./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/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 62e39d0e38c481d46fef4d7defcfb7a98832e264f6a1ef575d03057507850723 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:09:20,583 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:09:20,704 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:09:20,713 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:09:20,716 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:09:20,761 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:09:20,762 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:09:20,762 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:09:20,763 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:09:20,763 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:09:20,763 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:09:20,763 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:09:20,764 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:09:20,764 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:09:20,766 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:09:20,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:09:20,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:09:20,766 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:09:20,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:09:20,767 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:09:20,767 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:09:20,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:09:20,768 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:09:20,768 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:09:20,768 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:09:20,768 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:20,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:20,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:20,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:09:20,770 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:09:20,771 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:09:20,771 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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/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 -> 62e39d0e38c481d46fef4d7defcfb7a98832e264f6a1ef575d03057507850723 [2024-11-28 02:09:21,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:09:21,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:09:21,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:09:21,190 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:09:21,190 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:09:21,192 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2024-11-28 02:09:24,375 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/data/91acdc4a3/0d98d3d3b87546da96b800e6b0c0d5bb/FLAG39d445618 [2024-11-28 02:09:25,213 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:09:25,214 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i [2024-11-28 02:09:25,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/data/91acdc4a3/0d98d3d3b87546da96b800e6b0c0d5bb/FLAG39d445618 [2024-11-28 02:09:25,286 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/data/91acdc4a3/0d98d3d3b87546da96b800e6b0c0d5bb [2024-11-28 02:09:25,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:09:25,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:09:25,292 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:25,293 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:09:25,298 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:09:25,299 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:25" (1/1) ... [2024-11-28 02:09:25,300 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2332abe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:25, skipping insertion in model container [2024-11-28 02:09:25,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:25" (1/1) ... [2024-11-28 02:09:25,418 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:09:25,778 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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2024-11-28 02:09:25,792 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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2024-11-28 02:09:27,231 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,232 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,233 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,234 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,235 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,253 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,253 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,256 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:27,257 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:28,611 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:28,612 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,008 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,008 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,034 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,035 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,042 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,043 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,058 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,059 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,060 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,061 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:29,175 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:09:29,191 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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4498,4511] [2024-11-28 02:09:29,191 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_a1d39146-bbd7-4648-acc9-7bf39546c1b4/sv-benchmarks/c/aws-c-common/aws_hash_byte_cursor_ptr_harness.i[4558,4571] [2024-11-28 02:09:29,236 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,238 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,239 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,240 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,240 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,249 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,249 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,250 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,253 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,469 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8288] [2024-11-28 02:09:29,471 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,474 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,496 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8774-8785] [2024-11-28 02:09:29,605 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,605 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,615 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,615 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,620 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,620 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,631 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,633 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,634 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,635 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:09:29,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:30,039 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:09:30,041 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30 WrapperNode [2024-11-28 02:09:30,041 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:30,042 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:30,042 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:09:30,043 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:09:30,055 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,180 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,292 INFO L138 Inliner]: procedures = 765, calls = 3572, calls flagged for inlining = 77, calls inlined = 6, statements flattened = 798 [2024-11-28 02:09:30,292 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:30,293 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:09:30,293 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:09:30,293 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:09:30,316 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,316 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,334 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,477 INFO L175 MemorySlicer]: Split 615 memory accesses to 9 slices as follows [2, 84, 257, 238, 7, 7, 12, 3, 5]. 