./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC --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 f854806972984dce66ab6a9732a626450e69b31616f902ad254c217d61a95da2 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:57:35,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:57:35,648 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-23 22:57:35,653 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:57:35,653 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:57:35,679 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:57:35,679 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:57:35,680 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:57:35,680 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:57:35,680 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:57:35,680 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:57:35,681 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:57:35,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:57:35,681 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:57:35,681 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:57:35,681 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 22:57:35,682 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 22:57:35,683 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:57:35,683 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:57:35,683 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:57:35,683 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:35,683 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:35,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:35,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:35,684 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:57:35,684 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:57:35,684 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:57:35,684 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:57:35,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:35,685 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:57:35,685 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:57:35,686 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:57:35,686 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:57:35,686 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:57:35,686 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC 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 -> f854806972984dce66ab6a9732a626450e69b31616f902ad254c217d61a95da2 [2024-11-23 22:57:35,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:57:35,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:57:35,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:57:35,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:57:35,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:57:35,969 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2024-11-23 22:57:38,902 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/data/62ad7eb96/c232fea781314a8294affbb0796fdbd4/FLAGe648aa5fd [2024-11-23 22:57:39,587 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:57:39,588 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i [2024-11-23 22:57:39,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/data/62ad7eb96/c232fea781314a8294affbb0796fdbd4/FLAGe648aa5fd [2024-11-23 22:57:39,664 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/data/62ad7eb96/c232fea781314a8294affbb0796fdbd4 [2024-11-23 22:57:39,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:57:39,670 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:57:39,673 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:39,673 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:57:39,681 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:57:39,681 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:39" (1/1) ... [2024-11-23 22:57:39,682 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@679076a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:39, skipping insertion in model container [2024-11-23 22:57:39,683 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:57:39" (1/1) ... [2024-11-23 22:57:39,819 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:57:40,146 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2024-11-23 22:57:40,153 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2024-11-23 22:57:41,295 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,295 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,296 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,297 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,298 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,321 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,321 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,323 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,324 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,326 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,327 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,328 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:41,328 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,543 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,544 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,573 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,574 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,583 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,584 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,598 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,599 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,599 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,600 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,600 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,601 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,651 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[229077,229090] [2024-11-23 22:57:42,652 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:42,695 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:57:42,712 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4492,4505] [2024-11-23 22:57:42,716 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[4552,4565] [2024-11-23 22:57:42,765 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,769 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,769 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,770 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,780 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,781 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,782 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,783 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,783 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,784 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,785 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,785 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:42,884 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7576-7587] [2024-11-23 22:57:43,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,051 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,078 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-23 22:57:43,112 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_01f3e67a-0bc1-46c3-a53e-944319bebb4f/sv-benchmarks/c/aws-c-common/aws_hash_table_put_harness.i[229077,229090] [2024-11-23 22:57:43,112 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:57:43,349 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:57:43,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43 WrapperNode [2024-11-23 22:57:43,350 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:57:43,351 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:43,351 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:57:43,351 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:57:43,358 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,436 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,552 INFO L138 Inliner]: procedures = 764, calls = 2484, calls flagged for inlining = 71, calls inlined = 25, statements flattened = 1465 [2024-11-23 22:57:43,553 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:57:43,553 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:57:43,553 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:57:43,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:57:43,565 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,565 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,599 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-23 22:57:43,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,659 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,667 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,674 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,686 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,692 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,708 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:57:43,709 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:57:43,713 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:57:43,714 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:57:43,715 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (1/1) ... [2024-11-23 22:57:43,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:57:43,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:57:43,756 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:57:43,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:57:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2024-11-23 22:57:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2024-11-23 22:57:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-23 22:57:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2024-11-23 22:57:43,787 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2024-11-23 22:57:43,787 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2024-11-23 22:57:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-23 22:57:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-23 22:57:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2024-11-23 22:57:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-23 22:57:43,788 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-23 22:57:43,788 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-23 22:57:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2024-11-23 22:57:43,789 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:57:43,789 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:57:43,790 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-23 22:57:43,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-23 22:57:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2024-11-23 22:57:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-23 22:57:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-23 22:57:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-23 22:57:43,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-23 22:57:43,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-23 22:57:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2024-11-23 22:57:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2024-11-23 22:57:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-23 22:57:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-23 22:57:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-23 22:57:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-23 22:57:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-23 22:57:43,794 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-23 22:57:43,794 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-23 22:57:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2024-11-23 22:57:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2024-11-23 22:57:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-23 22:57:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-23 22:57:43,795 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2024-11-23 22:57:43,795 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2024-11-23 22:57:44,371 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:57:44,373 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:57:44,821 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 22:57:44,842 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume false; [2024-11-23 22:57:44,842 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !false; [2024-11-23 22:57:44,875 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 22:57:44,901 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2024-11-23 22:57:44,901 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2024-11-23 22:57:45,197 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 22:57:45,200 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 22:57:45,389 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume false; [2024-11-23 22:57:45,389 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !false; [2024-11-23 22:57:45,389 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume !false; [2024-11-23 22:57:45,389 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##41: assume false; [2024-11-23 22:57:52,162 INFO L? ?]: Removed 447 outVars from TransFormulas that were not future-live. [2024-11-23 22:57:52,163 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:57:52,183 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:57:52,183 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-23 22:57:52,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:52 BoogieIcfgContainer [2024-11-23 22:57:52,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:57:52,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:57:52,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:57:52,191 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:57:52,191 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:57:39" (1/3) ... [2024-11-23 22:57:52,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b55a691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:52, skipping insertion in model container [2024-11-23 22:57:52,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:57:43" (2/3) ... [2024-11-23 22:57:52,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b55a691 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:57:52, skipping insertion in model container [2024-11-23 22:57:52,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:57:52" (3/3) ... [2024-11-23 22:57:52,193 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_table_put_harness.i [2024-11-23 22:57:52,208 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:57:52,209 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_table_put_harness.i that has 30 procedures, 410 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-23 22:57:52,269 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:57:52,280 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;@2d7a744c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:57:52,280 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-23 22:57:52,285 INFO L276 IsEmpty]: Start isEmpty. Operand has 410 states, 297 states have (on average 1.3097643097643097) internal successors, (389), 294 states have internal predecessors, (389), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2024-11-23 22:57:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 22:57:52,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:57:52,298 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2024-11-23 22:57:52,298 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:57:52,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:52,304 INFO L85 PathProgramCache]: Analyzing trace with hash 744838138, now seen corresponding path program 1 times [2024-11-23 22:57:52,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:52,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447950617] [2024-11-23 22:57:52,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:57:52,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2024-11-23 22:58:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447950617] [2024-11-23 22:58:00,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447950617] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:00,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497658553] [2024-11-23 22:58:00,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:00,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:00,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:00,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:00,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:58:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:07,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 4502 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-23 22:58:07,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2024-11-23 22:58:07,445 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:58:07,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497658553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:07,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:58:07,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-23 22:58:07,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011612617] [2024-11-23 22:58:07,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:07,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-23 22:58:07,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:07,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-23 22:58:07,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:58:07,481 INFO L87 Difference]: Start difference. First operand has 410 states, 297 states have (on average 1.3097643097643097) internal successors, (389), 294 states have internal predecessors, (389), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 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 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 22:58:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:07,559 INFO L93 Difference]: Finished difference Result 814 states and 1170 transitions. [2024-11-23 22:58:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-23 22:58:07,561 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 134 [2024-11-23 22:58:07,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:07,578 INFO L225 Difference]: With dead ends: 814 [2024-11-23 22:58:07,578 INFO L226 Difference]: Without dead ends: 404 [2024-11-23 22:58:07,590 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-23 22:58:07,593 INFO L435 NwaCegarLoop]: 549 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, 549 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 [2024-11-23 22:58:07,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 22:58:07,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-23 22:58:07,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2024-11-23 22:58:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 288 states have (on average 1.2951388888888888) internal successors, (373), 289 states have internal predecessors, (373), 86 states have call successors, (86), 29 states have call predecessors, (86), 29 states have return successors, (85), 85 states have call predecessors, (85), 85 states have call successors, (85) [2024-11-23 22:58:07,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 544 transitions. [2024-11-23 22:58:07,686 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 544 transitions. Word has length 134 [2024-11-23 22:58:07,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:07,687 INFO L471 AbstractCegarLoop]: Abstraction has 404 states and 544 transitions. [2024-11-23 22:58:07,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 33.0) internal successors, (66), 2 states have internal predecessors, (66), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 22:58:07,688 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 544 transitions. [2024-11-23 22:58:07,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2024-11-23 22:58:07,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:07,697 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2024-11-23 22:58:07,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:58:07,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-23 22:58:07,898 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:07,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1658936640, now seen corresponding path program 1 times [2024-11-23 22:58:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765606852] [2024-11-23 22:58:07,899 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 22:58:15,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:15,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765606852] [2024-11-23 22:58:15,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765606852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:15,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:15,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:58:15,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157410533] [2024-11-23 22:58:15,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:15,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:58:15,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:15,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:58:15,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:15,006 INFO L87 Difference]: Start difference. First operand 404 states and 544 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 22:58:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:15,213 INFO L93 Difference]: Finished difference Result 804 states and 1086 transitions. [2024-11-23 22:58:15,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:58:15,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 134 [2024-11-23 22:58:15,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:15,225 INFO L225 Difference]: With dead ends: 804 [2024-11-23 22:58:15,228 INFO L226 Difference]: Without dead ends: 409 [2024-11-23 22:58:15,230 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 [2024-11-23 22:58:15,231 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2160 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:15,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2160 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 22:58:15,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-23 22:58:15,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2024-11-23 22:58:15,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 292 states have (on average 1.2910958904109588) internal successors, (377), 293 states have internal predecessors, (377), 86 states have call successors, (86), 29 states have call predecessors, (86), 30 states have return successors, (89), 86 states have call predecessors, (89), 85 states have call successors, (89) [2024-11-23 22:58:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 552 transitions. [2024-11-23 22:58:15,288 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 552 transitions. Word has length 134 [2024-11-23 22:58:15,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:15,289 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 552 transitions. [2024-11-23 22:58:15,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-23 22:58:15,289 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 552 transitions. [2024-11-23 22:58:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:58:15,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:15,295 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:15,295 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:58:15,295 