./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/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 f794b74895d86811f31f266061230bbe472937829675777db1e7aa35770837b1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:56:40,404 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:56:40,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:56:40,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:56:40,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:56:40,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:56:40,611 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:56:40,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:56:40,613 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:56:40,613 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:56:40,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:56:40,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:56:40,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:56:40,617 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:56:40,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:56:40,618 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:40,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:40,619 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:40,619 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:56:40,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:56:40,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:56:40,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:56:40,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:56:40,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:56:40,622 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:56:40,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:56:40,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:56:40,623 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:56:40,623 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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/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 -> f794b74895d86811f31f266061230bbe472937829675777db1e7aa35770837b1 [2024-11-28 02:56:41,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:56:41,096 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:56:41,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:56:41,104 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:56:41,105 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:56:41,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2024-11-28 02:56:45,221 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/data/52abc1171/4626e2caf5ca46eca6d8471cbf27eb79/FLAG1ae0f49ad [2024-11-28 02:56:46,028 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:56:46,029 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i [2024-11-28 02:56:46,098 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/data/52abc1171/4626e2caf5ca46eca6d8471cbf27eb79/FLAG1ae0f49ad [2024-11-28 02:56:46,131 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/data/52abc1171/4626e2caf5ca46eca6d8471cbf27eb79 [2024-11-28 02:56:46,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:56:46,136 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:56:46,138 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:46,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:56:46,145 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:56:46,146 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:46" (1/1) ... [2024-11-28 02:56:46,148 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d02fb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:46, skipping insertion in model container [2024-11-28 02:56:46,148 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:56:46" (1/1) ... [2024-11-28 02:56:46,302 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:56:46,772 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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2024-11-28 02:56:46,784 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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2024-11-28 02:56:48,372 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,373 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,374 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,376 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,378 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,407 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,408 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,411 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:48,412 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:49,748 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:49,749 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:49,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:49,985 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:56:50,012 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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4500,4513] [2024-11-28 02:56:50,013 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_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/sv-benchmarks/c/aws-c-common/aws_string_new_from_string_harness_negated.i[4560,4573] [2024-11-28 02:56:50,109 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,110 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,110 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,111 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,112 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,124 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,128 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,129 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,364 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8237] [2024-11-28 02:56:50,366 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,367 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:56:50,390 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8723-8734] [2024-11-28 02:56:50,424 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:56:50,793 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:56:50,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50 WrapperNode [2024-11-28 02:56:50,795 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:56:50,797 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:50,797 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:56:50,797 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:56:50,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:50,974 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,103 INFO L138 Inliner]: procedures = 679, calls = 2733, calls flagged for inlining = 59, calls inlined = 9, statements flattened = 831 [2024-11-28 02:56:51,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:56:51,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:56:51,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:56:51,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:56:51,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,131 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,309 INFO L175 MemorySlicer]: Split 525 memory accesses to 6 slices as follows [257, 2, 2, 238, 21, 5]. 49 percent of accesses are in the largest equivalence class. The 13 initializations are split as follows [0, 2, 0, 6, 0, 5]. The 497 writes are split as follows [257, 0, 1, 232, 7, 0]. [2024-11-28 02:56:51,318 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,318 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,420 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,447 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,491 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,510 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:56:51,549 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:56:51,549 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:56:51,549 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:56:51,551 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (1/1) ... [2024-11-28 02:56:51,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:56:51,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:56:51,613 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:56:51,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:56:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_is_valid [2024-11-28 02:56:51,672 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_is_valid [2024-11-28 02:56:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:56:51,672 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:56:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#0 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#1 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#2 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#3 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#4 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real#5 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-28 02:56:51,673 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2024-11-28 02:56:51,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:56:51,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2024-11-28 02:56:51,675 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2024-11-28 02:56:51,675 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 02:56:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 02:56:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:56:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:56:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:56:51,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 