42 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 0, 6, 1, 1, 2, 0, 5]. The 499 writes are split as follows [0, 0, 257, 232, 4, 4, 1, 1, 0]. [2024-11-28 02:09:30,481 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,481 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,551 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,566 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,579 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,585 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:09:30,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:09:30,603 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:09:30,603 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:09:30,604 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (1/1) ... [2024-11-28 02:09:30,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:30,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:30,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:09:30,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:09:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2024-11-28 02:09:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2024-11-28 02:09:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:09:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:09:30,684 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:09:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:09:30,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2024-11-28 02:09:30,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#8 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-11-28 02:09:30,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:09:30,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:09:30,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:09:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:09:30,688 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:09:30,688 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#8 [2024-11-28 02:09:30,689 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:09:30,690 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-28 02:09:30,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-28 02:09:30,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#7 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#8 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure hashlittle2 [2024-11-28 02:09:30,692 INFO L138 BoogieDeclarations]: Found implementation of procedure hashlittle2 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-11-28 02:09:30,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-11-28 02:09:30,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-11-28 02:09:31,201 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:09:31,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:09:32,815 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 02:09:41,755 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2024-11-28 02:09:41,756 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2024-11-28 02:09:41,860 INFO L? ?]: Removed 391 outVars from TransFormulas that were not future-live. [2024-11-28 02:09:41,860 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:09:41,889 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:09:41,889 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:09:41,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:41 BoogieIcfgContainer [2024-11-28 02:09:41,890 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:09:41,892 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:09:41,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:09:41,898 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:09:41,899 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:09:25" (1/3) ... [2024-11-28 02:09:41,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287ce677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:41, skipping insertion in model container [2024-11-28 02:09:41,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:30" (2/3) ... [2024-11-28 02:09:41,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@287ce677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:41, skipping insertion in model container [2024-11-28 02:09:41,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:41" (3/3) ... [2024-11-28 02:09:41,902 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_hash_byte_cursor_ptr_harness.i [2024-11-28 02:09:41,922 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:09:41,924 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_hash_byte_cursor_ptr_harness.i that has 7 procedures, 347 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:09:42,015 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:09:42,031 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;@41c12a6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:09:42,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:09:42,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 327 states have (on average 1.5657492354740061) internal successors, (512), 327 states have internal predecessors, (512), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 02:09:42,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:09:42,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:42,056 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:42,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:42,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:42,064 INFO L85 PathProgramCache]: Analyzing trace with hash -299286161, now seen corresponding path program 1 times [2024-11-28 02:09:42,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:42,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18927688] [2024-11-28 02:09:42,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:42,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:11:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:11:14,388 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:11:14,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:11:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18927688] [2024-11-28 02:11:14,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18927688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:11:14,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922930009] [2024-11-28 02:11:14,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:11:14,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:11:14,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:11:14,393 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:11:14,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:12:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:12:40,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 7670 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:12:40,175 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:12:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:12:40,197 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:12:40,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922930009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:12:40,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:12:40,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:12:40,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817780139] [2024-11-28 02:12:40,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:12:40,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:12:40,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:12:40,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:12:40,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:12:40,232 INFO L87 Difference]: Start difference. First operand has 347 states, 327 states have (on average 1.5657492354740061) internal successors, (512), 327 states have internal predecessors, (512), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:12:40,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:12:40,282 INFO L93 Difference]: Finished difference Result 689 states and 1078 transitions. [2024-11-28 02:12:40,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:12:40,284 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-28 02:12:40,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:12:40,293 INFO L225 Difference]: With dead ends: 689 [2024-11-28 02:12:40,293 INFO L226 Difference]: Without dead ends: 341 [2024-11-28 02:12:40,298 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 73 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 02:12:40,301 INFO L435 NwaCegarLoop]: 531 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, 531 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 02:12:40,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:12:40,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-28 02:12:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-28 02:12:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 321 states have (on average 1.560747663551402) internal successors, (501), 322 states have internal predecessors, (501), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:12:40,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 526 transitions. [2024-11-28 02:12:40,363 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 526 transitions. Word has length 72 [2024-11-28 02:12:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:12:40,364 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 526 transitions. [2024-11-28 02:12:40,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.5) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:12:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 526 transitions. [2024-11-28 02:12:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 02:12:40,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:12:40,368 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:40,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:12:40,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:12:40,569 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:12:40,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:12:40,571 INFO L85 PathProgramCache]: Analyzing trace with hash -343760603, now seen corresponding path program 1 times [2024-11-28 02:12:40,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:12:40,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163763545] [2024-11-28 02:12:40,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:12:40,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:14:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:14:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:14:04,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:14:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163763545] [2024-11-28 