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:15,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:15,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1941128681, now seen corresponding path program 1 times [2024-11-23 22:58:15,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:15,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151484115] [2024-11-23 22:58:15,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:15,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:25,854 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 22:58:25,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:25,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151484115] [2024-11-23 22:58:25,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151484115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:25,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:25,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:58:25,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186989103] [2024-11-23 22:58:25,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:25,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-23 22:58:25,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:25,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-23 22:58:25,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-23 22:58:25,859 INFO L87 Difference]: Start difference. First operand 409 states and 552 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-23 22:58:29,930 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 [] [2024-11-23 22:58:34,469 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.54s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 22:58:38,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 22:58:42,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.32s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 22:58:47,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:47,950 INFO L93 Difference]: Finished difference Result 805 states and 1086 transitions. [2024-11-23 22:58:47,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 22:58:47,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 140 [2024-11-23 22:58:47,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:47,958 INFO L225 Difference]: With dead ends: 805 [2024-11-23 22:58:47,958 INFO L226 Difference]: Without dead ends: 417 [2024-11-23 22:58:47,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:58:47,961 INFO L435 NwaCegarLoop]: 535 mSDtfsCounter, 11 mSDsluCounter, 3515 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 4050 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:47,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 4050 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 273 Invalid, 4 Unknown, 0 Unchecked, 21.6s Time] [2024-11-23 22:58:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-23 22:58:47,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 414. [2024-11-23 22:58:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 296 states have (on average 1.2905405405405406) internal successors, (382), 298 states have internal predecessors, (382), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2024-11-23 22:58:47,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 558 transitions. [2024-11-23 22:58:47,985 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 558 transitions. Word has length 140 [2024-11-23 22:58:47,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:47,985 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 558 transitions. [2024-11-23 22:58:47,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 4 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2024-11-23 22:58:47,986 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 558 transitions. [2024-11-23 22:58:47,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-23 22:58:47,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:47,988 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:47,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:58:47,989 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:47,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 30086123, now seen corresponding path program 1 times [2024-11-23 22:58:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:47,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376818717] [2024-11-23 22:58:47,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2024-11-23 22:58:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:54,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376818717] [2024-11-23 22:58:54,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376818717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:58:54,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:58:54,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 22:58:54,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595757003] [2024-11-23 22:58:54,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:54,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:58:54,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:54,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:58:54,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:54,777 INFO L87 Difference]: Start difference. First operand 414 states and 558 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:58:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 22:58:55,250 INFO L93 Difference]: Finished difference Result 812 states and 1094 transitions. [2024-11-23 22:58:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:58:55,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 140 [2024-11-23 22:58:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 22:58:55,255 INFO L225 Difference]: With dead ends: 812 [2024-11-23 22:58:55,257 INFO L226 Difference]: Without dead ends: 412 [2024-11-23 22:58:55,258 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:58:55,261 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 83 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 22:58:55,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1503 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 22:58:55,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-23 22:58:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2024-11-23 22:58:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 294 states have (on average 1.2857142857142858) internal successors, (378), 296 states have internal predecessors, (378), 86 states have call successors, (86), 29 states have call predecessors, (86), 31 states have return successors, (90), 86 states have call predecessors, (90), 85 states have call successors, (90) [2024-11-23 22:58:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 554 transitions. [2024-11-23 22:58:55,296 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 554 transitions. Word has length 140 [2024-11-23 22:58:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 22:58:55,296 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 554 transitions. [2024-11-23 22:58:55,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 3 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2024-11-23 22:58:55,299 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 554 transitions. [2024-11-23 22:58:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-23 22:58:55,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 22:58:55,301 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:55,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 22:58:55,302 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 22:58:55,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:55,302 INFO L85 PathProgramCache]: Analyzing trace with hash -236223123, now seen corresponding path program 1 times [2024-11-23 22:58:55,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30431984] [2024-11-23 22:58:55,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:58:55,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:03,456 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2024-11-23 22:59:03,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30431984] [2024-11-23 22:59:03,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30431984] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:03,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623592208] [2024-11-23 22:59:03,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:59:03,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:03,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:03,459 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:03,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:59:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:59:10,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 4530 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-23 22:59:10,837 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:13,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-23 22:59:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-23 22:59:17,366 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:59:17,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623592208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:59:17,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:59:17,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2024-11-23 22:59:17,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506939216] [2024-11-23 22:59:17,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:59:17,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:59:17,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:17,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:59:17,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:59:17,369 INFO L87 Difference]: Start difference. First operand 412 states and 554 transitions. Second operand has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 22:59:21,441 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] [2024-11-23 22:59:25,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 22:59:30,209 WARN L539 Checker$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] [2024-11-23 22:59:34,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:38,935 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:43,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:47,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:52,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 22:59:57,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:01,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:05,413 WARN L539 Checker$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] [2024-11-23 23:00:09,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:13,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:23,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:27,859 WARN L539 Checker$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] [2024-11-23 23:00:32,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:36,129 WARN L539 Checker$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] [2024-11-23 23:00:40,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:44,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:48,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:00:52,928 WARN L539 Checker$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] [2024-11-23 23:00:57,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:01,136 WARN L539 Checker$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] [2024-11-23 23:01:05,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:09,420 WARN L539 Checker$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] [2024-11-23 23:01:13,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:17,730 WARN L539 Checker$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] [2024-11-23 23:01:21,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:26,225 WARN L539 Checker$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] [2024-11-23 23:01:31,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:35,802 WARN L539 Checker$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] [2024-11-23 23:01:39,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:44,291 WARN L539 Checker$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] [2024-11-23 23:01:48,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:01:52,517 WARN L539 Checker$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] [2024-11-23 23:01:56,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:00,721 WARN L539 Checker$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] [2024-11-23 23:02:04,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:08,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:13,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:17,812 WARN L539 Checker$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] [2024-11-23 23:02:22,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:26,251 WARN L539 Checker$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] [2024-11-23 23:02:30,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:34,644 WARN L539 Checker$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] [2024-11-23 23:02:38,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:42,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:48,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:52,515 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:02:56,643 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] [2024-11-23 23:02:56,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:02:56,658 INFO L93 Difference]: Finished difference Result 843 states and 1119 transitions. [2024-11-23 23:02:56,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:02:56,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 146 [2024-11-23 23:02:56,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:02:56,663 INFO L225 Difference]: With dead ends: 843 [2024-11-23 23:02:56,663 INFO L226 Difference]: Without dead ends: 443 [2024-11-23 23:02:56,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=103, Invalid=709, Unknown=0, NotChecked=0, Total=812 [2024-11-23 23:02:56,667 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 576 mSDsluCounter, 3863 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 29 mSolverCounterUnsat, 50 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 212.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 576 SdHoareTripleChecker+Valid, 4383 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 50 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:02:56,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [576 Valid, 4383 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 637 Invalid, 50 Unknown, 0 Unchecked, 215.6s Time] [2024-11-23 23:02:56,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2024-11-23 23:02:56,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 440. [2024-11-23 23:02:56,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 316 states have (on average 1.2721518987341771) internal successors, (402), 317 states have internal predecessors, (402), 88 states have call successors, (88), 34 states have call predecessors, (88), 35 states have return successors, (91), 88 states have call predecessors, (91), 87 states have call successors, (91) [2024-11-23 23:02:56,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 581 transitions. [2024-11-23 23:02:56,699 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 581 transitions. Word has length 146 [2024-11-23 23:02:56,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:02:56,700 INFO L471 AbstractCegarLoop]: Abstraction has 440 states and 581 transitions. [2024-11-23 23:02:56,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.25) internal successors, (75), 11 states have internal predecessors, (75), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2024-11-23 23:02:56,700 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 581 transitions. [2024-11-23 23:02:56,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-23 23:02:56,703 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:02:56,703 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:02:56,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:02:56,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:02:56,904 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:02:56,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:02:56,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1429379, now seen corresponding path program 1 times [2024-11-23 23:02:56,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:02:56,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235892130] [2024-11-23 23:02:56,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:02:56,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:02,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2024-11-23 23:03:07,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:07,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235892130] [2024-11-23 23:03:07,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235892130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:07,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:07,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:03:07,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155374853] [2024-11-23 23:03:07,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:07,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:03:07,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:07,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:03:07,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:03:07,143 INFO L87 Difference]: Start difference. First operand 440 states and 581 transitions. Second operand has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-23 23:03:07,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:03:07,601 INFO L93 Difference]: Finished difference Result 446 states and 586 transitions. [2024-11-23 23:03:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:03:07,601 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 153 [2024-11-23 23:03:07,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:03:07,609 INFO L225 Difference]: With dead ends: 446 [2024-11-23 23:03:07,610 INFO L226 Difference]: Without dead ends: 444 [2024-11-23 23:03:07,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:03:07,613 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 4 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2143 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:03:07,613 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2143 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:03:07,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-23 23:03:07,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-23 23:03:07,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 319 states have (on average 1.2695924764890283) internal successors, (405), 320 states have internal predecessors, (405), 88 states have call successors, (88), 35 states have call predecessors, (88), 36 states have return successors, (91), 88 states have call predecessors, (91), 87 states have call successors, (91) [2024-11-23 23:03:07,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 584 transitions. [2024-11-23 23:03:07,670 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 584 transitions. Word has length 153 [2024-11-23 23:03:07,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:03:07,670 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 584 transitions. [2024-11-23 23:03:07,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (26), 2 states have call predecessors, (26), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) [2024-11-23 23:03:07,671 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 584 transitions. [2024-11-23 23:03:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-23 23:03:07,673 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:03:07,673 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:03:07,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 23:03:07,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:03:07,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:03:07,676 INFO L85 PathProgramCache]: Analyzing trace with hash 871364679, now seen corresponding path program 1 times [2024-11-23 23:03:07,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:03:07,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200419470] [2024-11-23 23:03:07,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:03:07,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:03:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:03:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2024-11-23 23:03:29,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:03:29,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200419470] [2024-11-23 23:03:29,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200419470] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:03:29,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:03:29,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-23 23:03:29,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111131263] [2024-11-23 23:03:29,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:03:29,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:03:29,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:03:29,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:03:29,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2024-11-23 23:03:29,927 INFO L87 Difference]: Start difference. First operand 444 states and 584 transitions. Second operand has 22 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 14 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) [2024-11-23 23:03:33,988 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 [] [2024-11-23 23:03:38,356 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:03:42,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:03:47,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:03:51,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:03:55,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.37s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:00,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:04,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:08,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:13,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:17,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:21,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:26,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:30,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:04:35,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:05:36,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:36,059 INFO L93 Difference]: Finished difference Result 825 states and 1097 transitions. [2024-11-23 23:05:36,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-23 23:05:36,060 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 14 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) Word has length 166 [2024-11-23 23:05:36,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:36,064 INFO L225 Difference]: With dead ends: 825 [2024-11-23 23:05:36,065 INFO L226 Difference]: Without dead ends: 459 [2024-11-23 23:05:36,066 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=107, Invalid=885, Unknown=0, NotChecked=0, Total=992 [2024-11-23 23:05:36,067 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 354 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 4138 mSolverCounterSat, 104 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 4257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 4138 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:36,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 2822 Invalid, 4257 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [104 Valid, 4138 Invalid, 15 Unknown, 0 Unchecked, 122.9s Time] [2024-11-23 23:05:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-23 23:05:36,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 446. [2024-11-23 23:05:36,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 320 states have (on average 1.26875) internal successors, (406), 322 states have internal predecessors, (406), 88 states have call successors, (88), 35 states have call predecessors, (88), 37 states have return successors, (97), 88 states have call predecessors, (97), 87 states have call successors, (97) [2024-11-23 23:05:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 591 transitions. [2024-11-23 23:05:36,102 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 591 transitions. Word has length 166 [2024-11-23 23:05:36,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:36,103 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 591 transitions. [2024-11-23 23:05:36,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 14 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (26), 13 states have call predecessors, (26), 13 states have call successors, (26) [2024-11-23 23:05:36,103 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 591 transitions. [2024-11-23 23:05:36,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 23:05:36,105 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:36,106 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:36,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:05:36,106 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:36,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:36,106 INFO L85 PathProgramCache]: Analyzing trace with hash 882232623, now seen corresponding path program 1 times [2024-11-23 23:05:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871665189] [2024-11-23 23:05:36,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:05:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871665189] [2024-11-23 23:05:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871665189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:43,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:05:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61476943] [2024-11-23 23:05:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:43,390 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:05:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:43,391 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:05:43,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:43,392 INFO L87 Difference]: Start difference. First operand 446 states and 591 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:05:44,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:44,092 INFO L93 Difference]: Finished difference Result 454 states and 599 transitions. [2024-11-23 23:05:44,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:44,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-23 23:05:44,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:44,096 INFO L225 Difference]: With dead ends: 454 [2024-11-23 23:05:44,096 INFO L226 Difference]: Without dead ends: 452 [2024-11-23 23:05:44,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:05:44,097 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 3 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:44,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2148 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:05:44,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-23 23:05:44,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 451. [2024-11-23 23:05:44,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 326 states have internal predecessors, (409), 89 states have call successors, (89), 36 states have call predecessors, (89), 38 states have return successors, (98), 88 states have call predecessors, (98), 88 states have call successors, (98) [2024-11-23 23:05:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 596 transitions. [2024-11-23 23:05:44,132 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 596 transitions. Word has length 173 [2024-11-23 23:05:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:44,133 INFO L471 AbstractCegarLoop]: Abstraction has 451 states and 596 transitions. [2024-11-23 23:05:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:05:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 596 transitions. [2024-11-23 23:05:44,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-23 23:05:44,137 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:44,137 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:44,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:05:44,137 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:44,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:44,142 INFO L85 PathProgramCache]: Analyzing trace with hash 884079665, now seen corresponding path program 1 times [2024-11-23 23:05:44,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:44,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939547084] [2024-11-23 23:05:44,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:44,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:49,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:50,807 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:05:50,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:50,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939547084] [2024-11-23 23:05:50,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939547084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:50,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:50,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:05:50,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815730562] [2024-11-23 23:05:50,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:50,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:05:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:50,809 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:05:50,809 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:50,810 INFO L87 Difference]: Start difference. First operand 451 states and 596 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:05:51,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:51,361 INFO L93 Difference]: Finished difference Result 457 states and 601 transitions. [2024-11-23 23:05:51,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:05:51,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 173 [2024-11-23 23:05:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:51,365 INFO L225 Difference]: With dead ends: 457 [2024-11-23 23:05:51,365 INFO L226 Difference]: Without dead ends: 455 [2024-11-23 23:05:51,366 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:05:51,367 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 3 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:51,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2147 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:05:51,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-23 23:05:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 450. [2024-11-23 23:05:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 323 states have (on average 1.2662538699690402) internal successors, (409), 325 states have internal predecessors, (409), 88 states have call successors, (88), 36 states have call predecessors, (88), 38 states have return successors, (97), 88 states have call predecessors, (97), 87 states have call successors, (97) [2024-11-23 23:05:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 594 transitions. [2024-11-23 23:05:51,397 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 594 transitions. Word has length 173 [2024-11-23 23:05:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:51,397 INFO L471 AbstractCegarLoop]: Abstraction has 450 states and 594 transitions. [2024-11-23 23:05:51,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:05:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 594 transitions. [2024-11-23 23:05:51,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:05:51,400 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:51,400 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:51,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:05:51,401 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:51,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1923177174, now seen corresponding path program 1 times [2024-11-23 23:05:51,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:51,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27700991] [2024-11-23 23:05:51,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:51,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:05:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:05:56,802 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:05:56,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:05:56,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27700991] [2024-11-23 23:05:56,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27700991] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:05:56,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:05:56,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:05:56,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481648605] [2024-11-23 23:05:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:05:56,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:05:56,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:05:56,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:05:56,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:05:56,804 INFO L87 Difference]: Start difference. First operand 450 states and 594 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 23:05:57,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:05:57,463 INFO L93 Difference]: Finished difference Result 841 states and 1131 transitions. [2024-11-23 23:05:57,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:05:57,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 181 [2024-11-23 23:05:57,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:05:57,468 INFO L225 Difference]: With dead ends: 841 [2024-11-23 23:05:57,468 INFO L226 Difference]: Without dead ends: 493 [2024-11-23 23:05:57,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:05:57,470 INFO L435 NwaCegarLoop]: 556 mSDtfsCounter, 166 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:05:57,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2104 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-23 23:05:57,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-23 23:05:57,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 454. [2024-11-23 23:05:57,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 326 states have (on average 1.2638036809815951) internal successors, (412), 328 states have internal predecessors, (412), 89 states have call successors, (89), 36 states have call predecessors, (89), 38 states have return successors, (98), 89 states have call predecessors, (98), 88 states have call successors, (98) [2024-11-23 23:05:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 599 transitions. [2024-11-23 23:05:57,501 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 599 transitions. Word has length 181 [2024-11-23 23:05:57,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:05:57,502 INFO L471 AbstractCegarLoop]: Abstraction has 454 states and 599 transitions. [2024-11-23 23:05:57,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-23 23:05:57,503 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 599 transitions. [2024-11-23 23:05:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-23 23:05:57,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:05:57,505 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:05:57,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:05:57,505 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:05:57,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:05:57,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1907658456, now seen corresponding path program 1 times [2024-11-23 23:05:57,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:05:57,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195913361] [2024-11-23 23:05:57,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:05:57,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:06:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:02,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195913361] [2024-11-23 23:06:02,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195913361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:02,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:02,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:06:02,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129284467] [2024-11-23 23:06:02,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:02,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:06:02,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:02,735 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:06:02,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:06:02,736 INFO L87 Difference]: Start difference. First operand 454 states and 599 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:06:03,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:03,002 INFO L93 Difference]: Finished difference Result 520 states and 682 transitions. [2024-11-23 23:06:03,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:03,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 181 [2024-11-23 23:06:03,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:03,007 INFO L225 Difference]: With dead ends: 520 [2024-11-23 23:06:03,007 INFO L226 Difference]: Without dead ends: 458 [2024-11-23 23:06:03,008 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 [2024-11-23 23:06:03,009 INFO L435 NwaCegarLoop]: 541 mSDtfsCounter, 0 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:03,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2153 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:06:03,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2024-11-23 23:06:03,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2024-11-23 23:06:03,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 329 states have (on average 1.2613981762917934) internal successors, (415), 331 states have internal predecessors, (415), 89 states have call successors, (89), 36 states have call predecessors, (89), 39 states have return successors, (99), 90 states have call predecessors, (99), 88 states have call successors, (99) [2024-11-23 23:06:03,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 603 transitions. [2024-11-23 23:06:03,037 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 603 transitions. Word has length 181 [2024-11-23 23:06:03,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:03,038 INFO L471 AbstractCegarLoop]: Abstraction has 458 states and 603 transitions. [2024-11-23 23:06:03,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:06:03,038 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 603 transitions. [2024-11-23 23:06:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-23 23:06:03,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:03,041 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:03,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 23:06:03,042 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:03,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2101051840, now seen corresponding path program 1 times [2024-11-23 23:06:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897198509] [2024-11-23 23:06:03,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:03,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:07,820 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:06:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897198509] [2024-11-23 23:06:07,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897198509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:07,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:07,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:06:07,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787633024] [2024-11-23 23:06:07,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:07,821 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:06:07,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:07,822 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:06:07,822 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:06:07,822 INFO L87 Difference]: Start difference. First operand 458 states and 603 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:06:07,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:07,919 INFO L93 Difference]: Finished difference Result 724 states and 958 transitions. [2024-11-23 23:06:07,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:06:07,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) Word has length 183 [2024-11-23 23:06:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:07,923 INFO L225 Difference]: With dead ends: 724 [2024-11-23 23:06:07,924 INFO L226 Difference]: Without dead ends: 459 [2024-11-23 23:06:07,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:06:07,925 INFO L435 NwaCegarLoop]: 542 mSDtfsCounter, 0 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:07,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1079 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:06:07,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-23 23:06:07,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2024-11-23 23:06:07,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 330 states have (on average 1.2606060606060605) internal successors, (416), 332 states have internal predecessors, (416), 89 states have call successors, (89), 36 states have call predecessors, (89), 39 states have return successors, (99), 90 states have call predecessors, (99), 88 states have call successors, (99) [2024-11-23 23:06:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2024-11-23 23:06:07,954 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 183 [2024-11-23 23:06:07,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:07,955 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2024-11-23 23:06:07,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (26), 2 states have call predecessors, (26), 1 states have call successors, (26) [2024-11-23 23:06:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2024-11-23 23:06:07,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-23 23:06:07,957 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:07,957 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:07,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 23:06:07,957 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:07,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 666860591, now seen corresponding path program 1 times [2024-11-23 23:06:07,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:07,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625892874] [2024-11-23 23:06:07,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:07,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:16,373 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-23 23:06:16,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:16,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625892874] [2024-11-23 23:06:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625892874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-23 23:06:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140708433] [2024-11-23 23:06:16,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:16,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:06:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:16,375 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:06:16,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:06:16,376 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:06:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:19,319 INFO L93 Difference]: Finished difference Result 892 states and 1201 transitions. [2024-11-23 23:06:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:06:19,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 196 [2024-11-23 23:06:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:19,323 INFO L225 Difference]: With dead ends: 892 [2024-11-23 23:06:19,323 INFO L226 Difference]: Without dead ends: 555 [2024-11-23 23:06:19,324 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-23 23:06:19,325 INFO L435 NwaCegarLoop]: 555 mSDtfsCounter, 132 mSDsluCounter, 5512 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:19,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 6067 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-23 23:06:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-23 23:06:19,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 520. [2024-11-23 23:06:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 378 states have (on average 1.2751322751322751) internal successors, (482), 381 states have internal predecessors, (482), 97 states have call successors, (97), 39 states have call predecessors, (97), 44 states have return successors, (112), 99 states have call predecessors, (112), 96 states have call successors, (112) [2024-11-23 23:06:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 691 transitions. [2024-11-23 23:06:19,356 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 691 transitions. Word has length 196 [2024-11-23 23:06:19,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:19,357 INFO L471 AbstractCegarLoop]: Abstraction has 520 states and 691 transitions. [2024-11-23 23:06:19,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 9 states have internal predecessors, (90), 6 states have call successors, (32), 5 states have call predecessors, (32), 2 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2024-11-23 23:06:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 691 transitions. [2024-11-23 23:06:19,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-23 23:06:19,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:19,359 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:19,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-23 23:06:19,360 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:19,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:19,360 INFO L85 PathProgramCache]: Analyzing trace with hash 960603128, now seen corresponding path program 1 times [2024-11-23 23:06:19,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:19,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904707319] [2024-11-23 23:06:19,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:19,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:23,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:24,654 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-23 23:06:24,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:24,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904707319] [2024-11-23 23:06:24,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904707319] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:24,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:24,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:06:24,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474941043] [2024-11-23 23:06:24,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:24,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:06:24,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:24,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:06:24,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:06:24,656 INFO L87 Difference]: Start difference. First operand 520 states and 691 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-23 23:06:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:24,877 INFO L93 Difference]: Finished difference Result 585 states and 773 transitions. [2024-11-23 23:06:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) Word has length 191 [2024-11-23 23:06:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:24,880 INFO L225 Difference]: With dead ends: 585 [2024-11-23 23:06:24,880 INFO L226 Difference]: Without dead ends: 525 [2024-11-23 23:06:24,881 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 [2024-11-23 23:06:24,881 INFO L435 NwaCegarLoop]: 540 mSDtfsCounter, 0 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:24,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2154 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:06:24,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2024-11-23 23:06:24,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2024-11-23 23:06:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 382 states have (on average 1.2722513089005236) internal successors, (486), 385 states have internal predecessors, (486), 97 states have call successors, (97), 39 states have call predecessors, (97), 45 states have return successors, (114), 100 states have call predecessors, (114), 96 states have call successors, (114) [2024-11-23 23:06:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 697 transitions. [2024-11-23 23:06:24,912 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 697 transitions. Word has length 191 [2024-11-23 23:06:24,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:24,913 INFO L471 AbstractCegarLoop]: Abstraction has 525 states and 697 transitions. [2024-11-23 23:06:24,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 1 states have call successors, (28) [2024-11-23 23:06:24,913 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 697 transitions. [2024-11-23 23:06:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-23 23:06:24,915 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:24,915 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:24,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 23:06:24,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:24,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 788771650, now seen corresponding path program 1 times [2024-11-23 23:06:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:24,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212331389] [2024-11-23 23:06:24,917 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:24,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:30,845 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-23 23:06:30,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:30,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212331389] [2024-11-23 23:06:30,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212331389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:06:30,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:06:30,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:06:30,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567816537] [2024-11-23 23:06:30,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:06:30,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:06:30,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:06:30,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:06:30,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:06:30,847 INFO L87 Difference]: Start difference. First operand 525 states and 697 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-23 23:06:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:06:31,465 INFO L93 Difference]: Finished difference Result 983 states and 1328 transitions. [2024-11-23 23:06:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:06:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 197 [2024-11-23 23:06:31,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:06:31,471 INFO L225 Difference]: With dead ends: 983 [2024-11-23 23:06:31,471 INFO L226 Difference]: Without dead ends: 570 [2024-11-23 23:06:31,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:06:31,475 INFO L435 NwaCegarLoop]: 557 mSDtfsCounter, 107 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:06:31,475 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 1590 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-23 23:06:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-23 23:06:31,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 519. [2024-11-23 23:06:31,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 377 states have (on average 1.2705570291777188) internal successors, (479), 381 states have internal predecessors, (479), 96 states have call successors, (96), 39 states have call predecessors, (96), 45 states have return successors, (112), 98 states have call predecessors, (112), 95 states have call successors, (112) [2024-11-23 23:06:31,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 687 transitions. [2024-11-23 23:06:31,511 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 687 transitions. Word has length 197 [2024-11-23 23:06:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:06:31,511 INFO L471 AbstractCegarLoop]: Abstraction has 519 states and 687 transitions. [2024-11-23 23:06:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 3 states have call successors, (30), 2 states have call predecessors, (30), 1 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-23 23:06:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 687 transitions. [2024-11-23 23:06:31,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-23 23:06:31,513 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:06:31,514 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:06:31,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 23:06:31,514 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:06:31,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:06:31,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1445592190, now seen corresponding path program 1 times [2024-11-23 23:06:31,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:06:31,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634600729] [2024-11-23 23:06:31,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:31,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:06:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 23:06:41,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:06:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634600729] [2024-11-23 23:06:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634600729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:06:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847964671] [2024-11-23 23:06:41,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:06:41,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:06:41,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:06:41,994 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:06:41,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:06:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:06:49,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 4858 conjuncts, 94 conjuncts are in the unsatisfiable core [2024-11-23 23:06:49,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:06:54,284 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 [2024-11-23 23:06:54,342 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 [2024-11-23 23:06:54,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:06:54,387 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 [2024-11-23 23:06:54,461 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 [2024-11-23 23:07:00,327 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:07:00,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2024-11-23 23:07:00,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:07:00,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 41 [2024-11-23 23:07:05,227 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_16| Int) (|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_16| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_16|) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_16|)) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_16|)) (exists ((|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_17| Int) (|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_17| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_17|) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_17|) 2) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_17|))) is different from true [2024-11-23 23:07:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 46 proven. 33 refuted. 12 times theorem prover too weak. 77 trivial. 7 not checked. [2024-11-23 23:07:11,293 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:07:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2024-11-23 23:07:24,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847964671] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:24,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:07:24,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7, 25] total 37 [2024-11-23 23:07:24,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285128394] [2024-11-23 23:07:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:07:24,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 23:07:24,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:07:24,442 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 23:07:24,443 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1159, Unknown=1, NotChecked=68, Total=1332 [2024-11-23 23:07:24,443 INFO L87 Difference]: Start difference. First operand 519 states and 687 transitions. Second operand has 12 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-23 23:07:28,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:07:28,089 INFO L93 Difference]: Finished difference Result 972 states and 1301 transitions. [2024-11-23 23:07:28,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:07:28,090 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 197 [2024-11-23 23:07:28,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:07:28,095 INFO L225 Difference]: With dead ends: 972 [2024-11-23 23:07:28,095 INFO L226 Difference]: Without dead ends: 531 [2024-11-23 23:07:28,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 20.4s TimeCoverageRelationStatistics Valid=104, Invalid=1159, Unknown=1, NotChecked=68, Total=1332 [2024-11-23 23:07:28,099 INFO L435 NwaCegarLoop]: 516 mSDtfsCounter, 0 mSDsluCounter, 4080 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4596 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:07:28,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4596 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-23 23:07:28,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2024-11-23 23:07:28,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 523. [2024-11-23 23:07:28,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 380 states have (on average 1.268421052631579) internal successors, (482), 384 states have internal predecessors, (482), 96 states have call successors, (96), 39 states have call predecessors, (96), 46 states have