02:56:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:56:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:56:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:56:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:56:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-28 02:56:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:56:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-28 02:56:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-28 02:56:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:56:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 02:56:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:56:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:56:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:56:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:56:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:56:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:56:51,689 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_array [2024-11-28 02:56:51,689 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_array [2024-11-28 02:56:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 02:56:51,690 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 02:56:51,690 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-28 02:56:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-28 02:56:51,693 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#0 [2024-11-28 02:56:51,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#1 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#2 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#3 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#4 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real#5 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure aws_string_new_from_string [2024-11-28 02:56:51,694 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_string_new_from_string [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:56:51,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:56:52,290 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:56:52,293 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:56:53,352 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:56:53,416 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2024-11-28 02:56:53,416 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2024-11-28 02:57:03,520 INFO L? ?]: Removed 178 outVars from TransFormulas that were not future-live. [2024-11-28 02:57:03,520 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:57:03,537 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:57:03,538 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:57:03,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:03 BoogieIcfgContainer [2024-11-28 02:57:03,539 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:57:03,542 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:57:03,542 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:57:03,549 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:57:03,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:56:46" (1/3) ... [2024-11-28 02:57:03,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c45f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:03, skipping insertion in model container [2024-11-28 02:57:03,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:56:50" (2/3) ... [2024-11-28 02:57:03,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@657c45f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:57:03, skipping insertion in model container [2024-11-28 02:57:03,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:57:03" (3/3) ... [2024-11-28 02:57:03,553 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_string_new_from_string_harness_negated.i [2024-11-28 02:57:03,575 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:57:03,577 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_string_new_from_string_harness_negated.i that has 22 procedures, 178 locations, 1 initial locations, 13 loop locations, and 1 error locations. [2024-11-28 02:57:03,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:57:03,675 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;@4e0aa87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:57:03,675 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:57:03,681 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 02:57:03,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:57:03,696 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:57:03,697 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:57:03,698 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:57:03,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:57:03,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1689756811, now seen corresponding path program 1 times [2024-11-28 02:57:03,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:57:03,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471882800] [2024-11-28 02:57:03,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:57:03,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:58:55,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:58:56,761 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:58:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:58:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471882800] [2024-11-28 02:58:56,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471882800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:58:56,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [455439890] [2024-11-28 02:58:56,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:58:56,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:58:56,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:58:56,768 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:58:56,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:00:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:00:45,281 INFO L256 TraceCheckSpWp]: Trace formula consists of 7730 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:00:45,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:00:45,317 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:00:45,317 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:00:45,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [455439890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:00:45,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:00:45,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 03:00:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894380728] [2024-11-28 03:00:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:00:45,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:00:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:00:45,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:00:45,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:00:45,353 INFO L87 Difference]: Start difference. First operand has 153 states, 97 states have (on average 1.175257731958763) internal successors, (114), 97 states have internal predecessors, (114), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:00:45,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:00:45,402 INFO L93 Difference]: Finished difference Result 300 states and 398 transitions. [2024-11-28 03:00:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:00:45,405 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 80 [2024-11-28 03:00:45,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:00:45,416 INFO L225 Difference]: With dead ends: 300 [2024-11-28 03:00:45,416 INFO L226 Difference]: Without dead ends: 147 [2024-11-28 03:00:45,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 81 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 03:00:45,424 INFO L435 NwaCegarLoop]: 188 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, 188 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 03:00:45,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:00:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-28 03:00:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-28 03:00:45,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 39 states have call successors, (39), 16 states have call predecessors, (39), 16 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 03:00:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 183 transitions. [2024-11-28 03:00:45,506 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 183 transitions. Word has length 80 [2024-11-28 03:00:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:00:45,507 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 183 transitions. [2024-11-28 03:00:45,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 03:00:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 183 transitions. [2024-11-28 03:00:45,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 03:00:45,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:00:45,511 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:45,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:00:45,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 03:00:45,712 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:00:45,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:00:45,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1131189901, now seen corresponding path program 1 times [2024-11-28 03:00:45,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:00:45,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857496111] [2024-11-28 