./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:39:19,176 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:39:19,246 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 03:39:19,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:39:19,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:39:19,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:39:19,294 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:39:19,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:39:19,295 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:39:19,295 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:39:19,295 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:39:19,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:39:19,296 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:39:19,296 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:39:19,296 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:39:19,298 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:39:19,299 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:39:19,299 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:39:19,299 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:39:19,299 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:39:19,300 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:39:19,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:19,300 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:19,300 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:19,300 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:19,300 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:39:19,300 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:39:19,301 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:39:19,301 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:39:19,301 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:19,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:39:19,302 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:39:19,303 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:39:19,303 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:39:19,303 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:39:19,303 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_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1d3eb02e894c2acef7732d0e57c112cc2c197f8f03d7c13822f169fbed4dc5e5 [2024-11-28 03:39:19,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:39:19,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:39:19,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:39:19,680 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:39:19,680 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:39:19,682 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2024-11-28 03:39:22,645 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/data/0cf92f8fc/c07d9640458f425f8c79a3216958cf6e/FLAG1d05f78e3 [2024-11-28 03:39:23,381 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:39:23,381 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i [2024-11-28 03:39:23,454 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/data/0cf92f8fc/c07d9640458f425f8c79a3216958cf6e/FLAG1d05f78e3 [2024-11-28 03:39:23,480 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/data/0cf92f8fc/c07d9640458f425f8c79a3216958cf6e [2024-11-28 03:39:23,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:39:23,485 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:39:23,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:23,489 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:39:23,495 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:39:23,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:23" (1/1) ... [2024-11-28 03:39:23,499 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68298c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:23, skipping insertion in model container [2024-11-28 03:39:23,501 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:39:23" (1/1) ... [2024-11-28 03:39:23,619 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:39:23,949 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_c825f349-d140-44c9-9abb-e49a399f7601/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2024-11-28 03:39:23,957 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_c825f349-d140-44c9-9abb-e49a399f7601/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2024-11-28 03:39:25,032 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,033 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,033 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,034 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,036 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,053 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,054 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,056 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,057 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,059 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,062 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,786 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,786 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,796 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,810 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,932 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,933 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,934 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,935 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,936 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,936 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,936 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,937 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,937 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,938 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,941 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,941 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,942 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,943 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,949 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,949 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,957 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,958 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,958 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:25,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:26,002 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:39:26,016 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_c825f349-d140-44c9-9abb-e49a399f7601/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4504,4517] [2024-11-28 03:39:26,016 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_c825f349-d140-44c9-9abb-e49a399f7601/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_down_harness.i[4564,4577] [2024-11-28 03:39:26,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,096 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,097 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,098 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,098 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,099 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,099 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,100 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,100 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,178 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,178 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,184 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,191 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7776-7787] [2024-11-28 03:39:26,223 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,223 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,223 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,224 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,224 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,224 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,224 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,225 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,225 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,225 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,225 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,227 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,227 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,228 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,229 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,229 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,229 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,231 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,233 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,242 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,243 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 03:39:26,254 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:39:26,477 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:39:26,478 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26 WrapperNode [2024-11-28 03:39:26,478 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:39:26,479 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:26,479 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:39:26,479 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:39:26,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,569 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,649 INFO L138 Inliner]: procedures = 686, calls = 1900, calls flagged for inlining = 59, calls inlined = 14, statements flattened = 847 [2024-11-28 03:39:26,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:39:26,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:39:26,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:39:26,650 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:39:26,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,756 INFO L175 MemorySlicer]: Split 342 memory accesses to 6 slices as follows [2, 238, 15, 3, 66, 18]. 