2024-12-02 14:53:41,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 763 transitions. [2024-12-02 14:53:41,866 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 763 transitions. Word has length 177 [2024-12-02 14:53:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:53:41,867 INFO L471 AbstractCegarLoop]: Abstraction has 593 states and 763 transitions. [2024-12-02 14:53:41,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.766666666666667) internal successors, (143), 28 states have internal predecessors, (143), 18 states have call successors, (50), 11 states have call predecessors, (50), 13 states have return successors, (47), 18 states have call predecessors, (47), 18 states have call successors, (47) [2024-12-02 14:53:41,867 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 763 transitions. [2024-12-02 14:53:41,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-12-02 14:53:41,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:53:41,869 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:53:41,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:53:42,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 14:53:42,069 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:53:42,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:53:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1912638931, now seen corresponding path program 1 times [2024-12-02 14:53:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:53:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690615786] [2024-12-02 14:53:42,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:53:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:51,746 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-12-02 14:53:51,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:53:51,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690615786] [2024-12-02 14:53:51,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690615786] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:53:51,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006313266] [2024-12-02 14:53:51,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:53:51,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:53:51,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:53:51,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:53:51,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:53:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:53:58,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 4790 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:53:58,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:53:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2024-12-02 14:53:58,893 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:54:03,467 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-12-02 14:54:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006313266] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:54:03,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:54:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 6, 7] total 17 [2024-12-02 14:54:03,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963028190] [2024-12-02 14:54:03,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:54:03,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 14:54:03,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:03,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 14:54:03,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-12-02 14:54:03,470 INFO L87 Difference]: Start difference. First operand 593 states and 763 transitions. Second operand has 17 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 9 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2024-12-02 14:54:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:09,623 INFO L93 Difference]: Finished difference Result 1055 states and 1367 transitions. [2024-12-02 14:54:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:54:09,624 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 9 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) Word has length 197 [2024-12-02 14:54:09,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:09,627 INFO L225 Difference]: With dead ends: 1055 [2024-12-02 14:54:09,627 INFO L226 Difference]: Without dead ends: 606 [2024-12-02 14:54:09,628 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2024-12-02 14:54:09,628 INFO L435 NwaCegarLoop]: 498 mSDtfsCounter, 144 mSDsluCounter, 5286 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 5784 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:09,629 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 5784 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 14:54:09,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2024-12-02 14:54:09,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 589. [2024-12-02 14:54:09,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 418 states have (on average 1.255980861244019) internal successors, (525), 423 states have internal predecessors, (525), 111 states have call successors, (111), 55 states have call predecessors, (111), 59 states have return successors, (119), 110 states have call predecessors, (119), 109 states have call successors, (119) [2024-12-02 14:54:09,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 755 transitions. [2024-12-02 14:54:09,681 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 755 transitions. Word has length 197 [2024-12-02 14:54:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:09,682 INFO L471 AbstractCegarLoop]: Abstraction has 589 states and 755 transitions. [2024-12-02 14:54:09,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.1875) internal successors, (115), 15 states have internal predecessors, (115), 9 states have call successors, (38), 4 states have call predecessors, (38), 4 states have return successors, (33), 7 states have call predecessors, (33), 6 states have call successors, (33) [2024-12-02 14:54:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 755 transitions. [2024-12-02 14:54:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-12-02 14:54:09,684 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:09,684 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:09,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:54:09,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 14:54:09,884 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:09,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 633872195, now seen corresponding path program 1 times [2024-12-02 14:54:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178919451] [2024-12-02 14:54:09,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:09,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:14,953 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-12-02 14:54:14,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:14,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178919451] [2024-12-02 14:54:14,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178919451] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:54:14,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:54:14,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:54:14,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439217226] [2024-12-02 14:54:14,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:54:14,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:54:14,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:54:14,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:54:14,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:14,954 INFO L87 Difference]: Start difference. First operand 589 states and 755 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 14:54:15,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:54:15,199 INFO L93 Difference]: Finished difference Result 666 states and 847 transitions. [2024-12-02 14:54:15,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:54:15,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 188 [2024-12-02 14:54:15,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:54:15,202 INFO L225 Difference]: With dead ends: 666 [2024-12-02 14:54:15,202 INFO L226 Difference]: Without dead ends: 594 [2024-12-02 14:54:15,203 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:54:15,203 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 0 mSDsluCounter, 1556 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:54:15,203 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2076 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:54:15,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2024-12-02 14:54:15,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 594. [2024-12-02 14:54:15,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 422 states have (on average 1.2535545023696681) internal successors, (529), 427 states have internal predecessors, (529), 111 states have call successors, (111), 55 states have call predecessors, (111), 60 states have return successors, (121), 111 states have call predecessors, (121), 109 states have call successors, (121) [2024-12-02 14:54:15,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 761 transitions. [2024-12-02 14:54:15,232 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 761 transitions. Word has length 188 [2024-12-02 14:54:15,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:54:15,232 INFO L471 AbstractCegarLoop]: Abstraction has 594 states and 761 transitions. [2024-12-02 14:54:15,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2024-12-02 14:54:15,233 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 761 transitions. [2024-12-02 14:54:15,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-12-02 14:54:15,233 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:54:15,234 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:54:15,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:54:15,234 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:54:15,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:54:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1790754754, now seen corresponding path program 1 times [2024-12-02 14:54:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:54:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804228779] [2024-12-02 14:54:15,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:54:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 3 proven. 36 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-12-02 14:54:22,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:54:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804228779] [2024-12-02 14:54:22,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804228779] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:54:22,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306261790] [2024-12-02 14:54:22,966 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:54:22,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:54:22,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:54:22,968 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:54:22,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:54:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:54:29,461 INFO L256 TraceCheckSpWp]: Trace formula consists of 4765 conjuncts, 140 conjuncts are in the unsatisfiable core [2024-12-02 14:54:29,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:54:33,221 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 [2024-12-02 14:54:33,248 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 [2024-12-02 14:54:33,318 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-12-02 14:54:33,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 14:54:33,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 23 [2024-12-02 14:54:33,398 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 5 [2024-12-02 14:54:37,794 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_24| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_24| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_24|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_24|)) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_24|)) is different from true [2024-12-02 14:54:43,746 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_25| Int) (|v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_25| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_25|) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.offset_BEFORE_CALL_25|) 2) |v_ULTIMATE.start_aws_hash_table_create_harness_~#map~0#1.base_BEFORE_CALL_25|)) is different from true [2024-12-02 14:54:55,949 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:54:55,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2024-12-02 14:54:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 99 proven. 37 refuted. 15 times theorem prover too weak. 84 trivial. 34 not checked. [2024-12-02 14:54:56,584 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:55:17,691 INFO L349 Elim1Store]: treesize reduction 4, result has 93.8 percent of original size [2024-12-02 14:55:17,691 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 92 [2024-12-02 14:55:27,727 INFO L349 Elim1Store]: treesize reduction 4, result has 93.8 percent of original size [2024-12-02 14:55:27,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 92 [2024-12-02 14:55:32,762 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 45 proven. 23 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2024-12-02 14:55:32,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306261790] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:55:32,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:55:32,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 29, 21] total 49 [2024-12-02 14:55:32,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132629484] [2024-12-02 14:55:32,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:55:32,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-12-02 14:55:32,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:55:32,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-12-02 14:55:32,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=2040, Unknown=2, NotChecked=182, Total=2352 [2024-12-02 14:55:32,765 INFO L87 Difference]: Start difference. First operand 594 states and 761 transitions. Second operand has 49 states, 40 states have (on average 4.925) internal successors, (197), 40 states have internal predecessors, (197), 23 states have call successors, (74), 10 states have call predecessors, (74), 17 states have return successors, (67), 18 states have call predecessors, (67), 19 states have call successors, (67) [2024-12-02 