03:00:45,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:00:45,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:02:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:02:29,407 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:02:29,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:02:29,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857496111] [2024-11-28 03:02:29,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857496111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:02:29,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:02:29,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:02:29,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947693047] [2024-11-28 03:02:29,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:02:29,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:02:29,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:02:29,410 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:02:29,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:29,411 INFO L87 Difference]: Start difference. First operand 147 states and 183 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:02:29,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:02:29,789 INFO L93 Difference]: Finished difference Result 219 states and 281 transitions. [2024-11-28 03:02:29,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:02:29,790 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 80 [2024-11-28 03:02:29,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:02:29,793 INFO L225 Difference]: With dead ends: 219 [2024-11-28 03:02:29,794 INFO L226 Difference]: Without dead ends: 177 [2024-11-28 03:02:29,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:02:29,795 INFO L435 NwaCegarLoop]: 196 mSDtfsCounter, 13 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:02:29,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 950 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:02:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2024-11-28 03:02:29,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 155. [2024-11-28 03:02:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 42 states have call successors, (42), 16 states have call predecessors, (42), 17 states have return successors, (42), 40 states have call predecessors, (42), 41 states have call successors, (42) [2024-11-28 03:02:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 194 transitions. [2024-11-28 03:02:29,816 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 194 transitions. Word has length 80 [2024-11-28 03:02:29,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:02:29,817 INFO L471 AbstractCegarLoop]: Abstraction has 155 states and 194 transitions. [2024-11-28 03:02:29,817 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-28 03:02:29,817 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 194 transitions. [2024-11-28 03:02:29,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:02:29,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:02:29,819 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:29,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:02:29,820 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:02:29,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:02:29,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1572834276, now seen corresponding path program 1 times [2024-11-28 03:02:29,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:02:29,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670743439] [2024-11-28 03:02:29,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:02:29,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:04:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:04:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:04:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:04:01,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670743439] [2024-11-28 03:04:01,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670743439] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:04:01,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:04:01,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:04:01,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304281710] [2024-11-28 03:04:01,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:04:01,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:04:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:04:01,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:04:01,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:04:01,937 INFO L87 Difference]: Start difference. First operand 155 states and 194 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:04:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:04:02,081 INFO L93 Difference]: Finished difference Result 210 states and 262 transitions. [2024-11-28 03:04:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:04:02,082 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 94 [2024-11-28 03:04:02,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:04:02,084 INFO L225 Difference]: With dead ends: 210 [2024-11-28 03:04:02,084 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 03:04:02,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:04:02,090 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:04:02,090 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 716 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:04:02,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 03:04:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2024-11-28 03:04:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1515151515151516) internal successors, (114), 102 states have internal predecessors, (114), 42 states have call successors, (42), 16 states have call predecessors, (42), 18 states have return successors, (43), 41 states have call predecessors, (43), 41 states have call successors, (43) [2024-11-28 03:04:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2024-11-28 03:04:02,110 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 94 [2024-11-28 03:04:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:04:02,111 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2024-11-28 03:04:02,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:04:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2024-11-28 03:04:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 03:04:02,113 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:04:02,113 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:02,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:04:02,114 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:04:02,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:04:02,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1089615061, now seen corresponding path program 1 times [2024-11-28 03:04:02,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:04:02,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457738282] [2024-11-28 03:04:02,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:04:02,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:05:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:05:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:05:34,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:05:34,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457738282] [2024-11-28 03:05:34,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457738282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:05:34,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:05:34,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 03:05:34,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676225295] [2024-11-28 03:05:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:05:34,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:05:34,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:05:34,634 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:05:34,634 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:05:34,635 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 03:05:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:05:36,545 INFO L93 Difference]: Finished difference Result 217 states and 276 transitions. [2024-11-28 03:05:36,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 03:05:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 95 [2024-11-28 03:05:36,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:05:36,549 INFO L225 Difference]: With dead ends: 217 [2024-11-28 03:05:36,549 INFO L226 Difference]: Without dead ends: 172 [2024-11-28 03:05:36,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:05:36,551 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 37 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:05:36,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 2112 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 03:05:36,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-28 03:05:36,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 169. [2024-11-28 03:05:36,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 105 states have (on average 1.1523809523809523) internal successors, (121), 109 states have internal predecessors, (121), 44 states have call successors, (44), 16 states have call predecessors, (44), 19 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-28 03:05:36,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 212 transitions. [2024-11-28 03:05:36,577 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 212 transitions. Word has length 95 [2024-11-28 