02:14:04,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163763545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:14:04,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712404768] [2024-11-28 02:14:04,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:14:04,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:14:04,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:14:05,004 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:14:05,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:15:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:15:29,821 INFO L256 TraceCheckSpWp]: Trace formula consists of 7670 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:15:29,827 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:15:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-28 02:15:30,481 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:15:30,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712404768] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:15:30,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:15:30,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:15:30,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515966450] [2024-11-28 02:15:30,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:15:30,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:15:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:15:30,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:15:30,483 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:15:30,484 INFO L87 Difference]: Start difference. First operand 341 states and 526 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:31,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:15:31,408 INFO L93 Difference]: Finished difference Result 665 states and 1034 transitions. [2024-11-28 02:15:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:15:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2024-11-28 02:15:31,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:15:31,413 INFO L225 Difference]: With dead ends: 665 [2024-11-28 02:15:31,413 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 02:15:31,415 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:15:31,416 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 528 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:15:31,417 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2001 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:15:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 02:15:31,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-28 02:15:31,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 323 states have (on average 1.5572755417956656) internal successors, (503), 325 states have internal predecessors, (503), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-28 02:15:31,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 530 transitions. [2024-11-28 02:15:31,447 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 530 transitions. Word has length 72 [2024-11-28 02:15:31,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:15:31,447 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 530 transitions. [2024-11-28 02:15:31,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 02:15:31,447 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 530 transitions. [2024-11-28 02:15:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:15:31,453 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:15:31,454 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:15:31,474 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:15:31,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:15:31,654 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:15:31,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:15:31,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1640697974, now seen corresponding path program 1 times [2024-11-28 02:15:31,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:15:31,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222875822] [2024-11-28 02:15:31,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:15:31,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:16:53,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:16:56,566 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-28 02:16:56,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:16:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222875822] [2024-11-28 02:16:56,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222875822] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:16:56,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251314297] [2024-11-28 02:16:56,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:16:56,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:16:56,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:56,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:16:56,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:18:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:25,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 7675 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:18:25,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:18:26,181 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:18:26,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:18:26,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251314297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:18:26,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:18:26,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:18:26,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998135398] [2024-11-28 02:18:26,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:18:26,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:18:26,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:18:26,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:18:26,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:18:26,184 INFO L87 Difference]: Start difference. First operand 344 states and 530 transitions. Second operand has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:18:27,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:18:27,038 INFO L93 Difference]: Finished difference Result 665 states and 1030 transitions. [2024-11-28 02:18:27,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:18:27,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-11-28 02:18:27,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:18:27,041 INFO L225 Difference]: With dead ends: 665 [2024-11-28 02:18:27,041 INFO L226 Difference]: Without dead ends: 344 [2024-11-28 02:18:27,042 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:18:27,043 INFO L435 NwaCegarLoop]: 507 mSDtfsCounter, 528 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:18:27,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2005 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:18:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-28 02:18:27,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-28 02:18:27,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 323 states have (on average 1.5572755417956656) internal successors, (503), 325 states have internal predecessors, (503), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-28 02:18:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 529 transitions. [2024-11-28 02:18:27,064 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 529 transitions. Word has length 74 [2024-11-28 02:18:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:18:27,064 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 529 transitions. [2024-11-28 02:18:27,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.0) internal successors, (54), 7 states have internal predecessors, (54), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:18:27,065 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 529 transitions. [2024-11-28 02:18:27,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 02:18:27,067 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:18:27,067 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:18:27,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:18:27,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1d39146-bbd7-4648-acc9-7bf39546c1b4/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-28 02:18:27,268 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:18:27,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:18:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash -9462289, now seen corresponding path program 2 times [2024-11-28 02:18:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:18:27,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878827871] [2024-11-28 02:18:27,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:18:27,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:19:57,502 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:19:57,505 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:20:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:20:00,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:20:00,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878827871] [2024-11-28 02:20:00,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878827871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:00,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:20:00,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 02:20:00,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962409178] [2024-11-28 02:20:00,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:00,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:20:00,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:00,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:20:00,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:20:00,521 