./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 83589103d63582ab3e264b6d8e730d62c6eb0b101bb611ea588c172c43990d87 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:06:41,341 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:06:41,471 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 05:06:41,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:06:41,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:06:41,520 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:06:41,521 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:06:41,521 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:06:41,522 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:06:41,522 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:06:41,523 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:06:41,523 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:06:41,523 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:06:41,523 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:06:41,524 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:06:41,524 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:06:41,524 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:06:41,524 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:06:41,525 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:06:41,526 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:06:41,526 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:41,526 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:41,526 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:41,526 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:41,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:06:41,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:41,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:41,527 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:41,527 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:41,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:06:41,528 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:06:41,529 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:06:41,529 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:06:41,529 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:06:41,529 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83589103d63582ab3e264b6d8e730d62c6eb0b101bb611ea588c172c43990d87 [2024-11-28 05:06:41,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:06:41,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:06:41,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:06:41,905 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:06:41,905 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:06:41,907 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2024-11-28 05:06:42,663 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0b64f1c74/03bd706b5fad48fd823171031a27781f/FLAGaf54ce0ed [2024-11-28 05:06:44,130 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:06:44,131 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i [2024-11-28 05:06:44,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0b64f1c74/03bd706b5fad48fd823171031a27781f/FLAGaf54ce0ed [2024-11-28 05:06:51,730 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/data/0b64f1c74/03bd706b5fad48fd823171031a27781f [2024-11-28 05:06:51,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:06:51,735 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:06:51,737 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:51,737 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:06:51,744 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:06:51,745 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:51" (1/1) ... [2024-11-28 05:06:51,746 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@392f7c44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:51, skipping insertion in model container [2024-11-28 05:06:51,747 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:51" (1/1) ... [2024-11-28 05:06:51,917 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:06:52,276 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2024-11-28 05:06:52,286 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2024-11-28 05:06:53,612 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,614 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,614 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,615 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,617 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,639 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,640 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,643 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,644 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,648 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,649 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,650 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:53,651 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,178 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,228 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,229 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,244 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,272 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,275 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,275 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,276 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,277 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,342 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[229394,229407] [2024-11-28 05:06:55,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:55,395 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:06:55,419 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4495,4508] [2024-11-28 05:06:55,420 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[4555,4568] [2024-11-28 05:06:55,483 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,484 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,484 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,484 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,485 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,494 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,495 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,496 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,497 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,498 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,498 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,498 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,669 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7544-7555] [2024-11-28 05:06:55,788 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,789 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,800 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,801 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,805 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,806 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,821 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,822 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,823 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,824 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,825 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,825 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,826 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 05:06:55,859 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_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness_negated.i[229394,229407] [2024-11-28 05:06:55,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:56,154 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:06:56,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56 WrapperNode [2024-11-28 05:06:56,156 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:56,157 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:56,157 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:06:56,157 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:06:56,165 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,438 INFO L138 Inliner]: procedures = 764, calls = 2484, calls flagged for inlining = 68, calls inlined = 21, statements flattened = 1370 [2024-11-28 05:06:56,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:56,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:06:56,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:06:56,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:06:56,457 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,457 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,486 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,507 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-28 05:06:56,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,611 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,640 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,666 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,683 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,709 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:06:56,710 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:06:56,711 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:06:56,711 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:06:56,712 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (1/1) ... [2024-11-28 05:06:56,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:56,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:56,755 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:06:56,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:06:56,793 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2024-11-28 05:06:56,794 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2024-11-28 05:06:56,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-28 05:06:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-11-28 05:06:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-11-28 05:06:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-28 05:06:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-28 05:06:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:06:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 05:06:56,795 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 05:06:56,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-28 05:06:56,796 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-28 05:06:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2024-11-28 05:06:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-28 05:06:56,796 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2024-11-28 05:06:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2024-11-28 05:06:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-28 05:06:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 05:06:56,797 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 05:06:56,797 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 05:06:56,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 05:06:56,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-28 05:06:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2024-11-28 05:06:56,799 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2024-11-28 05:06:56,799 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-28 05:06:56,800 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-28 05:06:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:06:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:06:56,801 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-28 05:06:56,801 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-28 05:06:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-28 05:06:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-28 05:06:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-28 05:06:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-11-28 05:06:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-11-28 05:06:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2024-11-28 05:06:56,802 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2024-11-28 05:06:56,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:06:56,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:06:56,803 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 05:06:56,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 05:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 05:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 05:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-28 05:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-11-28 05:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-11-28 05:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 05:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 05:06:56,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 05:06:56,805 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 05:06:56,806 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 05:06:56,806 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 05:06:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-28 05:06:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-11-28 05:06:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-11-28 05:06:56,807 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2024-11-28 05:06:56,807 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2024-11-28 05:06:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2024-11-28 05:06:56,809 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2024-11-28 05:06:56,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 05:06:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 05:06:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-28 05:06:56,810 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-28 05:06:56,810 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-28 05:06:57,475 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:06:57,479 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:06:58,113 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:06:58,132 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-11-28 05:06:58,133 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-11-28 05:06:58,165 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:06:58,211 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-28 05:06:58,211 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-28 05:06:58,873 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:06:58,875 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 05:06:59,226 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume false; [2024-11-28 05:06:59,226 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !false; [2024-11-28 05:06:59,227 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !false; [2024-11-28 05:06:59,227 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume false; [2024-11-28 05:07:05,807 INFO L? ?]: Removed 393 outVars from TransFormulas that were not future-live. [2024-11-28 05:07:05,808 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:07:05,846 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:07:05,846 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 05:07:05,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:05 BoogieIcfgContainer [2024-11-28 05:07:05,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:07:05,852 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:07:05,852 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:07:05,859 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:07:05,859 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:51" (1/3) ... [2024-11-28 05:07:05,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fda2d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:05, skipping insertion in model container [2024-11-28 05:07:05,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:56" (2/3) ... [2024-11-28 05:07:05,860 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fda2d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:07:05, skipping insertion in model container [2024-11-28 05:07:05,860 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:07:05" (3/3) ... [2024-11-28 05:07:05,865 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness_negated.i [2024-11-28 05:07:05,891 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:07:05,895 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_create_harness_negated.i that has 31 procedures, 400 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 05:07:05,974 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:07:05,989 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;@6a11d53b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:07:05,990 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 05:07:05,999 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) [2024-11-28 05:07:06,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:07:06,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:06,019 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] [2024-11-28 05:07:06,020 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:06,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:06,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1395973969, now seen corresponding path program 1 times [2024-11-28 05:07:06,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:06,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851060748] [2024-11-28 05:07:06,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:06,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-28 05:07:16,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:16,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851060748] [2024-11-28 05:07:16,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851060748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:16,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632347973] [2024-11-28 05:07:16,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:16,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:16,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:16,561 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:16,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:07:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:25,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 4407 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 05:07:25,176 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:25,201 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2024-11-28 05:07:25,201 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:07:25,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632347973] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:25,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:07:25,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 05:07:25,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627032733] [2024-11-28 05:07:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:25,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 05:07:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:25,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 05:07:25,234 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 05:07:25,238 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) [2024-11-28 05:07:25,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:25,329 INFO L93 Difference]: Finished difference Result 794 states and 1142 transitions. [2024-11-28 05:07:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 05:07:25,331 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 [2024-11-28 05:07:25,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:25,354 INFO L225 Difference]: With dead ends: 794 [2024-11-28 05:07:25,354 INFO L226 Difference]: Without dead ends: 392 [2024-11-28 05:07:25,364 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 [2024-11-28 05:07:25,367 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 [2024-11-28 05:07:25,370 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] [2024-11-28 05:07:25,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2024-11-28 05:07:25,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2024-11-28 05:07:25,480 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) [2024-11-28 05:07:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 524 transitions. [2024-11-28 05:07:25,500 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 524 transitions. Word has length 124 [2024-11-28 05:07:25,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:25,504 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 524 transitions. [2024-11-28 05:07:25,505 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) [2024-11-28 05:07:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 524 transitions. [2024-11-28 05:07:25,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 05:07:25,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:25,509 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] [2024-11-28 05:07:25,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:07:25,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:25,710 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:25,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:25,711 INFO L85 PathProgramCache]: Analyzing trace with hash -2034095755, now seen corresponding path program 1 times [2024-11-28 05:07:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:25,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594294506] [2024-11-28 05:07:25,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:25,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 05:07:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:33,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594294506] [2024-11-28 05:07:33,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594294506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:33,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:33,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:07:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428103483] [2024-11-28 05:07:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:33,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:07:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:33,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:07:33,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:33,881 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) [2024-11-28 05:07:34,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:34,158 INFO L93 Difference]: Finished difference Result 780 states and 1047 transitions. [2024-11-28 05:07:34,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:07:34,159 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 [2024-11-28 05:07:34,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:34,170 INFO L225 Difference]: With dead ends: 780 [2024-11-28 05:07:34,171 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 05:07:34,173 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 [2024-11-28 05:07:34,176 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 0 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:07:34,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2080 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 05:07:34,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 05:07:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-28 05:07:34,235 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) [2024-11-28 05:07:34,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 532 transitions. [2024-11-28 05:07:34,244 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 532 transitions. Word has length 124 [2024-11-28 05:07:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:34,244 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 532 transitions. [2024-11-28 05:07:34,245 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) [2024-11-28 05:07:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 532 transitions. [2024-11-28 05:07:34,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 05:07:34,248 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:34,248 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] [2024-11-28 05:07:34,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:07:34,248 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:34,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1564860968, now seen corresponding path program 1 times [2024-11-28 05:07:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:34,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811253828] [2024-11-28 05:07:34,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:34,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:40,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 05:07:42,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:42,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811253828] [2024-11-28 05:07:42,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811253828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:42,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:42,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:07:42,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790909397] [2024-11-28 05:07:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:42,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:07:42,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:42,545 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:07:42,546 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:42,546 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) [2024-11-28 05:07:42,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:07:42,845 INFO L93 Difference]: Finished difference Result 780 states and 1045 transitions. [2024-11-28 05:07:42,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:07:42,848 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 [2024-11-28 05:07:42,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:07:42,856 INFO L225 Difference]: With dead ends: 780 [2024-11-28 05:07:42,858 INFO L226 Difference]: Without dead ends: 397 [2024-11-28 05:07:42,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:07:42,863 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 [2024-11-28 05:07:42,864 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] [2024-11-28 05:07:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2024-11-28 05:07:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2024-11-28 05:07:42,902 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) [2024-11-28 05:07:42,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 531 transitions. [2024-11-28 05:07:42,911 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 531 transitions. Word has length 130 [2024-11-28 05:07:42,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:07:42,912 INFO L471 AbstractCegarLoop]: Abstraction has 397 states and 531 transitions. [2024-11-28 05:07:42,912 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) [2024-11-28 05:07:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 531 transitions. [2024-11-28 05:07:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-28 05:07:42,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:07:42,919 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] [2024-11-28 05:07:42,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:07:42,920 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:07:42,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1147464362, now seen corresponding path program 1 times [2024-11-28 05:07:42,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:42,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392139135] [2024-11-28 05:07:42,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:07:42,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:07:54,381 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2024-11-28 05:07:54,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:54,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392139135] [2024-11-28 05:07:54,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392139135] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:07:54,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:07:54,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:07:54,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131447666] [2024-11-28 05:07:54,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:07:54,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:07:54,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:54,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:07:54,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:07:54,385 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) [2024-11-28 05:07:58,484 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 [] [2024-11-28 05:08:02,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:08:07,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:08:11,633 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 [] [2024-11-28 05:08:16,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:16,239 INFO L93 Difference]: Finished difference Result 776 states and 1037 transitions. [2024-11-28 05:08:16,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:08:16,245 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 [2024-11-28 05:08:16,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:16,249 INFO L225 Difference]: With dead ends: 776 [2024-11-28 05:08:16,250 INFO L226 Difference]: Without dead ends: 400 [2024-11-28 05:08:16,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:08:16,253 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 5 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.7s 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, 21.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:16,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 3420 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 4 Unknown, 0 Unchecked, 21.3s Time] [2024-11-28 05:08:16,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2024-11-28 05:08:16,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2024-11-28 05:08:16,288 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) [2024-11-28 05:08:16,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 534 transitions. [2024-11-28 05:08:16,294 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 534 transitions. Word has length 130 [2024-11-28 05:08:16,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:16,295 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 534 transitions. [2024-11-28 05:08:16,295 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) [2024-11-28 05:08:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 534 transitions. [2024-11-28 05:08:16,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 05:08:16,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:16,300 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] [2024-11-28 05:08:16,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 05:08:16,300 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:16,301 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:16,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1708166692, now seen corresponding path program 1 times [2024-11-28 05:08:16,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:16,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350606636] [2024-11-28 05:08:16,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:16,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:26,315 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-11-28 05:08:26,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350606636] [2024-11-28 05:08:26,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350606636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:26,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201512793] [2024-11-28 05:08:26,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:26,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:26,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:26,324 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:26,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:08:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:34,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 4440 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 05:08:34,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:36,518 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 05:08:36,518 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:08:36,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201512793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:36,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 05:08:36,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-11-28 05:08:36,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527954071] [2024-11-28 05:08:36,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:36,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:08:36,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:36,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:08:36,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:08:36,521 INFO L87 Difference]: Start difference. First operand 400 states and 534 transitions. Second operand has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-28 05:08:39,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:39,476 INFO L93 Difference]: Finished difference Result 785 states and 1052 transitions. [2024-11-28 05:08:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:08:39,478 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 136 [2024-11-28 05:08:39,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:39,485 INFO L225 Difference]: With dead ends: 785 [2024-11-28 05:08:39,485 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 05:08:39,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:08:39,491 INFO L435 NwaCegarLoop]: 500 mSDtfsCounter, 0 mSDsluCounter, 3450 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3950 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:39,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3950 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 05:08:39,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 05:08:39,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 403. [2024-11-28 05:08:39,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 283 states have (on average 1.2756183745583038) internal successors, (361), 286 states have internal predecessors, (361), 86 states have call successors, (86), 30 states have call predecessors, (86), 33 states have return successors, (96), 86 states have call predecessors, (96), 84 states have call successors, (96) [2024-11-28 05:08:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 543 transitions. [2024-11-28 05:08:39,517 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 543 transitions. Word has length 136 [2024-11-28 05:08:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:39,518 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 543 transitions. [2024-11-28 05:08:39,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 3 states have call successors, (24), 2 states have call predecessors, (24), 5 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2024-11-28 05:08:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 543 transitions. [2024-11-28 05:08:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 05:08:39,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:39,520 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] [2024-11-28 05:08:39,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:08:39,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:39,721 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:39,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1807754501, now seen corresponding path program 1 times [2024-11-28 05:08:39,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:39,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922047920] [2024-11-28 05:08:39,722 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:39,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:50,021 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2024-11-28 05:08:50,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:50,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922047920] [2024-11-28 05:08:50,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922047920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:50,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:50,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:08:50,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608783324] [2024-11-28 05:08:50,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:50,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:08:50,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:50,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:08:50,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:08:50,025 INFO L87 Difference]: Start difference. First operand 403 states and 543 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 05:08:52,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:08:52,551 INFO L93 Difference]: Finished difference Result 763 states and 1028 transitions. [2024-11-28 05:08:52,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:08:52,552 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 143 [2024-11-28 05:08:52,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:08:52,558 INFO L225 Difference]: With dead ends: 763 [2024-11-28 05:08:52,558 INFO L226 Difference]: Without dead ends: 403 [2024-11-28 05:08:52,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:08:52,561 INFO L435 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 1962 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2464 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 05:08:52,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2464 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 05:08:52,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-28 05:08:52,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2024-11-28 05:08:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 283 states have (on average 1.2756183745583038) internal successors, (361), 286 states have internal predecessors, (361), 86 states have call successors, (86), 30 states have call predecessors, (86), 33 states have return successors, (95), 86 states have call predecessors, (95), 84 states have call successors, (95) [2024-11-28 05:08:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 542 transitions. [2024-11-28 05:08:52,617 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 542 transitions. Word has length 143 [2024-11-28 05:08:52,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:08:52,620 INFO L471 AbstractCegarLoop]: Abstraction has 403 states and 542 transitions. [2024-11-28 05:08:52,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2024-11-28 05:08:52,621 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 542 transitions. [2024-11-28 05:08:52,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 05:08:52,623 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:08:52,624 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 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] [2024-11-28 05:08:52,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:08:52,624 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:08:52,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1081716880, now seen corresponding path program 1 times [2024-11-28 05:08:52,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:52,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77263116] [2024-11-28 05:08:52,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:08:52,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:01,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-28 05:09:05,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77263116] [2024-11-28 05:09:05,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77263116] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:05,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486692160] [2024-11-28 05:09:05,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:05,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:05,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:05,329 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:05,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:09:13,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:13,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 4504 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-28 05:09:13,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:17,058 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 [2024-11-28 05:09:17,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:09:17,118 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 [2024-11-28 05:09:17,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:09:17,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:09:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 112 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-28 05:09:25,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:39,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486692160] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:39,599 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:09:39,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 20] total 24 [2024-11-28 05:09:39,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039619698] [2024-11-28 05:09:39,599 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:39,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:09:39,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:39,601 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:09:39,602 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1170, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:09:39,602 INFO L87 Difference]: Start difference. First operand 403 states and 542 transitions. Second operand has 24 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (41), 9 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-28 05:09:43,676 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 [0] [2024-11-28 05:09:48,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.49s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:09:52,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:09:57,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:10:01,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:05,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:10:10,260 WARN L539 Checker$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] [2024-11-28 05:10:14,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:10:19,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:23,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:27,875 WARN L539 Checker$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] [2024-11-28 05:10:32,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:51,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:58,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:00,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:00,220 INFO L93 Difference]: Finished difference Result 803 states and 1079 transitions. [2024-11-28 05:11:00,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:11:00,221 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (41), 9 states have call predecessors, (41), 9 states have call successors, (41) Word has length 150 [2024-11-28 05:11:00,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:00,225 INFO L225 Difference]: With dead ends: 803 [2024-11-28 05:11:00,225 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 05:11:00,229 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=104, Invalid=1378, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 05:11:00,230 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 4 mSDsluCounter, 9161 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 0 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 74.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9655 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:00,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9655 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1295 Invalid, 12 Unknown, 0 Unchecked, 79.2s Time] [2024-11-28 05:11:00,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 05:11:00,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 406. [2024-11-28 05:11:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 285 states have (on average 1.2736842105263158) internal successors, (363), 289 states have internal predecessors, (363), 86 states have call successors, (86), 30 states have call predecessors, (86), 34 states have return successors, (96), 86 states have call predecessors, (96), 84 states have call successors, (96) [2024-11-28 05:11:00,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 545 transitions. [2024-11-28 05:11:00,261 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 545 transitions. Word has length 150 [2024-11-28 05:11:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:00,262 INFO L471 AbstractCegarLoop]: Abstraction has 406 states and 545 transitions. [2024-11-28 05:11:00,262 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 5.428571428571429) internal successors, (114), 20 states have internal predecessors, (114), 9 states have call successors, (44), 3 states have call predecessors, (44), 10 states have return successors, (41), 9 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-28 05:11:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 545 transitions. [2024-11-28 05:11:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-28 05:11:00,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:00,265 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2024-11-28 05:11:00,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:00,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:00,466 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:11:00,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -406614091, now seen corresponding path program 1 times [2024-11-28 05:11:00,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:11:00,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541526177] [2024-11-28 05:11:00,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:00,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:11:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:11,704 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-28 05:11:11,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:11:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541526177] [2024-11-28 05:11:11,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541526177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:11,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858838716] [2024-11-28 05:11:11,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:11,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:11,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:11,709 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:11,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:11:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:19,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 4508 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 05:11:19,367 