03:05:36,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:05:36,577 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 212 transitions. [2024-11-28 03:05:36,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.6) internal successors, (54), 14 states have internal predecessors, (54), 6 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 03:05:36,578 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 212 transitions. [2024-11-28 03:05:36,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 03:05:36,580 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:05:36,580 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:36,581 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:05:36,581 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:05:36,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:05:36,581 INFO L85 PathProgramCache]: Analyzing trace with hash 217038076, now seen corresponding path program 1 times [2024-11-28 03:05:36,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:05:36,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678899968] [2024-11-28 03:05:36,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:05:36,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:07:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:07:05,803 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:07:05,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:07:05,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678899968] [2024-11-28 03:07:05,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678899968] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:07:05,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:07:05,804 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 03:07:05,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113194407] [2024-11-28 03:07:05,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:07:05,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:07:05,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:07:05,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:07:05,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:07:05,806 INFO L87 Difference]: Start difference. First operand 169 states and 212 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 03:07:09,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-28 03:07:12,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:07:12,982 INFO L93 Difference]: Finished difference Result 238 states and 305 transitions. [2024-11-28 03:07:12,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:07:12,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 91 [2024-11-28 03:07:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:07:12,985 INFO L225 Difference]: With dead ends: 238 [2024-11-28 03:07:12,985 INFO L226 Difference]: Without dead ends: 188 [2024-11-28 03:07:12,986 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:07:12,987 INFO L435 NwaCegarLoop]: 198 mSDtfsCounter, 187 mSDsluCounter, 1078 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:07:12,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 1276 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 205 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2024-11-28 03:07:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-28 03:07:13,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 161. [2024-11-28 03:07:13,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 101 states have (on average 1.1584158415841583) internal successors, (117), 103 states have internal predecessors, (117), 41 states have call successors, (41), 16 states have call predecessors, (41), 18 states have return successors, (43), 41 states have call predecessors, (43), 39 states have call successors, (43) [2024-11-28 03:07:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 201 transitions. [2024-11-28 03:07:13,023 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 201 transitions. Word has length 91 [2024-11-28 03:07:13,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:07:13,027 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 201 transitions. [2024-11-28 03:07:13,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 5 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2024-11-28 03:07:13,027 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 201 transitions. [2024-11-28 03:07:13,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 03:07:13,033 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:07:13,033 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:07:13,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:07:13,033 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:07:13,034 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:07:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1533515735, now seen corresponding path program 1 times [2024-11-28 03:07:13,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:07:13,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698522876] [2024-11-28 03:07:13,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:07:13,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:42,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:46,463 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 03:08:46,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:46,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698522876] [2024-11-28 03:08:46,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698522876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:46,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:46,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:08:46,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293994051] [2024-11-28 03:08:46,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:46,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:08:46,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:46,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:08:46,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:46,467 INFO L87 Difference]: Start difference. First operand 161 states and 201 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:08:46,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:46,735 INFO L93 Difference]: Finished difference Result 213 states and 264 transitions. [2024-11-28 03:08:46,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:08:46,736 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 95 [2024-11-28 03:08:46,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:46,739 INFO L225 Difference]: With dead ends: 213 [2024-11-28 03:08:46,739 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 03:08:46,740 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:46,741 INFO L435 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1071 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:46,741 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1071 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:08:46,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 03:08:46,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-28 03:08:46,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 106 states have (on average 1.150943396226415) internal successors, (122), 108 states have internal predecessors, (122), 41 states have call successors, (41), 16 states have call predecessors, (41), 20 states have return successors, (45), 43 states have call predecessors, (45), 39 states have call successors, (45) [2024-11-28 03:08:46,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 208 transitions. [2024-11-28 03:08:46,761 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 208 transitions. Word has length 95 [2024-11-28 03:08:46,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:46,761 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 208 transitions. [2024-11-28 03:08:46,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 03:08:46,762 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 208 transitions. [2024-11-28 03:08:46,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:08:46,764 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:46,764 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2024-11-28 03:08:46,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:08:46,765 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:08:46,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1570126280, now seen corresponding path program 1 times [2024-11-28 03:08:46,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:46,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016721479] [2024-11-28 03:08:46,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:46,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:10:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:10:50,357 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:10:50,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:10:50,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016721479] [2024-11-28 03:10:50,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016721479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:10:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936467343] [2024-11-28 03:10:50,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:10:50,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:10:50,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:10:50,360 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:10:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4246c05d-20fd-47f4-8ece-a2ae3d2c8758/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process