return successors, (114), 99 states have call predecessors, (114), 95 states have call successors, (114) [2024-11-23 23:07:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 692 transitions. [2024-11-23 23:07:28,208 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 692 transitions. Word has length 197 [2024-11-23 23:07:28,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:07:28,208 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 692 transitions. [2024-11-23 23:07:28,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 10.3) internal successors, (103), 9 states have internal predecessors, (103), 4 states have call successors, (31), 2 states have call predecessors, (31), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-23 23:07:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 692 transitions. [2024-11-23 23:07:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-23 23:07:28,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:07:28,210 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:07:28,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:07:28,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 23:07:28,411 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:07:28,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:07:28,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1687089091, now seen corresponding path program 1 times [2024-11-23 23:07:28,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:07:28,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601515048] [2024-11-23 23:07:28,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:07:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:40,001 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2024-11-23 23:07:40,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:07:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601515048] [2024-11-23 23:07:40,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601515048] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:07:40,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179670587] [2024-11-23 23:07:40,001 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:07:40,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:07:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:07:40,003 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:07:40,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:07:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:07:47,992 INFO L256 TraceCheckSpWp]: Trace formula consists of 4862 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-23 23:07:48,004 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:07:51,956 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 [2024-11-23 23:07:52,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:07:52,002 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 [2024-11-23 23:07:52,070 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 [2024-11-23 23:07:52,133 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 [2024-11-23 23:08:01,491 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:08:01,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 39 [2024-11-23 23:08:01,699 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:08:01,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2024-11-23 23:08:06,732 WARN L873 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_27| Int) (|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_27| Int)) (<= (+ 2 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_27|) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_27|)) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_27|)) (exists ((|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_26| Int) (|v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_26| Int)) (<= (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_26|) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.offset_BEFORE_CALL_26|) 2) |v_ULTIMATE.start_aws_hash_table_put_harness_~#map~0#1.base_BEFORE_CALL_26|))) is different from true [2024-11-23 23:08:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 120 proven. 13 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-23 23:08:16,310 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:08:30,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179670587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:08:30,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:08:30,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 24] total 28 [2024-11-23 23:08:30,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359175573] [2024-11-23 23:08:30,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:08:30,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-23 23:08:30,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:08:30,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-23 23:08:30,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1305, Unknown=3, NotChecked=72, Total=1482 [2024-11-23 23:08:30,858 INFO L87 Difference]: Start difference. First operand 523 states and 692 transitions. Second operand has 28 states, 25 states have (on average 7.04) internal successors, (176), 23 states have internal predecessors, (176), 9 states have call successors, (56), 4 states have call predecessors, (56), 11 states have return successors, (55), 9 states have call predecessors, (55), 9 states have call successors, (55) [2024-11-23 23:08:34,923 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] [2024-11-23 23:08:39,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:08:43,670 WARN L539 Checker$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] [2024-11-23 23:08:47,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:08:52,112 WARN L539 Checker$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] [2024-11-23 23:08:56,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:09:00,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.36s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:05,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:09:09,557 WARN L539 Checker$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] [2024-11-23 23:09:13,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:18,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-23 23:09:22,658 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:27,053 WARN L539 Checker$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] [2024-11-23 23:09:31,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.34s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:35,848 WARN L539 Checker$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] [2024-11-23 23:09:40,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:44,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:09:48,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:10:17,046 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-23 23:10:18,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:10:18,797 INFO L93 Difference]: Finished difference Result 1043 states and 1377 transitions. [2024-11-23 23:10:18,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:10:18,798 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 7.04) internal successors, (176), 23 states have internal predecessors, (176), 9 states have call successors, (56), 4 states have call predecessors, (56), 11 states have return successors, (55), 9 states have call predecessors, (55), 9 states have call successors, (55) Word has length 199 [2024-11-23 23:10:18,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:10:18,805 INFO L225 Difference]: With dead ends: 1043 [2024-11-23 23:10:18,805 INFO L226 Difference]: Without dead ends: 526 [2024-11-23 23:10:18,808 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 30.9s TimeCoverageRelationStatistics Valid=116, Invalid=1525, Unknown=3, NotChecked=78, Total=1722 [2024-11-23 23:10:18,808 INFO L435 NwaCegarLoop]: 513 mSDtfsCounter, 4 mSDsluCounter, 9370 mSDsCounter, 0 mSdLazyCounter, 1465 mSolverCounterSat, 0 mSolverCounterUnsat, 18 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 101.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 9883 SdHoareTripleChecker+Invalid, 2030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1465 IncrementalHoareTripleChecker+Invalid, 18 IncrementalHoareTripleChecker+Unknown, 547 IncrementalHoareTripleChecker+Unchecked, 106.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:10:18,809 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 9883 Invalid, 2030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1465 Invalid, 18 Unknown, 547 Unchecked, 106.5s Time] [2024-11-23 23:10:18,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2024-11-23 23:10:18,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 523. [2024-11-23 23:10:18,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 380 states have (on average 1.268421052631579) internal successors, (482), 384 states have internal predecessors, (482), 96 states have call successors, (96), 39 states have call predecessors, (96), 46 states have return successors, (113), 99 states have call predecessors, (113), 95 states have call successors, (113) [2024-11-23 23:10:18,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 691 transitions. [2024-11-23 23:10:18,848 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 691 transitions. Word has length 199 [2024-11-23 23:10:18,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:10:18,848 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 691 transitions. [2024-11-23 23:10:18,849 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 7.04) internal successors, (176), 23 states have internal predecessors, (176), 9 states have call successors, (56), 4 states have call predecessors, (56), 11 states have return successors, (55), 9 states have call predecessors, (55), 9 states have call successors, (55) [2024-11-23 23:10:18,849 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 691 transitions. [2024-11-23 23:10:18,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-23 23:10:18,851 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:10:18,851 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:10:18,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-23 23:10:19,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-23 23:10:19,052 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-23 23:10:19,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:10:19,052 INFO L85 PathProgramCache]: Analyzing trace with hash 497572958, now seen corresponding path program 2 times [2024-11-23 23:10:19,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:10:19,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104254443] [2024-11-23 23:10:19,052 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:10:19,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:10:31,069 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:10:31,069 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:10:32,915 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2024-11-23 23:10:32,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:10:32,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104254443] [2024-11-23 23:10:32,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104254443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:10:32,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17119734] [2024-11-23 23:10:32,916 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:10:32,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:10:32,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:10:32,920 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:10:32,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01f3e67a-0bc1-46c3-a53e-944319bebb4f/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process