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:23,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:11:23,187 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 36 treesize of output 30 [2024-11-28 05:11:23,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:11:23,245 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 69 treesize of output 52 [2024-11-28 05:11:23,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:11:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 101 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 05:11:32,143 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:11:40,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858838716] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:11:40,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:11:40,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 18] total 22 [2024-11-28 05:11:40,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009698758] [2024-11-28 05:11:40,012 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 05:11:40,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 05:11:40,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:11:40,014 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 05:11:40,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:11:40,015 INFO L87 Difference]: Start difference. First operand 406 states and 545 transitions. Second operand has 22 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 8 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-28 05:11:44,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:11:48,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:11:53,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:57,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:01,889 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.44s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:06,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:10,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:15,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:19,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:24,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:12:28,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.46s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:32,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:37,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.45s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:12:43,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:48,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:12:52,206 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:07,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:12,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:16,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:21,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:26,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:30,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:34,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:39,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:43,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:47,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:51,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:55,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:00,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:05,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:09,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:14,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:18,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:22,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:27,096 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:31,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:35,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:39,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:44,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:49,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:53,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:58,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:03,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:07,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:12,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:15,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:15:21,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-28 05:15:21,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:21,368 INFO L93 Difference]: Finished difference Result 855 states and 1128 transitions. [2024-11-28 05:15:21,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 05:15:21,369 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 8 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) Word has length 152 [2024-11-28 05:15:21,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:21,373 INFO L225 Difference]: With dead ends: 855 [2024-11-28 05:15:21,373 INFO L226 Difference]: Without dead ends: 439 [2024-11-28 05:15:21,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=121, Invalid=1139, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 05:15:21,376 INFO L435 NwaCegarLoop]: 501 mSDtfsCounter, 30 mSDsluCounter, 6273 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 9 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 211.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 6774 SdHoareTripleChecker+Invalid, 1370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 217.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:21,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 6774 Invalid, 1370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1315 Invalid, 46 Unknown, 0 Unchecked, 217.3s Time] [2024-11-28 05:15:21,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-28 05:15:21,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 435. [2024-11-28 05:15:21,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 307 states have (on average 1.257328990228013) internal successors, (386), 312 states have internal predecessors, (386), 88 states have call successors, (88), 35 states have call predecessors, (88), 39 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2024-11-28 05:15:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 572 transitions. [2024-11-28 05:15:21,408 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 572 transitions. Word has length 152 [2024-11-28 05:15:21,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:21,409 INFO L471 AbstractCegarLoop]: Abstraction has 435 states and 572 transitions. [2024-11-28 05:15:21,409 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.8) internal successors, (116), 20 states have internal predecessors, (116), 8 states have call successors, (44), 3 states have call predecessors, (44), 9 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2024-11-28 05:15:21,410 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 572 transitions. [2024-11-28 05:15:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-28 05:15:21,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:21,412 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 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] [2024-11-28 05:15:21,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:15:21,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:21,613 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:21,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1876678678, now seen corresponding path program 1 times [2024-11-28 05:15:21,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:21,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045261502] [2024-11-28 05:15:21,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:21,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-28 05:15:37,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:37,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045261502] [2024-11-28 05:15:37,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045261502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:37,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:37,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:15:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191968367] [2024-11-28 05:15:37,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:37,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 05:15:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:37,715 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 05:15:37,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:15:37,716 INFO L87 Difference]: Start difference. First operand 435 states and 572 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 05:15:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:40,908 INFO L93 Difference]: Finished difference Result 799 states and 1067 transitions. [2024-11-28 05:15:40,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:15:40,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) Word has length 160 [2024-11-28 05:15:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:40,911 INFO L225 Difference]: With dead ends: 799 [2024-11-28 05:15:40,911 INFO L226 Difference]: Without dead ends: 438 [2024-11-28 05:15:40,913 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:15:40,913 INFO L435 NwaCegarLoop]: 504 mSDtfsCounter, 0 mSDsluCounter, 3475 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3979 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:40,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3979 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 05:15:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2024-11-28 05:15:40,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 436. [2024-11-28 05:15:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 308 states have (on average 1.2564935064935066) internal successors, (387), 312 states have internal predecessors, (387), 88 states have call successors, (88), 35 states have call predecessors, (88), 39 states have return successors, (98), 88 states have call predecessors, (98), 86 states have call successors, (98) [2024-11-28 05:15:40,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 573 transitions. [2024-11-28 05:15:40,944 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 573 transitions. Word has length 160 [2024-11-28 05:15:40,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:40,944 INFO L471 AbstractCegarLoop]: Abstraction has 436 states and 573 transitions. [2024-11-28 05:15:40,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (24), 4 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 05:15:40,945 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 573 transitions. [2024-11-28 05:15:40,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-28 05:15:40,946 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:40,947 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 05:15:40,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:15:40,947 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:15:40,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:40,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1443927899, now seen corresponding path program 1 times [2024-11-28 05:15:40,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:15:40,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065986958] [2024-11-28 05:15:40,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:40,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:15:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:57,018 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 05:15:57,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:15:57,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065986958] [2024-11-28 05:15:57,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065986958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:57,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:57,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 05:15:57,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565344754] [2024-11-28 05:15:57,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:57,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:15:57,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:15:57,020 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:15:57,020 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:15:57,021 INFO L87 Difference]: Start difference. First operand 436 states and 573 transitions. Second operand has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 05:16:01,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:16:05,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 05:16:13,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:13,106 INFO L93 Difference]: Finished difference Result 814 states and 1088 transitions. [2024-11-28 05:16:13,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 05:16:13,107 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) Word has length 162 [2024-11-28 05:16:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:13,115 INFO L225 Difference]: With dead ends: 814 [2024-11-28 05:16:13,115 INFO L226 Difference]: Without dead ends: 452 [2024-11-28 05:16:13,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:16:13,117 INFO L435 NwaCegarLoop]: 494 mSDtfsCounter, 5 mSDsluCounter, 3767 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:13,118 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4261 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 450 Invalid, 2 Unknown, 0 Unchecked, 15.8s Time] [2024-11-28 05:16:13,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-28 05:16:13,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 440. [2024-11-28 05:16:13,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 311 states have (on average 1.2540192926045015) internal successors, (390), 316 states have internal predecessors, (390), 88 states have call successors, (88), 35 states have call predecessors, (88), 40 states have return successors, (100), 88 states have call predecessors, (100), 86 states have call successors, (100) [2024-11-28 05:16:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 578 transitions. [2024-11-28 05:16:13,149 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 578 transitions. Word has length 162 [2024-11-28 05:16:13,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:13,150 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 578 transitions. [2024-11-28 05:16:13,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (24), 4 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 05:16:13,150 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 578 transitions. [2024-11-28 05:16:13,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 05:16:13,152 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:13,152 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 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] [2024-11-28 05:16:13,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:16:13,152 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 05:16:13,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:13,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1597182178, now seen corresponding path program 1 times [2024-11-28 05:16:13,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:16:13,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976119624] [2024-11-28 05:16:13,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:13,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:16:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-28 05:16:31,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:16:31,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976119624] [2024-11-28 05:16:31,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976119624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:16:31,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173126457] [2024-11-28 05:16:31,217 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:31,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:31,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:31,219 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:31,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c8e9e1d9-ce37-4852-abf3-c1206cea42f3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:16:40,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:40,611 INFO L256 TraceCheckSpWp]: Trace formula consists of 4609 conjuncts, 194 conjuncts are in the unsatisfiable core [2024-11-28 05:16:40,633 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:40,679 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 [2024-11-28 05:16:46,414 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 05:16:46,415 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 [2024-11-28 05:16:47,065 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 [2024-11-28 05:16:48,117 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 [2024-11-28 05:16:48,379 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 [2024-11-28 05:16:49,520 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-28 05:16:49,520 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 [2024-11-28 05:16:52,914 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 [2024-11-28 05:16:53,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:16:53,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 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 [2024-11-28 05:16:54,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:16:54,765 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 [2024-11-28 05:16:54,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:17:23,919 INFO L349 Elim1Store]: treesize reduction 168, result has 8.7 percent of original size [2024-11-28 05:17:23,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 373 treesize of output 335 [2024-11-28 05:17:24,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:24,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:24,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:24,305 INFO L224 Elim1Store]: Index analysis took 269 ms [2024-11-28 05:17:24,924 INFO L349 Elim1Store]: treesize reduction 179, result has 10.5 percent of original size [2024-11-28 05:17:24,925 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 227 treesize of output 276 [2024-11-28 05:17:25,085 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 88 [2024-11-28 05:17:25,452 INFO L224 Elim1Store]: Index analysis took 253 ms [2024-11-28 05:17:27,813 INFO L349 Elim1Store]: treesize reduction 560, result has 19.9 percent of original size [2024-11-28 05:17:27,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 172 treesize of output 358 [2024-11-28 05:17:28,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 23 [2024-11-28 05:17:31,315 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 73 [2024-11-28 05:19:50,157 WARN L286 SmtUtils]: Spent 15.20s on a formula simplification that was a NOOP. DAG size: 273 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)