14:55:36,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:55:41,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:55:45,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:55:49,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:55:53,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:55:58,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:02,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:07,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:56:11,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:15,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:19,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:24,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:28,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:32,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:37,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:41,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:45,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:56:50,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 14:56:54,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-12-02 14:56:58,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:03,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.30s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:57:07,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:11,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:16,197 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:20,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.25s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:24,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:29,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:57:33,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-12-02 14:57:46,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:57:57,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:01,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:06,768 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:15,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:19,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:25,772 WARN L539 Checker$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] [2024-12-02 14:58:30,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:58:34,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:59:19,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:59:38,816 WARN L539 Checker$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] [2024-12-02 15:00:04,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 15:00:06,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:00:06,260 INFO L93 Difference]: Finished difference Result 1598 states and 2096 transitions. [2024-12-02 15:00:06,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 15:00:06,261 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 40 states have (on average 4.925) internal successors, (197), 40 states have internal predecessors, (197), 23 states have call successors, (74), 10 states have call predecessors, (74), 17 states have return successors, (67), 18 states have call predecessors, (67), 19 states have call successors, (67) Word has length 198 [2024-12-02 15:00:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:00:06,266 INFO L225 Difference]: With dead ends: 1598 [2024-12-02 15:00:06,266 INFO L226 Difference]: Without dead ends: 995 [2024-12-02 15:00:06,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 350 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 47.8s TimeCoverageRelationStatistics Valid=271, Invalid=4025, Unknown=2, NotChecked=258, Total=4556 [2024-12-02 15:00:06,270 INFO L435 NwaCegarLoop]: 615 mSDtfsCounter, 361 mSDsluCounter, 18471 mSDsCounter, 0 mSdLazyCounter, 5637 mSolverCounterSat, 50 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 19086 SdHoareTripleChecker+Invalid, 7493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 5637 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 1766 IncrementalHoareTripleChecker+Unchecked, 261.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:00:06,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 19086 Invalid, 7493 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 5637 Invalid, 40 Unknown, 1766 Unchecked, 261.4s Time] [2024-12-02 15:00:06,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-12-02 15:00:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 925. [2024-12-02 15:00:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 657 states have (on average 1.2496194824961948) internal successors, (821), 667 states have internal predecessors, (821), 166 states have call successors, (166), 82 states have call predecessors, (166), 101 states have return successors, (207), 175 states have call predecessors, (207), 162 states have call successors, (207) [2024-12-02 15:00:06,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1194 transitions. [2024-12-02 15:00:06,366 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1194 transitions. Word has length 198 [2024-12-02 15:00:06,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:00:06,366 INFO L471 AbstractCegarLoop]: Abstraction has 925 states and 1194 transitions. [2024-12-02 15:00:06,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 40 states have (on average 4.925) internal successors, (197), 40 states have internal predecessors, (197), 23 states have call successors, (74), 10 states have call predecessors, (74), 17 states have return successors, (67), 18 states have call predecessors, (67), 19 states have call successors, (67) [2024-12-02 15:00:06,366 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1194 transitions. [2024-12-02 15:00:06,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2024-12-02 15:00:06,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:00:06,368 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:00:06,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 15:00:06,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 15:00:06,569 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:00:06,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:00:06,569 INFO L85 PathProgramCache]: Analyzing trace with hash -491728803, now seen corresponding path program 1 times [2024-12-02 15:00:06,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:00:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735646956] [2024-12-02 15:00:06,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:00:06,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:00:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:00:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-12-02 15:00:14,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:00:14,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735646956] [2024-12-02 15:00:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735646956] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:00:14,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144107029] [2024-12-02 15:00:14,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:00:14,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:00:14,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:00:14,502 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:00:14,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02978e6c-6a30-4b70-a0c4-bf085bee0b66/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:00:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:00:21,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 4777 conjuncts, 80 conjuncts are in the unsatisfiable core [2024-12-02 15:00:21,467 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:00:22,639 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 7 treesize of output 3 [2024-12-02 15:00:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 94 proven. 6 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-12-02 15:00:31,901 INFO L312 TraceCheckSpWp]: Computing backward predicates...