70 percent of accesses are in the largest equivalence class. The 18 initializations are split as follows [2, 6, 4, 1, 0, 5]. The 259 writes are split as follows [0, 232, 3, 1, 17, 6]. [2024-11-28 03:39:26,756 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,822 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,829 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,860 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,868 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:39:26,896 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:39:26,896 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:39:26,896 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:39:26,897 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (1/1) ... [2024-11-28 03:39:26,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:39:26,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:26,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:39:26,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:39:26,968 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2024-11-28 03:39:26,969 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2024-11-28 03:39:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-28 03:39:26,969 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-28 03:39:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:39:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-28 03:39:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-28 03:39:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-28 03:39:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-28 03:39:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 03:39:26,971 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 03:39:26,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 03:39:26,972 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 03:39:26,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:39:26,974 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:39:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:39:26,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-28 03:39:26,975 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:39:26,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:39:26,975 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 03:39:26,976 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-28 03:39:26,976 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 03:39:26,976 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-28 03:39:26,976 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-28 03:39:26,976 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2024-11-28 03:39:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-28 03:39:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:39:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-28 03:39:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_down [2024-11-28 03:39:26,977 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_down [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 03:39:26,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 03:39:26,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-28 03:39:26,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:39:26,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:39:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:39:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 03:39:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 03:39:26,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 03:39:27,467 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:39:27,470 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:39:34,207 INFO L? ?]: Removed 205 outVars from TransFormulas that were not future-live. [2024-11-28 03:39:34,208 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:39:34,234 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:39:34,238 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-28 03:39:34,238 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:34 BoogieIcfgContainer [2024-11-28 03:39:34,238 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:39:34,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:39:34,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:39:34,249 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:39:34,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:39:23" (1/3) ... [2024-11-28 03:39:34,250 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610b66ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:34, skipping insertion in model container [2024-11-28 03:39:34,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:39:26" (2/3) ... [2024-11-28 03:39:34,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610b66ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:39:34, skipping insertion in model container [2024-11-28 03:39:34,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:39:34" (3/3) ... [2024-11-28 03:39:34,254 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_down_harness.i [2024-11-28 03:39:34,274 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:39:34,276 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_priority_queue_s_sift_down_harness.i that has 24 procedures, 327 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-28 03:39:34,373 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:39:34,390 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;@7ca496a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:39:34,392 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:39:34,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 199 states have internal predecessors, (244), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2024-11-28 03:39:34,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:39:34,420 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:34,421 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:34,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:34,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:34,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1476906679, now seen corresponding path program 1 times [2024-11-28 03:39:34,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:34,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062277479] [2024-11-28 03:39:34,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:34,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:43,486 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-28 03:39:43,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:39:43,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062277479] [2024-11-28 03:39:43,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062277479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:39:43,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891785940] [2024-11-28 03:39:43,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:43,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:39:43,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:39:43,494 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:39:43,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:39:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:39:52,827 INFO L256 TraceCheckSpWp]: Trace formula consists of 4489 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:39:52,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:39:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 03:39:52,891 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:39:52,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891785940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:39:52,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:39:52,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:39:52,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899989791] [2024-11-28 03:39:52,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:39:52,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:39:52,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:39:52,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:39:52,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:39:52,932 INFO L87 Difference]: Start difference. First operand has 327 states, 198 states have (on average 1.2323232323232323) internal successors, (244), 199 states have internal predecessors, (244), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:39:53,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:39:53,041 INFO L93 Difference]: Finished difference Result 631 states and 950 transitions. [2024-11-28 03:39:53,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:39:53,044 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 156 [2024-11-28 03:39:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:39:53,062 INFO L225 Difference]: With dead ends: 631 [2024-11-28 03:39:53,062 INFO L226 Difference]: Without dead ends: 322 [2024-11-28 03:39:53,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:39:53,082 INFO L435 NwaCegarLoop]: 445 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, 445 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:39:53,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:39:53,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-28 03:39:53,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2024-11-28 03:39:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 194 states have (on average 1.2010309278350515) internal successors, (233), 195 states have internal predecessors, (233), 104 states have call successors, (104), 23 states have call predecessors, (104), 23 states have return successors, (103), 103 states have call predecessors, (103), 103 states have call successors, (103) [2024-11-28 03:39:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 440 transitions. [2024-11-28 03:39:53,201 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 440 transitions. Word has length 156 [2024-11-28 03:39:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:39:53,203 INFO L471 AbstractCegarLoop]: Abstraction has 322 states and 440 transitions. [2024-11-28 03:39:53,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2024-11-28 03:39:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 440 transitions. [2024-11-28 03:39:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-28 03:39:53,211 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:39:53,212 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:39:53,233 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:39:53,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:39:53,416 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:39:53,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:39:53,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1310827779, now seen corresponding path program 1 times [2024-11-28 03:39:53,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:39:53,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53544703] [2024-11-28 03:39:53,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:39:53,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:39:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:01,525 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2024-11-28 03:40:01,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53544703] [2024-11-28 03:40:01,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53544703] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:01,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017364172] [2024-11-28 03:40:01,526 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:01,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:01,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:01,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:01,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:40:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:09,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 4489 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:40:09,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:10,153 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-28 03:40:10,153 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:10,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017364172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:10,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:10,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 03:40:10,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636564120] [2024-11-28 03:40:10,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:10,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:40:10,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:10,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:40:10,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:40:10,157 INFO L87 Difference]: Start difference. First operand 322 states and 440 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 03:40:11,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:11,989 INFO L93 Difference]: Finished difference Result 598 states and 822 transitions. [2024-11-28 03:40:11,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:40:11,990 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 156 [2024-11-28 03:40:11,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:11,997 INFO L225 Difference]: With dead ends: 598 [2024-11-28 03:40:11,998 INFO L226 Difference]: Without dead ends: 324 [2024-11-28 03:40:12,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:12,001 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 441 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:12,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1540 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:40:12,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-28 03:40:12,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2024-11-28 03:40:12,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 195 states have (on average 1.2) internal successors, (234), 197 states have internal predecessors, (234), 104 states have call successors, (104), 23 states have call predecessors, (104), 24 states have return successors, (107), 103 states have call predecessors, (107), 103 states have call successors, (107) [2024-11-28 03:40:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 445 transitions. [2024-11-28 03:40:12,056 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 445 transitions. Word has length 156 [2024-11-28 03:40:12,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:12,057 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 445 transitions. [2024-11-28 03:40:12,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-11-28 03:40:12,057 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 445 transitions. [2024-11-28 03:40:12,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2024-11-28 03:40:12,061 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:12,061 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 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] [2024-11-28 03:40:12,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:12,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:12,262 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:12,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:12,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2055053537, now seen corresponding path program 1 times [2024-11-28 03:40:12,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:12,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661608560] [2024-11-28 03:40:12,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:12,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:21,161 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-28 03:40:21,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661608560] [2024-11-28 03:40:21,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661608560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:21,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879770525] [2024-11-28 03:40:21,162 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:21,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:21,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:21,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:21,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:40:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:28,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 4539 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:40:28,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-28 03:40:30,146 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:30,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879770525] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:30,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:30,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-28 03:40:30,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344267493] [2024-11-28 03:40:30,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:30,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:40:30,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:30,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:40:30,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:40:30,150 INFO L87 Difference]: Start difference. First operand 324 states and 445 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-28 03:40:32,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:32,204 INFO L93 Difference]: Finished difference Result 621 states and 869 transitions. [2024-11-28 03:40:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:40:32,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2024-11-28 03:40:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:32,209 INFO L225 Difference]: With dead ends: 621 [2024-11-28 03:40:32,209 INFO L226 Difference]: Without dead ends: 345 [2024-11-28 03:40:32,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:40:32,212 INFO L435 NwaCegarLoop]: 409 mSDtfsCounter, 40 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2376 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:32,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 2376 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 03:40:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2024-11-28 03:40:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 343. [2024-11-28 03:40:32,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 213 states have internal predecessors, (256), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-28 03:40:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 482 transitions. [2024-11-28 03:40:32,258 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 482 transitions. Word has length 164 [2024-11-28 03:40:32,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:32,259 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 482 transitions. [2024-11-28 03:40:32,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 4 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2024-11-28 03:40:32,260 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 482 transitions. [2024-11-28 03:40:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-28 03:40:32,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:32,264 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:32,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:40:32,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:32,468 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:32,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:32,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1756699009, now seen corresponding path program 1 times [2024-11-28 03:40:32,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:32,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144525359] [2024-11-28 03:40:32,469 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:32,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2024-11-28 03:40:42,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144525359] [2024-11-28 03:40:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144525359] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:40:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009687423] [2024-11-28 03:40:42,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:42,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:42,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:42,068 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:40:42,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:40:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:51,814 INFO L256 TraceCheckSpWp]: Trace formula consists of 4666 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:40:51,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:40:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2024-11-28 03:40:53,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:40:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009687423] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:40:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2024-11-28 03:40:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669269760] [2024-11-28 03:40:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:53,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:40:53,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:53,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:40:53,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:40:53,066 INFO L87 Difference]: Start difference. First operand 343 states and 482 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-28 03:40:56,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:40:56,199 INFO L93 Difference]: Finished difference Result 644 states and 913 transitions. [2024-11-28 03:40:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:40:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) Word has length 179 [2024-11-28 03:40:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:40:56,206 INFO L225 Difference]: With dead ends: 644 [2024-11-28 03:40:56,206 INFO L226 Difference]: Without dead ends: 349 [2024-11-28 03:40:56,208 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:40:56,210 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 457 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:40:56,210 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [461 Valid, 1872 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:40:56,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-28 03:40:56,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 343. [2024-11-28 03:40:56,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 211 states have (on average 1.2132701421800949) internal successors, (256), 213 states have internal predecessors, (256), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-28 03:40:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 482 transitions. [2024-11-28 03:40:56,246 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 482 transitions. Word has length 179 [2024-11-28 03:40:56,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:40:56,247 INFO L471 AbstractCegarLoop]: Abstraction has 343 states and 482 transitions. [2024-11-28 03:40:56,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (27), 4 states have call predecessors, (27), 4 states have call successors, (27) [2024-11-28 03:40:56,248 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 482 transitions. [2024-11-28 03:40:56,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 03:40:56,252 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:40:56,252 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 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] [2024-11-28 03:40:56,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:40:56,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:40:56,453 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:40:56,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:56,453 INFO L85 PathProgramCache]: Analyzing trace with hash 550873262, now seen corresponding path program 1 times [2024-11-28 03:40:56,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889556619] [2024-11-28 03:40:56,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:56,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-28 03:41:05,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889556619] [2024-11-28 03:41:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889556619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:05,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602367989] [2024-11-28 03:41:05,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:05,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:05,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:05,423 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:05,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:41:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:14,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 4735 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:41:14,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:14,413 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-28 03:41:14,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:41:14,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602367989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:14,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:41:14,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2024-11-28 03:41:14,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230273501] [2024-11-28 03:41:14,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:14,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:14,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:14,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:14,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:41:14,416 INFO L87 Difference]: Start difference. First operand 343 states and 482 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 03:41:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:14,606 INFO L93 Difference]: Finished difference Result 644 states and 919 transitions. [2024-11-28 03:41:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:14,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 195 [2024-11-28 03:41:14,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:14,614 INFO L225 Difference]: With dead ends: 644 [2024-11-28 03:41:14,614 INFO L226 Difference]: Without dead ends: 349 [2024-11-28 03:41:14,617 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:41:14,621 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:14,621 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1303 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:41:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2024-11-28 03:41:14,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2024-11-28 03:41:14,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 215 states have (on average 1.2093023255813953) internal successors, (260), 217 states have internal predecessors, (260), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-28 03:41:14,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 486 transitions. [2024-11-28 03:41:14,652 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 486 transitions. Word has length 195 [2024-11-28 03:41:14,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:14,653 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 486 transitions. [2024-11-28 03:41:14,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-28 03:41:14,653 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 486 transitions. [2024-11-28 03:41:14,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-28 03:41:14,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:14,657 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 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] [2024-11-28 03:41:14,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:41:14,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:14,858 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:14,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash 577938864, now seen corresponding path program 1 times [2024-11-28 03:41:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:14,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019671312] [2024-11-28 03:41:14,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:14,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2024-11-28 03:41:24,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:24,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019671312] [2024-11-28 03:41:24,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019671312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:24,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817194378] [2024-11-28 03:41:24,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:24,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:24,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:24,818 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:24,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:41:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:34,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 4730 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:41:34,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:41:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2024-11-28 03:41:37,212 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:41:37,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817194378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:37,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:41:37,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-11-28 03:41:37,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052071342] [2024-11-28 03:41:37,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:37,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:41:37,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:37,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:41:37,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:41:37,216 INFO L87 Difference]: Start difference. First operand 347 states and 486 transitions. Second operand has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 03:41:40,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:41:40,190 INFO L93 Difference]: Finished difference Result 683 states and 964 transitions. [2024-11-28 03:41:40,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:41:40,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 195 [2024-11-28 03:41:40,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:41:40,198 INFO L225 Difference]: With dead ends: 683 [2024-11-28 03:41:40,198 INFO L226 Difference]: Without dead ends: 384 [2024-11-28 03:41:40,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:41:40,204 INFO L435 NwaCegarLoop]: 403 mSDtfsCounter, 62 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2720 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:41:40,207 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2720 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:41:40,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-28 03:41:40,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 347. [2024-11-28 03:41:40,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 215 states have (on average 1.2093023255813953) internal successors, (260), 217 states have internal predecessors, (260), 106 states have call successors, (106), 23 states have call predecessors, (106), 25 states have return successors, (120), 106 states have call predecessors, (120), 105 states have call successors, (120) [2024-11-28 03:41:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 486 transitions. [2024-11-28 03:41:40,258 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 486 transitions. Word has length 195 [2024-11-28 03:41:40,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:41:40,259 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 486 transitions. [2024-11-28 03:41:40,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.0) internal successors, (88), 8 states have internal predecessors, (88), 5 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2024-11-28 03:41:40,259 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 486 transitions. [2024-11-28 03:41:40,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2024-11-28 03:41:40,267 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:41:40,268 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 9, 7, 7, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:40,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:41:40,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:41:40,469 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:41:40,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:40,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1622292492, now seen corresponding path program 2 times [2024-11-28 03:41:40,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:40,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338073445] [2024-11-28 03:41:40,470 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:40,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:48,338 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:41:48,338 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:41:51,408 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2024-11-28 03:41:51,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338073445] [2024-11-28 03:41:51,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338073445] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:41:51,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145860404] [2024-11-28 03:41:51,409 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:41:51,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:41:51,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:41:51,413 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:41:51,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c825f349-d140-44c9-9abb-e49a399f7601/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process