INFO L87 Difference]: Start difference. First operand 344 states and 529 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:20:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:00,929 INFO L93 Difference]: Finished difference Result 375 states and 566 transitions. [2024-11-28 02:20:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:20:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2024-11-28 02:20:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:00,932 INFO L225 Difference]: With dead ends: 375 [2024-11-28 02:20:00,932 INFO L226 Difference]: Without dead ends: 341 [2024-11-28 02:20:00,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:20:00,934 INFO L435 NwaCegarLoop]: 521 mSDtfsCounter, 20 mSDsluCounter, 2551 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:00,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3072 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:20:00,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2024-11-28 02:20:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2024-11-28 02:20:00,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 321 states have (on average 1.557632398753894) internal successors, (500), 322 states have internal predecessors, (500), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-28 02:20:00,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 525 transitions. [2024-11-28 02:20:00,965 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 525 transitions. Word has length 76 [2024-11-28 02:20:00,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:00,965 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 525 transitions. [2024-11-28 02:20:00,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:20:00,966 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 525 transitions. [2024-11-28 02:20:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 02:20:00,969 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:00,969 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:00,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:20:00,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:20:00,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:00,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1070600276, now seen corresponding path program 1 times [2024-11-28 02:20:00,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:00,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896518143] [2024-11-28 02:20:00,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:00,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:21:33,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:33,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896518143] [2024-11-28 02:21:33,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896518143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:21:33,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:21:33,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:21:33,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342314253] [2024-11-28 02:21:33,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:21:33,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:21:33,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:21:33,805 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:21:33,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:21:33,806 INFO L87 Difference]: Start difference. First operand 341 states and 525 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 02:21:34,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:21:34,311 INFO L93 Difference]: Finished difference Result 353 states and 540 transitions. [2024-11-28 02:21:34,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:21:34,312 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 78 [2024-11-28 02:21:34,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:21:34,315 INFO L225 Difference]: With dead ends: 353 [2024-11-28 02:21:34,316 INFO L226 Difference]: Without dead ends: 351 [2024-11-28 02:21:34,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:21:34,317 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 3 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3630 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:21:34,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3630 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:21:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2024-11-28 02:21:34,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 350. [2024-11-28 02:21:34,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 327 states have (on average 1.547400611620795) internal successors, (506), 329 states have internal predecessors, (506), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 13 states have call predecessors, (17), 13 states have call successors, (17) [2024-11-28 02:21:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 537 transitions. [2024-11-28 02:21:34,335 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 537 transitions. Word has length 78 [2024-11-28 02:21:34,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:21:34,335 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 537 transitions. [2024-11-28 02:21:34,336 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 02:21:34,336 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 537 transitions. [2024-11-28 02:21:34,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 02:21:34,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:21:34,338 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:21:34,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:21:34,338 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:21:34,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:21:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash -840927460, now seen corresponding path program 1 times [2024-11-28 02:21:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:21:34,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014416246] [2024-11-28 02:21:34,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:34,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:22:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:23:03,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:23:03,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014416246] [2024-11-28 02:23:03,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014416246] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:03,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:23:03,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:23:03,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658683708] [2024-11-28 02:23:03,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:03,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:23:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:03,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:23:03,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:23:03,631 INFO L87 Difference]: Start difference. First operand 350 states and 537 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:23:08,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:08,206 INFO L93 Difference]: Finished difference Result 673 states and 1040 transitions. [2024-11-28 02:23:08,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:23:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 82 [2024-11-28 02:23:08,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:08,217 INFO L225 Difference]: With dead ends: 673 [2024-11-28 02:23:08,217 INFO L226 Difference]: Without dead ends: 641 [2024-11-28 02:23:08,218 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:23:08,220 INFO L435 NwaCegarLoop]: 477 mSDtfsCounter, 472 mSDsluCounter, 3707 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:08,221 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 4184 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-28 02:23:08,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2024-11-28 02:23:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 369. [2024-11-28 02:23:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 344 states have (on average 1.561046511627907) internal successors, (537), 347 states have internal predecessors, (537), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (19), 14 states have call predecessors, (19), 14 states have call successors, (19) [2024-11-28 02:23:08,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 571 transitions. [2024-11-28 02:23:08,249 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 571 transitions. Word has length 82 [2024-11-28 02:23:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:08,249 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 571 transitions. [2024-11-28 02:23:08,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 11 states have internal predecessors, (53), 4 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 02:23:08,249 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 571 transitions. [2024-11-28 02:23:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:23:08,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:08,251 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 02:23:08,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:23:08,252 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:08,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1811858584, now seen corresponding path program 1 times [2024-11-28 02:23:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694604394] [2024-11-28 02:23:08,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:08,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms